{"data":{"schemaVersion":"realm.mine-profile.v1","generatedAt":"2026-10-17T06:17:15.228Z","identity":{"mine_id":"3605828","name":"Yenzi Strip #3 Mine","status":"Abandoned","status_date":"2026-04-02","mine_type":"Surface","coal_metal":"C","commodity":"Coal (Bituminous)","state":"PA","county":"Jefferson","nearest_town":"Reynoldsville","operator_id":"P12345","operator_name":"Original Fuels Inc","controller_id":"C05963","controller_name":"David D  Osikowicz Jr","district":"M2","office":"Clearfield PA Field Office","employees":0,"latitude":41.058333,"longitude":-78.891667},"coverage":{"contributingSources":14,"registeredSources":20,"sourceRows":403},"relationships":{"schemaVersion":"realm.temporal-relationships.v1","temporalSemantics":{"validTime":{"granularity":"date","bounds":"inclusive","nullStart":"start date not published in the upstream history row","nullEnd":"open-ended in the upstream history row; not independent proof of present control"},"transactionTime":{"observedAt":"2026-10-17T05:35:58.500035+00:00","meaning":"time the checksum-addressed MDRS artifacts were observed by the PostgreSQL ingestion"},"derivation":{"controllerControlsOperator":"intersection of controller and operator valid-time intervals evidenced through this mine","currentIdentity":"current controller and operator are asserted only by the MDRS Mines snapshot"}},"current":{"mine":{"type":"mine","id":"3605828","name":"Yenzi Strip #3 Mine"},"operator":{"type":"operator","id":"P12345","name":"Original Fuels Inc"},"controller":{"type":"controller","id":"C05963","name":"David D  Osikowicz Jr"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-17T05:35:58.500035+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"P03621","name":"John R Yenzi Jr"},"object":{"type":"mine","id":"3605828","name":"Yenzi Strip #3 Mine"},"validFrom":"1975-04-01","validTo":"2010-02-28","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3605828|P03621|1975-04-01|2010-02-28"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C02988","name":"John R  Yenzi Jr"},"object":{"type":"mine","id":"3605828","name":"Yenzi Strip #3 Mine"},"validFrom":"1975-04-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3605828|C02988|1975-04-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C02988","name":"John R  Yenzi Jr"},"object":{"type":"operator","id":"P03621","name":"John R Yenzi Jr"},"validFrom":"1975-04-01","validTo":"2010-02-28","current":false,"derived":true,"evidenceMineId":"3605828","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3605828|P03621|1975-04-01|C02988|1975-04-01|61563"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C05963","name":"David D  Osikowicz Jr"},"object":{"type":"mine","id":"3605828","name":"Yenzi Strip #3 Mine"},"validFrom":"1984-04-04","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3605828|C05963|1984-04-04|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C13753","name":"Leonard  Yenzi"},"object":{"type":"mine","id":"3605828","name":"Yenzi Strip #3 Mine"},"validFrom":"1989-02-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3605828|C13753|1989-02-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P20152","name":"Leonard W. Yenzi Company"},"object":{"type":"mine","id":"3605828","name":"Yenzi Strip #3 Mine"},"validFrom":"2010-03-01","validTo":"2017-09-26","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3605828|P20152|2010-03-01|2017-09-26"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C13753","name":"Leonard  Yenzi"},"object":{"type":"operator","id":"P20152","name":"Leonard W. Yenzi Company"},"validFrom":"2010-03-01","validTo":"2017-09-26","current":false,"derived":true,"evidenceMineId":"3605828","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3605828|P20152|2010-03-01|C13753|1989-02-01|91063"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P12345","name":"Original Fuels Inc"},"object":{"type":"mine","id":"3605828","name":"Yenzi Strip #3 Mine"},"validFrom":"2017-09-27","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3605828|P12345|2017-09-27|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C05963","name":"David D  Osikowicz Jr"},"object":{"type":"operator","id":"P12345","name":"Original Fuels Inc"},"validFrom":"2017-09-27","validTo":null,"current":true,"derived":true,"evidenceMineId":"3605828","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3605828|P12345|2017-09-27|C05963|1984-04-04|70460"}}],"coverage":{"historyRecords":3,"edgeCount":9,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"sources":[{"id":"msha-addresses","name":"Addresses of Record","domains":["identity","logistics"],"products":["entity resolution","address history","facility geocoding"],"rowCount":1,"firstDate":"2026-04-02","lastDate":"2026-04-02","metrics":{},"periods":{},"recentRecords":[]},{"id":"msha-assessed-violations","name":"Assessed Violations","domains":["compliance","legal"],"products":["penalty lifecycle","paid and outstanding amounts","assessment aging"],"rowCount":27,"firstDate":"2000-05-08","lastDate":"2025-11-18","metrics":{"ss":10,"delinquent":27,"recentRows":1,"paidPenalty":2345,"proposedPenalty":3109,"currentAssessment":3109},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"2908817","VIOLATION_NO":"9602307","ISSUE_DT":"11/18/2025","CFR_STANDARD_CD":"71.206(a)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"151.00","CURRENT_ASSESSMENT_AMT":"151.00","ASSESS_CASE_STATUS_CD":"Received","sourceDate":"2025-11-18"},{"SOURCE_ROW_NUMBER":"1672555","VIOLATION_NO":"8013406","ISSUE_DT":"02/11/2020","CFR_STANDARD_CD":"45.4","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"123.00","CURRENT_ASSESSMENT_AMT":"123.00","ASSESS_CASE_STATUS_CD":"Received","sourceDate":"2020-02-11"},{"SOURCE_ROW_NUMBER":"1672554","VIOLATION_NO":"8013405","ISSUE_DT":"02/11/2020","CFR_STANDARD_CD":"77.100(a)(1)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"123.00","CURRENT_ASSESSMENT_AMT":"123.00","ASSESS_CASE_STATUS_CD":"Received","sourceDate":"2020-02-11"},{"SOURCE_ROW_NUMBER":"1672553","VIOLATION_NO":"8013404","ISSUE_DT":"02/11/2020","CFR_STANDARD_CD":"77.1713(a)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"123.00","CURRENT_ASSESSMENT_AMT":"123.00","ASSESS_CASE_STATUS_CD":"Received","sourceDate":"2020-02-11"},{"SOURCE_ROW_NUMBER":"1672552","VIOLATION_NO":"8013403","ISSUE_DT":"02/10/2020","CFR_STANDARD_CD":"77.1110","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"123.00","CURRENT_ASSESSMENT_AMT":"123.00","ASSESS_CASE_STATUS_CD":"Received","sourceDate":"2020-02-10"},{"SOURCE_ROW_NUMBER":"1649288","VIOLATION_NO":"9200799","ISSUE_DT":"08/26/2019","CFR_STANDARD_CD":"77.1707(c)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"121.00","CURRENT_ASSESSMENT_AMT":"121.00","ASSESS_CASE_STATUS_CD":"Received","sourceDate":"2019-08-26"},{"SOURCE_ROW_NUMBER":"689804","VIOLATION_NO":"8013148","ISSUE_DT":"10/02/2018","CFR_STANDARD_CD":"77.1303(h)","SIG_SUB_IND":"Y","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"502.00","CURRENT_ASSESSMENT_AMT":"502.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2018-10-02"},{"SOURCE_ROW_NUMBER":"1665648","VIOLATION_NO":"7029589","ISSUE_DT":"09/19/2017","CFR_STANDARD_CD":"71.206(d)(1)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"118.00","CURRENT_ASSESSMENT_AMT":"118.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2017-09-19"},{"SOURCE_ROW_NUMBER":"698075","VIOLATION_NO":"8011665","ISSUE_DT":"08/17/2011","CFR_STANDARD_CD":"50.30(a)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"100.00","CURRENT_ASSESSMENT_AMT":"100.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2011-08-17"},{"SOURCE_ROW_NUMBER":"698074","VIOLATION_NO":"8011664","ISSUE_DT":"08/16/2011","CFR_STANDARD_CD":"77.1104","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"100.00","CURRENT_ASSESSMENT_AMT":"100.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2011-08-16"},{"SOURCE_ROW_NUMBER":"695715","VIOLATION_NO":"8011039","ISSUE_DT":"08/03/2009","CFR_STANDARD_CD":"77.410(b)","SIG_SUB_IND":"Y","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"100.00","CURRENT_ASSESSMENT_AMT":"100.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2009-08-03"},{"SOURCE_ROW_NUMBER":"695645","VIOLATION_NO":"7049776","ISSUE_DT":"11/05/2008","CFR_STANDARD_CD":"50.30(a)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"100.00","CURRENT_ASSESSMENT_AMT":"100.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2008-11-05"}]},{"id":"msha-coal-dust-samples","name":"Coal Dust Samples","domains":["health","safety"],"products":["respirable dust trends","CPDM coverage","void patterns","occupation exposure"],"rowCount":76,"firstDate":"2000-05-01","lastDate":"2021-06-25","metrics":{"recentRows":2,"cpdmSamples":0,"voidSamples":8,"validSamples":68,"maxConcentration":2.468,"concentrationTotal":15.697},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"1092151","CASS_NUM":"51570146","SMP_TAKEN_DT":"6/25/2021","CONC":".086","SMP_TYPE_CD_DESC":"DESIGNATED WORK POSITION","SMP_USE_CD_DESC":"VOID SAMPLE","VOID_CD_DESC":"DWP NOT IN PRODUCING STATUS","OCC_CD_DESC":"BULLDOZER OPERATOR","DEVICE_TYPE_CD":"CMDPSU","sourceDate":"2021-06-25"},{"SOURCE_ROW_NUMBER":"331998","CASS_NUM":"51570094","SMP_TAKEN_DT":"3/9/2021","CONC":".029","SMP_TYPE_CD_DESC":"DESIGNATED WORK POSITION","SMP_USE_CD_DESC":"VOID SAMPLE","VOID_CD_DESC":"DWP NOT IN PRODUCING STATUS","OCC_CD_DESC":"BULLDOZER OPERATOR","DEVICE_TYPE_CD":"CMDPSU","sourceDate":"2021-03-09"},{"SOURCE_ROW_NUMBER":"751118","CASS_NUM":"51570152","SMP_TAKEN_DT":"12/14/2020","CONC":".024","SMP_TYPE_CD_DESC":"DESIGNATED WORK POSITION","SMP_USE_CD_DESC":"VOID SAMPLE","VOID_CD_DESC":"DWP NOT IN PRODUCING STATUS","OCC_CD_DESC":"BULLDOZER OPERATOR","DEVICE_TYPE_CD":"CMDPSU","sourceDate":"2020-12-14"},{"SOURCE_ROW_NUMBER":"468452","CASS_NUM":"51550238","SMP_TAKEN_DT":"9/23/2020","CONC":".12","SMP_TYPE_CD_DESC":"DESIGNATED WORK POSITION","SMP_USE_CD_DESC":"VOID SAMPLE","VOID_CD_DESC":"DWP NOT IN PRODUCING STATUS","OCC_CD_DESC":"BULLDOZER OPERATOR","DEVICE_TYPE_CD":"CMDPSU","sourceDate":"2020-09-23"},{"SOURCE_ROW_NUMBER":"1138488","CASS_NUM":"51550248","SMP_TAKEN_DT":"6/29/2020","CONC":".306","SMP_TYPE_CD_DESC":"DESIGNATED WORK POSITION","SMP_USE_CD_DESC":"VOID SAMPLE","VOID_CD_DESC":"DWP NOT IN PRODUCING STATUS","OCC_CD_DESC":"BULLDOZER OPERATOR","DEVICE_TYPE_CD":"CMDPSU","sourceDate":"2020-06-29"},{"SOURCE_ROW_NUMBER":"1378945","CASS_NUM":"51550242","SMP_TAKEN_DT":"3/26/2020","CONC":".055","SMP_TYPE_CD_DESC":"DESIGNATED WORK POSITION","SMP_USE_CD_DESC":"NOT YET USED IN DETERMINATION","VOID_CD_DESC":"SAMPLE NOT VOIDED","OCC_CD_DESC":"BULLDOZER OPERATOR","DEVICE_TYPE_CD":"CMDPSU","sourceDate":"2020-03-26"},{"SOURCE_ROW_NUMBER":"347627","CASS_NUM":"58391229","SMP_TAKEN_DT":"2/11/2020","CONC":".246","SMP_TYPE_CD_DESC":"DESIGNATED WORK POSITION","SMP_USE_CD_DESC":"NOT USED ON INSPECTOR SAMPLES; NOT FOUND ON OPERATOR SAMPLE","VOID_CD_DESC":"SAMPLE NOT VOIDED","OCC_CD_DESC":"BULLDOZER OPERATOR","DEVICE_TYPE_CD":"CMDPSU","sourceDate":"2020-02-11"},{"SOURCE_ROW_NUMBER":"35681","CASS_NUM":"51550234","SMP_TAKEN_DT":"12/18/2019","CONC":".386","SMP_TYPE_CD_DESC":"DESIGNATED WORK POSITION","SMP_USE_CD_DESC":"NOT YET USED IN DETERMINATION","VOID_CD_DESC":"SAMPLE NOT VOIDED","OCC_CD_DESC":"BULLDOZER OPERATOR","DEVICE_TYPE_CD":"CMDPSU","sourceDate":"2019-12-18"},{"SOURCE_ROW_NUMBER":"104373","CASS_NUM":"51517174","SMP_TAKEN_DT":"9/18/2019","CONC":".313","SMP_TYPE_CD_DESC":"DESIGNATED WORK POSITION","SMP_USE_CD_DESC":"NOT YET USED IN DETERMINATION","VOID_CD_DESC":"SAMPLE NOT VOIDED","OCC_CD_DESC":"BULLDOZER OPERATOR","DEVICE_TYPE_CD":"CMDPSU","sourceDate":"2019-09-18"},{"SOURCE_ROW_NUMBER":"116193","CASS_NUM":"58399266","SMP_TAKEN_DT":"8/28/2019","CONC":".248","SMP_TYPE_CD_DESC":"DESIGNATED WORK POSITION","SMP_USE_CD_DESC":"NOT USED ON INSPECTOR SAMPLES; NOT FOUND ON OPERATOR SAMPLE","VOID_CD_DESC":"SAMPLE NOT VOIDED","OCC_CD_DESC":"BULLDOZER OPERATOR","DEVICE_TYPE_CD":"CMDPSU","sourceDate":"2019-08-28"},{"SOURCE_ROW_NUMBER":"989811","CASS_NUM":"58399269","SMP_TAKEN_DT":"8/26/2019","CONC":".164","SMP_TYPE_CD_DESC":"NONDESIGNATED WORK POSITION","SMP_USE_CD_DESC":"NOT USED ON INSPECTOR SAMPLES; NOT FOUND ON OPERATOR SAMPLE","VOID_CD_DESC":"SAMPLE NOT VOIDED","OCC_CD_DESC":"HIGHLIFT OPERATOR/FRONT END LOADER","DEVICE_TYPE_CD":"CMDPSU","sourceDate":"2019-08-26"},{"SOURCE_ROW_NUMBER":"937641","CASS_NUM":"51517224","SMP_TAKEN_DT":"6/17/2019","CONC":".194","SMP_TYPE_CD_DESC":"DESIGNATED WORK POSITION","SMP_USE_CD_DESC":"NOT YET USED IN DETERMINATION","VOID_CD_DESC":"SAMPLE NOT VOIDED","OCC_CD_DESC":"BULLDOZER OPERATOR","DEVICE_TYPE_CD":"CMDPSU","sourceDate":"2019-06-17"}]},{"id":"msha-conferences","name":"Conferences","domains":["compliance","legal"],"products":["conference history","post-issuance changes","citation lifecycle"],"rowCount":1,"firstDate":"2000-07-07","lastDate":"2000-07-07","metrics":{"linkedIssuances":1},"periods":{},"recentRecords":[]},{"id":"msha-contractor-production-quarterly","name":"Contractor Employment and Production — Quarterly","domains":["contractors","production","safety"],"products":["contractor exposure denominator","productivity","presence windows"],"rowCount":89,"firstDate":null,"lastDate":null,"metrics":{"linkedContractors":1,"notMineAttributable":1},"periods":{},"recentRecords":[]},{"id":"msha-contractor-production-yearly","name":"Contractor Employment and Production — Yearly","domains":["contractors","production","safety"],"products":["long-run contractor trend","annual denominator reconciliation"],"rowCount":31,"firstDate":null,"lastDate":null,"metrics":{"linkedContractors":1,"notMineAttributable":1},"periods":{},"recentRecords":[]},{"id":"msha-controller-operator-history","name":"Controller and Operator History","domains":["identity","compliance"],"products":["historical ownership attribution","operator transitions","valid-time joins"],"rowCount":3,"firstDate":"1975-04-01","lastDate":"2017-09-27","metrics":{"recentRows":0,"currentOperatorTenures":1,"completedOperatorTenures":2},"periods":{},"recentRecords":[]},{"id":"msha-inspections","name":"Inspections","domains":["safety","compliance"],"products":["inspection mix","on-site hours","event context","citation rate denominator"],"rowCount":82,"firstDate":"2000-04-25","lastDate":"2026-03-23","metrics":{"inspectors":83,"recentRows":8,"onSiteHours":537.75,"inspectionHours":961.5,"inspectionSamples":50},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"958181","EVENT_NO":"F0256B7","INSPECTION_BEGIN_DT":"03/23/2026","INSPECTION_END_DT":"03/23/2026","ACTIVITY_CODE":"E16","ACTIVITY":"Spot Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"2.75","SUM_TOTAL_ON_SITE_HOURS":"2","sourceDate":"2026-03-23"},{"SOURCE_ROW_NUMBER":"900978","EVENT_NO":"F002E83","INSPECTION_BEGIN_DT":"11/18/2025","INSPECTION_END_DT":"11/20/2025","ACTIVITY_CODE":"E16","ACTIVITY":"Spot Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"4.5","SUM_TOTAL_ON_SITE_HOURS":"2","sourceDate":"2025-11-18"},{"SOURCE_ROW_NUMBER":"900897","EVENT_NO":"F002E75","INSPECTION_BEGIN_DT":"06/26/2025","INSPECTION_END_DT":"07/17/2025","ACTIVITY_CODE":"E16","ACTIVITY":"Spot Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"7.75","SUM_TOTAL_ON_SITE_HOURS":"1.75","sourceDate":"2025-06-26"},{"SOURCE_ROW_NUMBER":"505885","EVENT_NO":"6249581","INSPECTION_BEGIN_DT":"02/20/2024","INSPECTION_END_DT":"02/20/2024","ACTIVITY_CODE":"E16","ACTIVITY":"Spot Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"8","SUM_TOTAL_ON_SITE_HOURS":"3","sourceDate":"2024-02-20"},{"SOURCE_ROW_NUMBER":"366654","EVENT_NO":"6244971","INSPECTION_BEGIN_DT":"07/28/2022","INSPECTION_END_DT":"07/29/2022","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"8","SUM_TOTAL_ON_SITE_HOURS":"2.5","sourceDate":"2022-07-28"},{"SOURCE_ROW_NUMBER":"11383","EVENT_NO":"6249275","INSPECTION_BEGIN_DT":"03/25/2022","INSPECTION_END_DT":"03/29/2022","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"12.25","SUM_TOTAL_ON_SITE_HOURS":"4.25","sourceDate":"2022-03-25"},{"SOURCE_ROW_NUMBER":"1100697","EVENT_NO":"6249416","INSPECTION_BEGIN_DT":"08/30/2021","INSPECTION_END_DT":"09/09/2021","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"24.75","SUM_TOTAL_ON_SITE_HOURS":"11","sourceDate":"2021-08-30"},{"SOURCE_ROW_NUMBER":"4511","EVENT_NO":"6249183","INSPECTION_BEGIN_DT":"01/21/2021","INSPECTION_END_DT":"02/03/2021","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"13.5","SUM_TOTAL_ON_SITE_HOURS":"4.5","sourceDate":"2021-01-21"},{"SOURCE_ROW_NUMBER":"626416","EVENT_NO":"4040973","INSPECTION_BEGIN_DT":"05/04/2020","INSPECTION_END_DT":"05/22/2020","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"18","SUM_TOTAL_ON_SITE_HOURS":"8.5","sourceDate":"2020-05-04"},{"SOURCE_ROW_NUMBER":"140077","EVENT_NO":"6249206","INSPECTION_BEGIN_DT":"02/10/2020","INSPECTION_END_DT":"03/25/2020","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"47","SUM_TOTAL_ON_SITE_HOURS":"27.5","sourceDate":"2020-02-10"},{"SOURCE_ROW_NUMBER":"1049416","EVENT_NO":"6227918","INSPECTION_BEGIN_DT":"08/26/2019","INSPECTION_END_DT":"09/10/2019","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"50.5","SUM_TOTAL_ON_SITE_HOURS":"33.5","sourceDate":"2019-08-26"},{"SOURCE_ROW_NUMBER":"215301","EVENT_NO":"6243930","INSPECTION_BEGIN_DT":"03/18/2019","INSPECTION_END_DT":"03/25/2019","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"16","SUM_TOTAL_ON_SITE_HOURS":"8.5","sourceDate":"2019-03-18"}]},{"id":"msha-mine-production-quarterly","name":"Mine Employment and Production — Quarterly","domains":["production","safety","compliance"],"products":["production trend","employee hours","rate denominators","seasonality"],"rowCount":12,"firstDate":null,"lastDate":null,"metrics":{},"periods":{"2002-Q4":{"hours":880,"employees":2,"production":5836},"2002-Q3":{"hours":840,"employees":2,"production":2270},"2002-Q2":{"hours":832,"employees":2,"production":4180},"2002-Q1":{"hours":808,"employees":2,"production":4420},"2001-Q4":{"hours":480,"employees":2,"production":8356},"2001-Q3":{"hours":336,"employees":2,"production":5685},"2001-Q2":{"hours":192,"employees":2,"production":3783},"2001-Q1":{"hours":304,"employees":2,"production":5711},"2000-Q4":{"hours":240,"employees":2,"production":4315},"2000-Q3":{"hours":256,"employees":2,"production":4490},"2000-Q2":{"hours":320,"employees":2,"production":4887},"2000-Q1":{"hours":576,"employees":24,"production":5813}},"recentRecords":[]},{"id":"msha-mine-production-yearly","name":"Mine Employment and Production — Yearly","domains":["production","safety","compliance"],"products":["annual trend","backfill","quarterly reconciliation"],"rowCount":20,"firstDate":null,"lastDate":null,"metrics":{},"periods":{"2010":{"hours":3752,"employees":3,"production":14744},"2011":{"hours":6320,"employees":4,"production":33502},"2012":{"hours":5869,"employees":3,"production":29195},"2013":{"hours":2721,"employees":2,"production":11048},"2014":{"hours":166,"employees":2,"production":0},"2018":{"hours":4814,"employees":2,"production":33336},"2019":{"hours":3304,"employees":2,"production":22946},"2020":{"hours":2425,"employees":1,"production":7022},"2025":{"hours":935,"employees":1,"production":0},"2026":{"hours":0,"employees":0,"production":0}},"recentRecords":[]},{"id":"msha-mines","name":"Mines","domains":["identity","production","logistics"],"products":["mine identity","status","commodity","location","operator and controller"],"rowCount":1,"firstDate":null,"lastDate":null,"metrics":{},"periods":{},"recentRecords":[]},{"id":"msha-noise-samples","name":"Noise Samples","domains":["health","safety","equipment"],"products":["hearing exposure","machine and manufacturer patterns","occupation coverage"],"rowCount":29,"firstDate":"2001-09-27","lastDate":"2020-02-11","metrics":{"recentRows":0,"doseOver100":6,"actDoseTotal":1909,"pelDoseTotal":1549},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"145009","EVENT_NO":"6249206","SURVEY_DATE":"02/11/2020","OCCUPATION_CD_DESC":"BULLDOZER OPERATOR","MACHINE_CD":"03","MANUFACTURER_CD":"018","ACT_DOSE_85":"102","PEL_DOSE_90":"46","SURVEY_TYPE":"I","sourceDate":"2020-02-11"},{"SOURCE_ROW_NUMBER":"145003","EVENT_NO":"6227918","SURVEY_DATE":"09/10/2019","OCCUPATION_CD_DESC":"BULLDOZER OPERATOR","MACHINE_CD":"03","MANUFACTURER_CD":"018","ACT_DOSE_85":"58","PEL_DOSE_90":"51","SURVEY_TYPE":"I","sourceDate":"2019-09-10"},{"SOURCE_ROW_NUMBER":"145008","EVENT_NO":"6243873","SURVEY_DATE":"03/20/2018","OCCUPATION_CD_DESC":"BULLDOZER OPERATOR","MACHINE_CD":"03","MANUFACTURER_CD":"018","ACT_DOSE_85":"75","PEL_DOSE_90":"67","SURVEY_TYPE":"I","sourceDate":"2018-03-20"},{"SOURCE_ROW_NUMBER":"145007","EVENT_NO":"6243850","SURVEY_DATE":"09/25/2017","OCCUPATION_CD_DESC":"BULLDOZER OPERATOR","MACHINE_CD":"03","MANUFACTURER_CD":"018","ACT_DOSE_85":"14","PEL_DOSE_90":"3","SURVEY_TYPE":"I","sourceDate":"2017-09-25"},{"SOURCE_ROW_NUMBER":"145006","EVENT_NO":"6242513","SURVEY_DATE":"02/26/2013","OCCUPATION_CD_DESC":"BULLDOZER OPERATOR","MACHINE_CD":"03","MANUFACTURER_CD":"007","ACT_DOSE_85":"35","PEL_DOSE_90":"12","SURVEY_TYPE":"I","sourceDate":"2013-02-26"},{"SOURCE_ROW_NUMBER":"145005","EVENT_NO":"6242513","SURVEY_DATE":"02/26/2013","OCCUPATION_CD_DESC":"HIGHLIFT OPERATOR/FRONT END LOADER","MACHINE_CD":"18","MANUFACTURER_CD":"063","ACT_DOSE_85":"70","PEL_DOSE_90":"48","SURVEY_TYPE":"I","sourceDate":"2013-02-26"},{"SOURCE_ROW_NUMBER":"145004","EVENT_NO":"6242513","SURVEY_DATE":"02/26/2013","OCCUPATION_CD_DESC":"REFUSE TRUCK DRIVER/BACKFILL TRUCK DRIVE","MACHINE_CD":"39","MANUFACTURER_CD":"037","ACT_DOSE_85":"29","PEL_DOSE_90":"17","SURVEY_TYPE":"I","sourceDate":"2013-02-26"},{"SOURCE_ROW_NUMBER":"144991","EVENT_NO":"4047958","SURVEY_DATE":"03/12/2012","OCCUPATION_CD_DESC":"BULLDOZER OPERATOR","MACHINE_CD":"03","MANUFACTURER_CD":"007","ACT_DOSE_85":"29","PEL_DOSE_90":"13","SURVEY_TYPE":"I","sourceDate":"2012-03-12"},{"SOURCE_ROW_NUMBER":"144990","EVENT_NO":"4047958","SURVEY_DATE":"03/12/2012","OCCUPATION_CD_DESC":"MECHANIC","MACHINE_CD":"40","MANUFACTURER_CD":"120","ACT_DOSE_85":"8","PEL_DOSE_90":"2","SURVEY_TYPE":"I","sourceDate":"2012-03-12"},{"SOURCE_ROW_NUMBER":"144989","EVENT_NO":"4044788","SURVEY_DATE":"03/02/2011","OCCUPATION_CD_DESC":"MECHANIC","MACHINE_CD":"40","MANUFACTURER_CD":"119","ACT_DOSE_85":"22","PEL_DOSE_90":"8","SURVEY_TYPE":"I","sourceDate":"2011-03-02"},{"SOURCE_ROW_NUMBER":"144988","EVENT_NO":"4044788","SURVEY_DATE":"03/02/2011","OCCUPATION_CD_DESC":"BACKHOE OPERATOR","MACHINE_CD":"40","MANUFACTURER_CD":"063","ACT_DOSE_85":"29","PEL_DOSE_90":"12","SURVEY_TYPE":"I","sourceDate":"2011-03-02"},{"SOURCE_ROW_NUMBER":"144987","EVENT_NO":"4044788","SURVEY_DATE":"03/02/2011","OCCUPATION_CD_DESC":"BULLDOZER OPERATOR","MACHINE_CD":"03","MANUFACTURER_CD":"007","ACT_DOSE_85":"65","PEL_DOSE_90":"38","SURVEY_TYPE":"I","sourceDate":"2011-03-02"}]},{"id":"msha-quartz-samples","name":"Quartz Samples — Coal","domains":["health","safety"],"products":["quartz exposure trends","occupation context","applicable-rule linkage"],"rowCount":4,"firstDate":"2003-03-27","lastDate":"2020-02-11","metrics":{"recentRows":0,"voidSamples":0,"maxQuartzPct":6.1,"validSamples":4,"quartzPctTotal":11},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"121834","CASSETTE_NO":"58391229","SAMPLE_DT":"02/11/2020","QUARTZ_PCT":"06.1","QUARTZ_MICROGRAMS":"14","OCC_CODE_DESC":"BULLDOZER OPERATOR","SAMPLE_TYPE_DESC":"DESIGNATED WORK POSITION","VOID_CD_DESC":"SAMPLE NOT VOIDED","sourceDate":"2020-02-11"},{"SOURCE_ROW_NUMBER":"140522","CASSETTE_NO":"58399266","SAMPLE_DT":"08/28/2019","QUARTZ_PCT":"01.4","QUARTZ_MICROGRAMS":"3","OCC_CODE_DESC":"BULLDOZER OPERATOR","SAMPLE_TYPE_DESC":"DESIGNATED WORK POSITION","VOID_CD_DESC":"SAMPLE NOT VOIDED","sourceDate":"2019-08-28"},{"SOURCE_ROW_NUMBER":"152333","CASSETTE_NO":"58258390","SAMPLE_DT":"03/20/2018","QUARTZ_PCT":"02.2","QUARTZ_MICROGRAMS":"5","OCC_CODE_DESC":"BULLDOZER OPERATOR","SAMPLE_TYPE_DESC":"DESIGNATED WORK POSITION","VOID_CD_DESC":"SAMPLE NOT VOIDED","sourceDate":"2018-03-20"},{"SOURCE_ROW_NUMBER":"140739","CASSETTE_NO":"57438361","SAMPLE_DT":"03/27/2003","QUARTZ_PCT":"01.3","OCC_CODE_DESC":"BULLDOZER OPERATOR","SAMPLE_TYPE_DESC":"DESIGNATED WORK POSITION","VOID_CD_DESC":"SAMPLE NOT VOIDED","sourceDate":"2003-03-27"}]},{"id":"msha-violations","name":"Violations","domains":["compliance","safety","legal"],"products":["citation and order record","condition text","Title 30 linkage","abatement patterns"],"rowCount":27,"firstDate":"2000-05-08","lastDate":"2025-11-18","metrics":{"ss":10,"amountDue":3109,"contested":0,"amountPaid":2345,"recentRows":1,"section104d":0,"unterminated":0,"proposedPenalty":3109},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"1900517","VIOLATION_NO":"9602307","VIOLATION_ISSUE_DT":"11/18/2025","SIG_SUB":"N","PART_SECTION":"71.206(a)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"Permanent","NO_AFFECTED":"1","NEGLIGENCE":"HighNegligence","TERMINATION_DT":"11/18/2025","PROPOSED_PENALTY":"151","AMOUNT_DUE":"151","AMOUNT_PAID":"0","CONTESTED_IND":"N","sourceDate":"2025-11-18"},{"SOURCE_ROW_NUMBER":"1900498","VIOLATION_NO":"8013406","VIOLATION_ISSUE_DT":"02/11/2020","SIG_SUB":"N","PART_SECTION":"45.4","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"LowNegligence","TERMINATION_DT":"02/18/2020","PROPOSED_PENALTY":"123","AMOUNT_DUE":"123","AMOUNT_PAID":"0","CONTESTED_IND":"N","sourceDate":"2020-02-11"},{"SOURCE_ROW_NUMBER":"1900497","VIOLATION_NO":"8013405","VIOLATION_ISSUE_DT":"02/11/2020","SIG_SUB":"N","PART_SECTION":"77.100(a)(1)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"NoLostDays","NO_AFFECTED":"1","NEGLIGENCE":"LowNegligence","TERMINATION_DT":"03/24/2020","PROPOSED_PENALTY":"123","AMOUNT_DUE":"123","AMOUNT_PAID":"0","CONTESTED_IND":"N","sourceDate":"2020-02-11"},{"SOURCE_ROW_NUMBER":"1900496","VIOLATION_NO":"8013404","VIOLATION_ISSUE_DT":"02/11/2020","SIG_SUB":"N","PART_SECTION":"77.1713(a)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"NoLostDays","NO_AFFECTED":"1","NEGLIGENCE":"LowNegligence","TERMINATION_DT":"03/24/2020","PROPOSED_PENALTY":"123","AMOUNT_DUE":"123","AMOUNT_PAID":"0","CONTESTED_IND":"N","sourceDate":"2020-02-11"},{"SOURCE_ROW_NUMBER":"1900495","VIOLATION_NO":"8013403","VIOLATION_ISSUE_DT":"02/10/2020","SIG_SUB":"N","PART_SECTION":"77.1110","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"02/10/2020","PROPOSED_PENALTY":"123","AMOUNT_DUE":"123","AMOUNT_PAID":"0","CONTESTED_IND":"N","sourceDate":"2020-02-10"},{"SOURCE_ROW_NUMBER":"1900510","VIOLATION_NO":"9200799","VIOLATION_ISSUE_DT":"08/26/2019","SIG_SUB":"N","PART_SECTION":"77.1707(c)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"08/28/2019","PROPOSED_PENALTY":"121","AMOUNT_DUE":"121","AMOUNT_PAID":"0","CONTESTED_IND":"N","sourceDate":"2019-08-26"},{"SOURCE_ROW_NUMBER":"1900515","VIOLATION_NO":"8013148","VIOLATION_ISSUE_DT":"10/02/2018","SIG_SUB":"Y","PART_SECTION":"77.1303(h)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Reasonably","INJ_ILLNESS":"Fatal","NO_AFFECTED":"2","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"10/04/2018","PROPOSED_PENALTY":"502","AMOUNT_DUE":"502","AMOUNT_PAID":"502","CONTESTED_IND":"N","sourceDate":"2018-10-02"},{"SOURCE_ROW_NUMBER":"1900514","VIOLATION_NO":"7029589","VIOLATION_ISSUE_DT":"09/19/2017","SIG_SUB":"N","PART_SECTION":"71.206(d)(1)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"NoLostDays","NO_AFFECTED":"0","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"09/25/2017","PROPOSED_PENALTY":"118","AMOUNT_DUE":"118","AMOUNT_PAID":"118","CONTESTED_IND":"N","sourceDate":"2017-09-19"},{"SOURCE_ROW_NUMBER":"1900509","VIOLATION_NO":"8011665","VIOLATION_ISSUE_DT":"08/17/2011","SIG_SUB":"N","PART_SECTION":"50.30(a)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"NoLikelihood","INJ_ILLNESS":"NoLostDays","NO_AFFECTED":"0","NEGLIGENCE":"LowNegligence","TERMINATION_DT":"08/17/2011","PROPOSED_PENALTY":"100","AMOUNT_DUE":"100","AMOUNT_PAID":"100","CONTESTED_IND":"N","sourceDate":"2011-08-17"},{"SOURCE_ROW_NUMBER":"1900508","VIOLATION_NO":"8011664","VIOLATION_ISSUE_DT":"08/16/2011","SIG_SUB":"N","PART_SECTION":"77.1104","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"08/16/2011","PROPOSED_PENALTY":"100","AMOUNT_DUE":"100","AMOUNT_PAID":"100","CONTESTED_IND":"N","sourceDate":"2011-08-16"},{"SOURCE_ROW_NUMBER":"1900507","VIOLATION_NO":"8011039","VIOLATION_ISSUE_DT":"08/03/2009","SIG_SUB":"Y","PART_SECTION":"77.410(b)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Reasonably","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"08/03/2009","PROPOSED_PENALTY":"100","AMOUNT_DUE":"100","AMOUNT_PAID":"100","CONTESTED_IND":"N","sourceDate":"2009-08-03"},{"SOURCE_ROW_NUMBER":"1900516","VIOLATION_NO":"7049776","VIOLATION_ISSUE_DT":"11/05/2008","SIG_SUB":"N","PART_SECTION":"50.30(a)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"NoLikelihood","INJ_ILLNESS":"NoLostDays","NO_AFFECTED":"0","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"11/05/2008","PROPOSED_PENALTY":"100","AMOUNT_DUE":"100","AMOUNT_PAID":"100","CONTESTED_IND":"N","sourceDate":"2008-11-05"}]}],"safety":{"href":"/api/v1/mines/3605828/safety","description":"Full-period safety series, top CFR sections and paginated activity. Requires PostgreSQL."},"silica":{"href":"/api/v1/mines/3605828/silica","description":"Dedicated silica records, measurements, sample status and trends. Defaults to the snapshot year; use year=all for history."},"externalContext":{"eia":null,"title30":{"snapshot":{"chapterCount":6,"featuredSectionCount":100,"latestAmendedOn":"2026-08-14","latestIssueDate":"2026-08-14","partCount":206,"sectionCount":5954,"upToDateAsOf":"2026-08-19"},"regulations":[{"chapter":"I","heading":"Quarterly sampling; designated work positions.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-71/subpart-C/section-71.206","part":"71","subchapter":"O","subpart":"C","id":"71.206","citation":"30 CFR 71.206","chapterHeading":"CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","subchapterHeading":"SUBCHAPTER O—COAL MINE SAFETY AND HEALTH","partHeading":"PART 71—MANDATORY HEALTH STANDARDS—SURFACE COAL MINES AND SURFACE WORK AREAS OF UNDERGROUND COAL MINES","subpartHeading":"","text":null,"occurrenceCount":2},{"chapter":"I","heading":"Independent contractor register.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-G/part-45/section-45.4","part":"45","subchapter":"G","subpart":"","id":"45.4","citation":"30 CFR 45.4","chapterHeading":"CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","subchapterHeading":"SUBCHAPTER G—FILING AND OTHER ADMINISTRATIVE REQUIREMENTS","partHeading":"PART 45—INDEPENDENT CONTRACTORS","subpartHeading":"","text":null,"occurrenceCount":1},{"chapter":"I","heading":"Certified person.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-B/section-77.100","part":"77","subchapter":"O","subpart":"B","id":"77.100","citation":"30 CFR 77.100","chapterHeading":"CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","subchapterHeading":"SUBCHAPTER O—COAL MINE SAFETY AND HEALTH","partHeading":"PART 77—MANDATORY SAFETY STANDARDS, SURFACE COAL MINES AND SURFACE WORK AREAS OF UNDERGROUND COAL MINES","subpartHeading":"","text":null,"occurrenceCount":1},{"chapter":"I","chapterHeading":"CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","citation":"30 CFR 77.1713","heading":"Daily inspection of surface coal mine; certified person; reports of inspection.","id":"77.1713","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-R/section-77.1713","part":"77","partHeading":"PART 77—MANDATORY SAFETY STANDARDS, SURFACE COAL MINES AND SURFACE WORK AREAS OF UNDERGROUND COAL MINES","subchapter":"O","subchapterHeading":"SUBCHAPTER O—COAL MINE SAFETY AND HEALTH","subpart":"R","subpartHeading":"Subpart R—Miscellaneous","text":"(a) At least once during each working shift, or more often if necessary for safety, each active working area and each active surface installation shall be examined by a certified person designated by the operator to conduct such examinations for hazardous conditions and any hazardous conditions noted during such examinations shall be reported to the operator and shall be corrected by the operator.\n\n(b) If any hazardous condition noted during an examination conducted in accordance with paragraph (a) of this section creates an imminent danger, the person conducting such examination shall notify the operator and the operator shall withdraw all persons from the area affected, except those persons referred to in section 104(d) of the Act, until the danger is abated.\n\n(c) After each examination conducted in accordance with the provisions of paragraph (a) of this section, each certified person who conducted all or any part of the examination required shall enter with ink or indelible pencil in a book approved by the Secretary the date and a report of the condition of the mine or any area of the mine which he has inspected together with a report of the nature and location of any hazardous condition found to be present at the mine. The book in which such entries are made shall be kept in an area at the mine designated by the operator to minimize the danger of destruction by fire or other hazard.\n\n(d) All examination reports recorded in accordance with the provisions of paragraph (c) of this section shall include a report of the action taken to abate hazardous conditions and shall be signed or countersigned each day by at least one of the following persons:\n\n(1) The surface mine foreman;\n\n(2) The assistant superintendent of the mine;\n\n(3) The superintendent of the mine;\n\n(4) The person designated by the operator as responsible for health and safety at the mine; or,\n\n(5) An equivalent mine official.\n\n(Pub. L. No. 96-511, 94 Stat. 2812 (44 U.S.C. 3501 et seq.))\n\n[36 FR 9364, May 22, 1971, as amended at 60 FR 33723, June 29, 1995; 63 FR 58613, Oct. 30, 1998]","occurrenceCount":1},{"chapter":"I","chapterHeading":"CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","citation":"30 CFR 77.1110","heading":"Examination and maintenance of firefighting equipment.","id":"77.1110","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-L/section-77.1110","part":"77","partHeading":"PART 77—MANDATORY SAFETY STANDARDS, SURFACE COAL MINES AND SURFACE WORK AREAS OF UNDERGROUND COAL MINES","subchapter":"O","subchapterHeading":"SUBCHAPTER O—COAL MINE SAFETY AND HEALTH","subpart":"L","subpartHeading":"Subpart L—Fire Protection","text":"Firefighting equipment shall be continuously maintained in a usable and operative condition. Fire extinguishers shall be examined at least once every 6 months and the date of such examination shall be recorded on a permanent tag attached to the extinguisher.\n\n(Pub. L. No. 96-511, 94 Stat. 2812 (44 U.S.C. 3501 et seq.))\n\n[36 FR 9364, May 22, 1971, as amended at 60 FR 33723, June 29, 1995]","occurrenceCount":1},{"chapter":"I","heading":"First aid equipment; location; minimum requirements.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-R/section-77.1707","part":"77","subchapter":"O","subpart":"R","id":"77.1707","citation":"30 CFR 77.1707","chapterHeading":"CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","subchapterHeading":"SUBCHAPTER O—COAL MINE SAFETY AND HEALTH","partHeading":"PART 77—MANDATORY SAFETY STANDARDS, SURFACE COAL MINES AND SURFACE WORK AREAS OF UNDERGROUND COAL MINES","subpartHeading":"","text":null,"occurrenceCount":1},{"chapter":"I","chapterHeading":"CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","citation":"30 CFR 77.1303","heading":"Explosives, handling and use.","id":"77.1303","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-N/section-77.1303","part":"77","partHeading":"PART 77—MANDATORY SAFETY STANDARDS, SURFACE COAL MINES AND SURFACE WORK AREAS OF UNDERGROUND COAL MINES","subchapter":"O","subchapterHeading":"SUBCHAPTER O—COAL MINE SAFETY AND HEALTH","subpart":"N","subpartHeading":"Subpart N—Explosives and Blasting","text":"(a) Persons who use or handle explosives or detonators shall be experienced men who understand the hazards involved; trainees shall do such work only under the supervision of and in the immediate presence of experienced men.\n\n(b) Blasting operations shall be under the direct control of authorized persons.\n\n(c) Substantial nonconductive closed containers shall be used to carry explosives, other than blasting agents to the blasting site.\n\n(d) Damaged or deteriorated explosives or detonators shall be destroyed in a safe manner.\n\n(e) Where electric blasting is to be performed, electric circuits to equipment in the immediate area to be blasted shall be deenergized before explosives or detonators are brought into the area; the power shall not be turned on again until after the shots are fired.\n\n(f) Explosives shall be kept separated from detonators until charging is started.\n\n(g) Areas in which charged holes are awaiting firing shall be guarded, or barricaded and posted, or flagged against unauthorized entry.\n\n(h) Ample warning shall be given before blasts are fired. All persons shall be cleared and removed from the blasting area unless suitable blasting shelters are provided to protect men endangered by concussion or flyrock from blasting.\n\n(i) Lead wires and blasting lines shall not be strung across power conductors, pipelines, railroad tracks, or within 20 feet of bare powerlines. They shall be protected from sources of static or other electrical contact.\n\n(j) For the protection of underground workers, special precautions shall be taken when blasting in close proximity to underground operations, and no blasting shall be done that would be hazardous to persons working underground.\n\n(k) Holes shall not be drilled where there is danger of intersecting a charged or misfired hole.\n\n(l) Only wooden or other nonsparking implements shall be used to punch holes in an explosive cartridge.\n\n(m) Tamping poles shall be blunt and squared at one end and made of wood, nonsparking material, or of special plastic acceptable to the Mine Safety and Health Administration.\n\n(n) Delay connectors for firing detonating cord shall be treated and handled with the same safety precautions as blasting caps and electric detonators.\n\n(o) Capped primers shall be made up at the time of charging and as close to the blasting site as conditions allow.\n\n(p) A capped primer shall be prepared so that the detonator is contained securely and is completely embedded within the explosive cartridge.\n\n(q) No tamping shall be done directly on a capped primer.\n\n(r) Detonating cord shall not be used if it has been kinked, bent, or otherwise handled in such a manner that the train of detonation may be interrupted.\n\n(s) Fuse shall not be used if it has been kinked, bent sharply, or handled roughly in such a manner that the train of deflagration may be interrupted.\n\n(t) Blasting caps shall be crimped to fuses only with implements designed for that specific purpose.\n\n(u) When firing from 1 to 15 blast-holes with safety fuse ignited individually using hand-held lighters, the fuses shall be of such lengths to provide the minimum burning time specified in the following table for a particular size round:\n\nNumber of holes in a round Minimum burning time, minutes 1 2 2 to 5 22⁄3 6 to 10 31⁄3 11 to 15 5\n\nIn no case shall any 40-second-per-foot safety fuse less than 36 inches long or any 30-second-per-foot safety fuse less than 48 inches long be used.\n\n(v) The burning rate of the safety fuse in use at any time shall be measured, posted in conspicuous locations, and brought to the attention of all men concerned with blasting.\n\n(w) Electric detonators of different brands shall not be used in the same round.\n\n(x) Adequate priming shall be employed to guard against misfires, increased toxic fumes, and poor performance.\n\n(y) Except when being tested with a blasting galvanometer:\n\n(1) Electric detonators shall be kept shunted until they are being connected to the blasting line or wired into a blasting round.\n\n(2) Wired rounds shall be kept shunted until they are being connected to the blasting line.\n\n(3) Blasting lines shall be kept shunted until immediately before blasting.\n\n(z) Completely wired rounds shall be tested with a blasting galvanometer before connections are made to the blasting line.\n\n(aa) Permanent blasting lines shall be properly supported, insulated, and kept in good repair.\n\n(bb) At least a 5-foot airgap shall be provided between the blasting circuit and the power circuit.\n\n(cc) When instantaneous blasting is performed, the double-trunkline or loop system shall be used in detonating-cord blasting.\n\n(dd) When instantaneous blasting is performed, trunklines, in multiple-row blasts, shall make one or more complete loops, with crossties between loops at intervals of not over 200 feet.\n\n(ee) All detonating cord knots shall be tight and all connections shall be kept at right angles to the trunklines.\n\n(ff) Power sources shall be suitable for the number of electrical detonators to be fired and for the type of circuits used.\n\n(gg) Electric circuits from the blasting switches to the blast area shall not be grounded.\n\n(hh) Safety switches and blasting switches shall be labeled, encased in boxes, and arranged so that the covers of the boxes cannot be closed with the switches in the through-circuit or firing position.\n\n(ii) Blasting switches shall be locked in the open position, except when closed to fire the blast. Lead wires shall not be connected to the blasting switch until the shot is ready to be fired.\n\n(jj) The key or other control to an electrical firing device shall be entrusted only to the person designated to fire the round or rounds.\n\n(kk) If branch circuits are used when blasts are fired from power circuits, safety switches located at safe distances from the blast areas shall be provided in addition to the main blasting switch.\n\n(ll) Misfires shall be reported to the proper supervisor and shall be disposed of safely before any other work is performed in that blasting area.\n\n(mm) When safety fuse has been used, men shall not return to misfired holes for at least 30 minutes.\n\n(nn) When electric blasting caps have been used, men shall not return to misfired holes for at least 15 minutes.\n\n(oo) If explosives are suspected of burning in a hole, all persons in the endangered area shall move to a safe location and no one should return to the hole until the danger has passed, but in no case within 1 hour.\n\n(pp) Blasted areas shall be examined for undetonated explosives after each blast and undetonated explosives found shall be disposed of safely.\n\n(qq) Blasted areas shall not be reentered by any person after firing until such time as concentrations of smoke, dust, or fumes have been reduced to safe limits.\n\n(rr) In secondary blasting, if more than one shot is to be fired at one time, blasting shall be done electrically or with detonating cord.\n\n(ss) Unused explosives and detonators shall be moved to a safe location as soon as charging operations are completed.\n\n(tt) When electric detonators are used, charging shall be stopped immediately when the presence of static electricity or stray currents is detected; the condition shall be remedied before charging is resumed.\n\n(uu) When electric detonators are used, charging shall be suspended and men withdrawn to a safe location upon the approach of an electrical storm.","occurrenceCount":1},{"chapter":"I","heading":"Preparation and submission of MSHA Form 7000-2—Quarterly Employment and Coal Production Report.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-I/part-50/subpart-D/section-50.30","part":"50","subchapter":"I","subpart":"D","id":"50.30","citation":"30 CFR 50.30","chapterHeading":"CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","subchapterHeading":"SUBCHAPTER I—ACCIDENTS, INJURIES, ILLNESSES, EMPLOYMENT, AND PRODUCTION IN MINES","partHeading":"PART 50—NOTIFICATION, INVESTIGATION, REPORTS AND RECORDS OF ACCIDENTS, INJURIES, ILLNESSES, EMPLOYMENT, AND COAL PRODUCTION IN MINES","subpartHeading":"","text":null,"occurrenceCount":2},{"chapter":"I","chapterHeading":"CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","citation":"30 CFR 77.1104","heading":"Accumulations of combustible materials.","id":"77.1104","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-L/section-77.1104","part":"77","partHeading":"PART 77—MANDATORY SAFETY STANDARDS, SURFACE COAL MINES AND SURFACE WORK AREAS OF UNDERGROUND COAL MINES","subchapter":"O","subchapterHeading":"SUBCHAPTER O—COAL MINE SAFETY AND HEALTH","subpart":"L","subpartHeading":"Subpart L—Fire Protection","text":"Combustible materials, grease, lubricants, paints, or flammable liquids shall not be allowed to accumulate where they can create a fire hazard.","occurrenceCount":1},{"chapter":"I","chapterHeading":"CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","citation":"30 CFR 77.410","heading":"Mobile equipment; automatic warning devices.","id":"77.410","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-E/section-77.410","part":"77","partHeading":"PART 77—MANDATORY SAFETY STANDARDS, SURFACE COAL MINES AND SURFACE WORK AREAS OF UNDERGROUND COAL MINES","subchapter":"O","subchapterHeading":"SUBCHAPTER O—COAL MINE SAFETY AND HEALTH","subpart":"E","subpartHeading":"Subpart E—Safeguards for Mechanical Equipment","text":"(a) Mobile equipment such as front-end loaders, forklifts, tractors, graders, and trucks, except pickup trucks with an unobstructed rear view, shall be equipped with a warning device that—\n\n(1) Gives an audible alarm when the equipment is put in reverse; or\n\n(2) Uses infrared light, ultrasonic waves, radar, or other effective devices to detect objects or persons at the rear of the equipment, and sounds an audible alarm when a person or object is detected. This type of discriminating warning device shall—\n\n(i) Have a sensing area of a sufficient size that would allow endangered persons adequate time to get out of the danger zone.\n\n(ii) Give audible and visual alarms inside the operator's compartment and an audible alarm outside of the operator's compartment when a person or object is detected in the sensing area; and\n\n(iii) When the equipment is put in reverse, activate and give a one-time audible and visual alarm inside the operator's compartment and a one-time audible alarm outside the operator's compartment.\n\n(b) Alarms shall be audible above the surrounding noise levels.\n\n(c) Warning devices shall be maintained in functional condition.\n\n(d) An automatic reverse-activated strobe light may be substituted for an audible alarm when mobile equipment is operated at night.\n\n[54 FR 30517, July 20, 1989]","occurrenceCount":1}],"fullCorpus":"/data/title30-sections.json"}}},"meta":{"representation":"json","mineId":"3605828","dataSource":"postgres","snapshotId":"2026-10-17T05:35:58.500035+00:00","completedAt":"2026-10-17T06:17:15.228Z","sourceCount":20,"totalRows":15450873}}