{"data":{"schemaVersion":"realm.mine-profile.v1","generatedAt":"2026-10-17T06:17:15.228Z","identity":{"mine_id":"2102641","name":"Plant 4","status":"Intermittent","status_date":"2016-06-01","mine_type":"Surface","coal_metal":"M","commodity":"Construction Sand and Gravel","state":"MN","county":"Cook","nearest_town":"Fergus Falls","operator_id":"L15201","operator_name":"Mark Sand & Gravel Co.","controller_id":"M11588","controller_name":"Mark T  Thorson","district":"M4","office":"Hibbing MN Field Office","employees":2,"latitude":46.285833,"longitude":-96.113056},"coverage":{"contributingSources":12,"registeredSources":20,"sourceRows":255},"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":"2102641","name":"Plant 4"},"operator":{"type":"operator","id":"L15201","name":"Mark Sand & Gravel Co."},"controller":{"type":"controller","id":"M11588","name":"Mark T  Thorson"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-17T05:35:58.500035+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00600","name":"Donald C  Ashworth"},"object":{"type":"mine","id":"2102641","name":"Plant 4"},"validFrom":"1950-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"2102641|M00600|1950-01-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L00733","name":"Mark Sand & Gravel Company"},"object":{"type":"mine","id":"2102641","name":"Plant 4"},"validFrom":"1978-03-09","validTo":"2002-03-10","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"2102641|L00733|1978-03-09|2002-03-10"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00600","name":"Donald C  Ashworth"},"object":{"type":"operator","id":"L00733","name":"Mark Sand & Gravel Company"},"validFrom":"1978-03-09","validTo":"2002-03-10","current":false,"derived":true,"evidenceMineId":"2102641","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"2102641|L00733|1978-03-09|M00600|1950-01-01|113414"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M11588","name":"Mark T  Thorson"},"object":{"type":"mine","id":"2102641","name":"Plant 4"},"validFrom":"1997-06-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"2102641|M11588|1997-06-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L15201","name":"Mark Sand & Gravel Co."},"object":{"type":"mine","id":"2102641","name":"Plant 4"},"validFrom":"2002-03-11","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"2102641|L15201|2002-03-11|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M11588","name":"Mark T  Thorson"},"object":{"type":"operator","id":"L15201","name":"Mark Sand & Gravel Co."},"validFrom":"2002-03-11","validTo":null,"current":true,"derived":true,"evidenceMineId":"2102641","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"2102641|L15201|2002-03-11|M11588|1997-06-01|151824"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"sources":[{"id":"msha-accidents","name":"Accident, Injuries, and Illnesses","domains":["safety","contractors"],"products":["incident trends","severity rates","equipment patterns","peer denominators"],"rowCount":2,"firstDate":"2007-08-18","lastDate":"2009-10-02","metrics":{"daysLost":0,"injuries":2,"fatalities":0,"recentRows":0,"restrictedDays":0,"contractorRecords":0},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"199542","DOCUMENT_NO":"220092820008","ACCIDENT_DT":"10/02/2009","DEGREE_INJURY":"NO DYS AWY FRM WRK,NO RSTR ACT","CLASSIFICATION":"ELECTRICAL","ACCIDENT_TYPE":"Contact with electrical current","OCCUPATION":"Bulldozer operator, Universal operator, Heavy equipment operator, Operating engineer","NO_INJURIES":"1","DAYS_LOST":"0","NARRATIVE":"Light rain was falling, standing water, wet equipment, electrical wiring was color coded incorrectly and wired wrong in the junction box, the ground lead was wired into the buss bar and caused the equipment frame to become energized. Employee set up a metal ladder to inspect equipment and received electrical shock.","sourceDate":"2009-10-02"},{"SOURCE_ROW_NUMBER":"109083","DOCUMENT_NO":"220072340003","ACCIDENT_DT":"08/18/2007","DEGREE_INJURY":"OCCUPATNAL ILLNESS NOT DEG 1-6","CLASSIFICATION":"DISORDERS (REPEATED TRAUMA)","ACCIDENT_TYPE":"Over-exertion NEC","OCCUPATION":"Front-end loader, Scraper-loader operator, Pan operator, Payloader, Scraper rig operator","NO_INJURIES":"1","DAYS_LOST":"0","NARRATIVE":"EE reported pain in his left shoulder muscle and felt numbness in his left arm and hand.","sourceDate":"2007-08-18"}]},{"id":"msha-addresses","name":"Addresses of Record","domains":["identity","logistics"],"products":["entity resolution","address history","facility geocoding"],"rowCount":1,"firstDate":"2016-06-01","lastDate":"2016-06-01","metrics":{},"periods":{},"recentRecords":[]},{"id":"msha-assessed-violations","name":"Assessed Violations","domains":["compliance","legal"],"products":["penalty lifecycle","paid and outstanding amounts","assessment aging"],"rowCount":76,"firstDate":"2006-06-27","lastDate":"2026-07-08","metrics":{"ss":30,"delinquent":75,"recentRows":12,"paidPenalty":73306,"proposedPenalty":94705,"currentAssessment":73457},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"3033365","VIOLATION_NO":"9697974","ISSUE_DT":"07/08/2026","CFR_STANDARD_CD":"56.14107(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":"2026-07-08"},{"SOURCE_ROW_NUMBER":"2701047","VIOLATION_NO":"9625840","ISSUE_DT":"10/18/2023","CFR_STANDARD_CD":"56.14107(a)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"143.00","CURRENT_ASSESSMENT_AMT":"143.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2023-10-18"},{"SOURCE_ROW_NUMBER":"2700838","VIOLATION_NO":"9624362","ISSUE_DT":"08/10/2023","CFR_STANDARD_CD":"56.12018","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"143.00","CURRENT_ASSESSMENT_AMT":"143.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2023-08-10"},{"SOURCE_ROW_NUMBER":"2700837","VIOLATION_NO":"9624361","ISSUE_DT":"08/10/2023","CFR_STANDARD_CD":"56.14107(a)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"143.00","CURRENT_ASSESSMENT_AMT":"143.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2023-08-10"},{"SOURCE_ROW_NUMBER":"2700836","VIOLATION_NO":"9624360","ISSUE_DT":"08/10/2023","CFR_STANDARD_CD":"56.14132(b)(2)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"143.00","CURRENT_ASSESSMENT_AMT":"143.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2023-08-10"},{"SOURCE_ROW_NUMBER":"2700835","VIOLATION_NO":"9624359","ISSUE_DT":"08/10/2023","CFR_STANDARD_CD":"56.11012","SIG_SUB_IND":"Y","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"143.00","CURRENT_ASSESSMENT_AMT":"143.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2023-08-10"},{"SOURCE_ROW_NUMBER":"2700834","VIOLATION_NO":"9624358","ISSUE_DT":"08/10/2023","CFR_STANDARD_CD":"56.14112(a)(1)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"143.00","CURRENT_ASSESSMENT_AMT":"143.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2023-08-10"},{"SOURCE_ROW_NUMBER":"2700833","VIOLATION_NO":"9624357","ISSUE_DT":"08/10/2023","CFR_STANDARD_CD":"56.9300(b)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"143.00","CURRENT_ASSESSMENT_AMT":"143.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2023-08-10"},{"SOURCE_ROW_NUMBER":"2699210","VIOLATION_NO":"9625072","ISSUE_DT":"06/29/2022","CFR_STANDARD_CD":"56.12004","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"133.00","CURRENT_ASSESSMENT_AMT":"133.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2022-06-29"},{"SOURCE_ROW_NUMBER":"2699209","VIOLATION_NO":"9625071","ISSUE_DT":"06/29/2022","CFR_STANDARD_CD":"56.12004","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"133.00","CURRENT_ASSESSMENT_AMT":"133.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2022-06-29"},{"SOURCE_ROW_NUMBER":"2699208","VIOLATION_NO":"9625070","ISSUE_DT":"06/29/2022","CFR_STANDARD_CD":"56.14112(b)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"133.00","CURRENT_ASSESSMENT_AMT":"133.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2022-06-29"},{"SOURCE_ROW_NUMBER":"2699207","VIOLATION_NO":"9625069","ISSUE_DT":"06/29/2022","CFR_STANDARD_CD":"56.9300(b)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"133.00","CURRENT_ASSESSMENT_AMT":"133.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2022-06-29"}]},{"id":"msha-civil-penalty-dockets-decisions","name":"Civil Penalty Dockets and Decisions","domains":["compliance","legal"],"products":["docket lineage","decision outcomes","citation packet precedent"],"rowCount":4,"firstDate":"2011-06-30","lastDate":"2012-04-19","metrics":{"appeals":0,"decisions":4,"recentRows":0,"decisionPenalty":53795,"originalPenalty":75043},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"90440","VIOLATION_NO":"6587945","DOCKET_NO":"LAKE 2011-336M","DECISION_DT":"04/19/2012","DECISION_TYPE_CODE_DESC":"Settlement","ORIGINAL_PENALTY_AMT":"6624.00","DECISION_PENALTY_AMT":"5000.00","JUDGE_FIRST_NAME":"Priscilla","JUDGE_LAST_NAME":"Rae","sourceDate":"2012-04-19"},{"SOURCE_ROW_NUMBER":"90439","VIOLATION_NO":"6587944","DOCKET_NO":"LAKE 2011-336M","DECISION_DT":"04/19/2012","DECISION_TYPE_CODE_DESC":"Settlement","ORIGINAL_PENALTY_AMT":"6624.00","DECISION_PENALTY_AMT":"5000.00","JUDGE_FIRST_NAME":"Priscilla","JUDGE_LAST_NAME":"Rae","sourceDate":"2012-04-19"},{"SOURCE_ROW_NUMBER":"90441","VIOLATION_NO":"6587946","DOCKET_NO":"LAKE 2011-337M","DECISION_DT":"08/12/2011","DECISION_TYPE_CODE_DESC":"Settlement","ORIGINAL_PENALTY_AMT":"1795.00","DECISION_PENALTY_AMT":"1795.00","JUDGE_FIRST_NAME":"Robert","JUDGE_LAST_NAME":"Lesnick","sourceDate":"2011-08-12"},{"SOURCE_ROW_NUMBER":"309033","VIOLATION_NO":"6328469","DOCKET_NO":"LAKE 2010-274M","DECISION_DT":"06/30/2011","DECISION_TYPE_CODE_DESC":"Settlement","ORIGINAL_PENALTY_AMT":"60000.00","DECISION_PENALTY_AMT":"42000.00","JUDGE_FIRST_NAME":"Michael","JUDGE_LAST_NAME":"Zielinski","sourceDate":"2011-06-30"}]},{"id":"msha-contested-violations","name":"Contested Violations","domains":["compliance","legal"],"products":["contest status","time to resolution","contested-rate context"],"rowCount":6,"firstDate":"2009-10-05","lastDate":"2011-03-24","metrics":{"decisions":6,"ssChanged":1,"recentRows":0,"decisionPenalty":56895,"proposedPenalty":80043},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"413621","CITATION_NO":"6328469-00015074A","CITATION_ISSUE_DT":"03/24/2011","DOCKET_NO":"LAKE 2011-583M","DECISION_DT":"11/15/2012","CFR_STANDARD_CODE":"56.12028","ORIGINAL_SIG_SUB_IND":"Y","DECISION_SIG_SUB_IND":"Y","PROPOSED_PENALTY_AMT":"2400.00","DECISION_PENALTY_AMT":"500.00","sourceDate":"2011-03-24"},{"SOURCE_ROW_NUMBER":"17281","CITATION_NO":"6328469-00015073A","CITATION_ISSUE_DT":"03/24/2011","DOCKET_NO":"LAKE 2011-617M","DECISION_DT":"07/26/2012","CFR_STANDARD_CODE":"56.12028","ORIGINAL_SIG_SUB_IND":"Y","PROPOSED_PENALTY_AMT":"2600.00","DECISION_PENALTY_AMT":"2600.00","sourceDate":"2011-03-24"},{"SOURCE_ROW_NUMBER":"364231","CITATION_NO":"6587945","CITATION_ISSUE_DT":"11/16/2010","DOCKET_NO":"LAKE 2011-336M","DECISION_DT":"04/19/2012","CFR_STANDARD_CODE":"56.14112(b)","ORIGINAL_SIG_SUB_IND":"Y","DECISION_SIG_SUB_IND":"Y","PROPOSED_PENALTY_AMT":"6624.00","DECISION_PENALTY_AMT":"5000.00","sourceDate":"2010-11-16"},{"SOURCE_ROW_NUMBER":"81602","CITATION_NO":"6587946","CITATION_ISSUE_DT":"11/16/2010","DOCKET_NO":"LAKE 2011-337M","DECISION_DT":"08/12/2011","CFR_STANDARD_CODE":"56.12004","ORIGINAL_SIG_SUB_IND":"Y","DECISION_SIG_SUB_IND":"Y","PROPOSED_PENALTY_AMT":"1795.00","DECISION_PENALTY_AMT":"1795.00","sourceDate":"2010-11-16"},{"SOURCE_ROW_NUMBER":"81049","CITATION_NO":"6587944","CITATION_ISSUE_DT":"11/16/2010","DOCKET_NO":"LAKE 2011-336M","DECISION_DT":"04/19/2012","CFR_STANDARD_CODE":"56.14107(a)","ORIGINAL_SIG_SUB_IND":"Y","DECISION_SIG_SUB_IND":"Y","PROPOSED_PENALTY_AMT":"6624.00","DECISION_PENALTY_AMT":"5000.00","sourceDate":"2010-11-16"},{"SOURCE_ROW_NUMBER":"412355","CITATION_NO":"6328469","CITATION_ISSUE_DT":"10/05/2009","DOCKET_NO":"LAKE 2010-274M","DECISION_DT":"06/30/2011","CFR_STANDARD_CODE":"56.12028","ORIGINAL_SIG_SUB_IND":"Y","DECISION_SIG_SUB_IND":"Y","PROPOSED_PENALTY_AMT":"60000.00","DECISION_PENALTY_AMT":"42000.00","sourceDate":"2009-10-05"}]},{"id":"msha-controller-operator-history","name":"Controller and Operator History","domains":["identity","compliance"],"products":["historical ownership attribution","operator transitions","valid-time joins"],"rowCount":2,"firstDate":"1978-03-09","lastDate":"2002-03-11","metrics":{"recentRows":0,"currentOperatorTenures":1,"completedOperatorTenures":1},"periods":{},"recentRecords":[]},{"id":"msha-inspections","name":"Inspections","domains":["safety","compliance"],"products":["inspection mix","on-site hours","event context","citation rate denominator"],"rowCount":33,"firstDate":"2001-11-28","lastDate":"2026-07-08","metrics":{"inspectors":33,"recentRows":8,"onSiteHours":164.25,"inspectionHours":456.5,"inspectionSamples":0},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"914680","EVENT_NO":"F039071","INSPECTION_BEGIN_DT":"07/08/2026","INSPECTION_END_DT":"07/09/2026","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"12","SUM_TOTAL_ON_SITE_HOURS":"6.5","sourceDate":"2026-07-08"},{"SOURCE_ROW_NUMBER":"46070","EVENT_NO":"F016D40","INSPECTION_BEGIN_DT":"06/24/2025","INSPECTION_END_DT":"06/25/2025","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"13","SUM_TOTAL_ON_SITE_HOURS":"5","sourceDate":"2025-06-24"},{"SOURCE_ROW_NUMBER":"506377","EVENT_NO":"6907892","INSPECTION_BEGIN_DT":"05/22/2024","INSPECTION_END_DT":"05/22/2024","ACTIVITY_CODE":"E17","ACTIVITY":"Special Emphasis Programs","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"3","SUM_TOTAL_ON_SITE_HOURS":"1.5","sourceDate":"2024-05-22"},{"SOURCE_ROW_NUMBER":"1150947","EVENT_NO":"6907858","INSPECTION_BEGIN_DT":"10/18/2023","INSPECTION_END_DT":"10/18/2023","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"13.25","SUM_TOTAL_ON_SITE_HOURS":"6.25","sourceDate":"2023-10-18"},{"SOURCE_ROW_NUMBER":"1159483","EVENT_NO":"6907454","INSPECTION_BEGIN_DT":"08/22/2023","INSPECTION_END_DT":"08/22/2023","ACTIVITY_CODE":"E16","ACTIVITY":"Spot Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"9.75","SUM_TOTAL_ON_SITE_HOURS":"5.5","sourceDate":"2023-08-22"},{"SOURCE_ROW_NUMBER":"905946","EVENT_NO":"6907604","INSPECTION_BEGIN_DT":"08/09/2023","INSPECTION_END_DT":"08/10/2023","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"20","SUM_TOTAL_ON_SITE_HOURS":"8.25","sourceDate":"2023-08-09"},{"SOURCE_ROW_NUMBER":"831833","EVENT_NO":"6907012","INSPECTION_BEGIN_DT":"06/29/2022","INSPECTION_END_DT":"06/29/2022","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"6.5","SUM_TOTAL_ON_SITE_HOURS":"4","sourceDate":"2022-06-29"},{"SOURCE_ROW_NUMBER":"591805","EVENT_NO":"6836823","INSPECTION_BEGIN_DT":"08/16/2021","INSPECTION_END_DT":"08/16/2021","ACTIVITY_CODE":"E28","ACTIVITY":"Mine Idle Activity","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"11.75","SUM_TOTAL_ON_SITE_HOURS":"1.5","sourceDate":"2021-08-16"},{"SOURCE_ROW_NUMBER":"467671","EVENT_NO":"6783927","INSPECTION_BEGIN_DT":"10/22/2019","INSPECTION_END_DT":"10/31/2019","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"62.5","SUM_TOTAL_ON_SITE_HOURS":"20.5","sourceDate":"2019-10-22"},{"SOURCE_ROW_NUMBER":"1062598","EVENT_NO":"6747683","INSPECTION_BEGIN_DT":"07/26/2019","INSPECTION_END_DT":"07/29/2019","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"15.75","SUM_TOTAL_ON_SITE_HOURS":"10.25","sourceDate":"2019-07-26"},{"SOURCE_ROW_NUMBER":"303803","EVENT_NO":"6747622","INSPECTION_BEGIN_DT":"09/06/2018","INSPECTION_END_DT":"09/06/2018","ACTIVITY_CODE":"E28","ACTIVITY":"Mine Idle Activity","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"6","SUM_TOTAL_ON_SITE_HOURS":".25","sourceDate":"2018-09-06"},{"SOURCE_ROW_NUMBER":"246007","EVENT_NO":"6780550","INSPECTION_BEGIN_DT":"08/24/2017","INSPECTION_END_DT":"08/24/2017","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"2.5","SUM_TOTAL_ON_SITE_HOURS":".5","sourceDate":"2017-08-24"}]},{"id":"msha-mine-production-quarterly","name":"Mine Employment and Production — Quarterly","domains":["production","safety","compliance"],"products":["production trend","employee hours","rate denominators","seasonality"],"rowCount":13,"firstDate":null,"lastDate":null,"metrics":{},"periods":{"2002-Q4":{"hours":773,"employees":3,"production":0},"2002-Q3":{"hours":1080,"employees":2,"production":0},"2002-Q2":{"hours":517,"employees":2,"production":0},"2002-Q1":{"hours":1,"employees":1,"production":0},"2001-Q4":{"hours":668,"employees":2,"production":0},"2001-Q3":{"hours":1395,"employees":4,"production":0},"2001-Q2":{"hours":761,"employees":4,"production":0},"2001-Q1":{"hours":1,"employees":1,"production":0},"2000-Q4":{"hours":1,"employees":1,"production":0},"2000-Q3":{"hours":1114,"employees":5,"production":0},"2000-Q2":{"hours":1304,"employees":6,"production":0},"2000-Q1":{"hours":1,"employees":1,"production":0}},"recentRecords":[]},{"id":"msha-mine-production-yearly","name":"Mine Employment and Production — Yearly","domains":["production","safety","compliance"],"products":["annual trend","backfill","quarterly reconciliation"],"rowCount":30,"firstDate":null,"lastDate":null,"metrics":{},"periods":{"2015":{"hours":223,"employees":2,"production":0},"2016":{"hours":256,"employees":2,"production":0},"2018":{"hours":99,"employees":2,"production":0},"2019":{"hours":1470,"employees":2,"production":0},"2020":{"hours":124,"employees":2,"production":0},"2022":{"hours":2835,"employees":2,"production":0},"2023":{"hours":2850,"employees":2,"production":0},"2024":{"hours":2944,"employees":2,"production":0},"2025":{"hours":1922,"employees":2,"production":0},"2026":{"hours":1587,"employees":3,"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-personal-health-samples","name":"Metal and Nonmetal Personal Health Samples","domains":["health","safety"],"products":["personal exposure trend","occupation patterns","analyte coverage"],"rowCount":10,"firstDate":"2008-10-22","lastDate":"2026-07-09","metrics":{"recentRows":4,"actionTaken":10,"maxExposureRatio":1.28,"overExposureLimit":3,"exposureRatioTotal":6.38},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"314556","EVENT_NO":"F039071","SAMPLE_NO":"000000202602806000","SAMPLE_DATE":"07/09/2026","CONTAMINANT_DESC":"Quartz, respirable, >1% Qtz","CONCENTRATION":"0001.34","EXPOSURE_LIMIT":"0001.12","C_OVER_E":"01.20","JOB_CD_DESC":"Crusher Oper/Worker","ACTION_TAKEN_DESC":"EXCEEDS THE PEL BUT NOT THE PEL X ERROR FACTOR","sourceDate":"2026-07-09"},{"SOURCE_ROW_NUMBER":"312881","EVENT_NO":"F039071","SAMPLE_NO":"000000202602805900","SAMPLE_DATE":"07/09/2026","CONTAMINANT_DESC":"Quartz, respirable, >1% Qtz","CONCENTRATION":"0000.86","EXPOSURE_LIMIT":"0001.06","C_OVER_E":"00.81","JOB_CD_DESC":"Crusher Oper/Worker","ACTION_TAKEN_DESC":"NO ACTION","sourceDate":"2026-07-09"},{"SOURCE_ROW_NUMBER":"274677","EVENT_NO":"6907454","SAMPLE_NO":"000000202303694600","SAMPLE_DATE":"08/22/2023","CONTAMINANT_DESC":"Unlisted Particulate, respirable, <1% Qtz","CONCENTRATION":"0000.13","EXPOSURE_LIMIT":"0000.00","C_OVER_E":"00.00","JOB_CD_DESC":"Front-end Loader Operator","ACTION_TAKEN_DESC":"NO ACTION","sourceDate":"2023-08-22"},{"SOURCE_ROW_NUMBER":"274676","EVENT_NO":"6907454","SAMPLE_NO":"000000202303694500","SAMPLE_DATE":"08/22/2023","CONTAMINANT_DESC":"Quartz, respirable, >1% Qtz","CONCENTRATION":"0000.88","EXPOSURE_LIMIT":"0001.05","C_OVER_E":"00.84","JOB_CD_DESC":"Screen/Scalper Operator","ACTION_TAKEN_DESC":"NO ACTION","sourceDate":"2023-08-22"},{"SOURCE_ROW_NUMBER":"231330","EVENT_NO":"6747683","SAMPLE_NO":"000000201904332400","SAMPLE_DATE":"07/29/2019","CONTAMINANT_DESC":"Quartz, respirable, >1% Qtz","CONCENTRATION":"0000.90","EXPOSURE_LIMIT":"0000.80","C_OVER_E":"01.13","JOB_CD_DESC":"Crusher Oper/Worker","ACTION_TAKEN_DESC":"EXCEEDS THE PEL BUT NOT THE PEL X ERROR FACTOR","sourceDate":"2019-07-29"},{"SOURCE_ROW_NUMBER":"231329","EVENT_NO":"6747683","SAMPLE_NO":"000000201904332300","SAMPLE_DATE":"07/29/2019","CONTAMINANT_DESC":"Quartz, respirable, >1% Qtz","CONCENTRATION":"0000.21","EXPOSURE_LIMIT":"0000.00","C_OVER_E":"00.00","JOB_CD_DESC":"Front-end Loader Operator","ACTION_TAKEN_DESC":"NO ACTION","sourceDate":"2019-07-29"},{"SOURCE_ROW_NUMBER":"145191","EVENT_NO":"6557801","SAMPLE_NO":"000000201009192700","SAMPLE_DATE":"09/28/2010","CONTAMINANT_DESC":"Quartz, respirable, >1% Qtz","CONCENTRATION":"0000.61","EXPOSURE_LIMIT":"0001.08","C_OVER_E":"00.56","JOB_CD_DESC":"Front-end Loader Operator","ACTION_TAKEN_DESC":"NO ACTION","sourceDate":"2010-09-28"},{"SOURCE_ROW_NUMBER":"145190","EVENT_NO":"6557801","SAMPLE_NO":"000000201009192600","SAMPLE_DATE":"09/28/2010","CONTAMINANT_DESC":"Quartz, respirable, >1% Qtz","CONCENTRATION":"0001.29","EXPOSURE_LIMIT":"0001.01","C_OVER_E":"01.28","JOB_CD_DESC":"Laborer, Bullgang","ACTION_TAKEN_DESC":"CITATION/ORDER ISSUED","sourceDate":"2010-09-28"},{"SOURCE_ROW_NUMBER":"90822","EVENT_NO":"1006862","SAMPLE_NO":"000000200808738600","SAMPLE_DATE":"10/22/2008","CONTAMINANT_DESC":"Quartz, respirable, >1% Qtz","CONCENTRATION":"0000.27","EXPOSURE_LIMIT":"0000.88","C_OVER_E":"00.31","JOB_CD_DESC":"Crusher Oper/Worker","ACTION_TAKEN_DESC":"NO ACTION","sourceDate":"2008-10-22"},{"SOURCE_ROW_NUMBER":"90821","EVENT_NO":"1006862","SAMPLE_NO":"000000200808738500","SAMPLE_DATE":"10/22/2008","CONTAMINANT_DESC":"Quartz, respirable, >1% Qtz","CONCENTRATION":"0000.12","EXPOSURE_LIMIT":"0000.48","C_OVER_E":"00.25","JOB_CD_DESC":"Front-end Loader Operator","ACTION_TAKEN_DESC":"NO ACTION","sourceDate":"2008-10-22"}]},{"id":"msha-violations","name":"Violations","domains":["compliance","safety","legal"],"products":["citation and order record","condition text","Title 30 linkage","abatement patterns"],"rowCount":77,"firstDate":"2006-06-27","lastDate":"2026-07-08","metrics":{"ss":30,"amountDue":73457,"contested":1,"amountPaid":73306,"recentRows":12,"section104d":7,"unterminated":0,"proposedPenalty":94705},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"1358482","VIOLATION_NO":"9697974","VIOLATION_ISSUE_DT":"07/08/2026","SIG_SUB":"N","PART_SECTION":"56.14107(a)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"Fatal","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"07/08/2026","PROPOSED_PENALTY":"151","AMOUNT_DUE":"151","AMOUNT_PAID":"0","CONTESTED_IND":"N","sourceDate":"2026-07-08"},{"SOURCE_ROW_NUMBER":"1358522","VIOLATION_NO":"9625840","VIOLATION_ISSUE_DT":"10/18/2023","SIG_SUB":"N","PART_SECTION":"56.14107(a)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"Fatal","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"10/18/2023","PROPOSED_PENALTY":"143","AMOUNT_DUE":"143","AMOUNT_PAID":"143","CONTESTED_IND":"N","sourceDate":"2023-10-18"},{"SOURCE_ROW_NUMBER":"1358504","VIOLATION_NO":"9624362","VIOLATION_ISSUE_DT":"08/10/2023","SIG_SUB":"N","PART_SECTION":"56.12018","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"Fatal","NO_AFFECTED":"1","NEGLIGENCE":"LowNegligence","TERMINATION_DT":"08/10/2023","PROPOSED_PENALTY":"143","AMOUNT_DUE":"143","AMOUNT_PAID":"143","CONTESTED_IND":"N","sourceDate":"2023-08-10"},{"SOURCE_ROW_NUMBER":"1358503","VIOLATION_NO":"9624361","VIOLATION_ISSUE_DT":"08/10/2023","SIG_SUB":"N","PART_SECTION":"56.14107(a)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"Fatal","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"08/10/2023","PROPOSED_PENALTY":"143","AMOUNT_DUE":"143","AMOUNT_PAID":"143","CONTESTED_IND":"N","sourceDate":"2023-08-10"},{"SOURCE_ROW_NUMBER":"1358502","VIOLATION_NO":"9624360","VIOLATION_ISSUE_DT":"08/10/2023","SIG_SUB":"N","PART_SECTION":"56.14132(b)(2)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"Fatal","NO_AFFECTED":"1","NEGLIGENCE":"LowNegligence","TERMINATION_DT":"08/10/2023","PROPOSED_PENALTY":"143","AMOUNT_DUE":"143","AMOUNT_PAID":"143","CONTESTED_IND":"N","sourceDate":"2023-08-10"},{"SOURCE_ROW_NUMBER":"1358501","VIOLATION_NO":"9624359","VIOLATION_ISSUE_DT":"08/10/2023","SIG_SUB":"Y","PART_SECTION":"56.11012","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Reasonably","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"08/10/2023","PROPOSED_PENALTY":"143","AMOUNT_DUE":"143","AMOUNT_PAID":"143","CONTESTED_IND":"N","sourceDate":"2023-08-10"},{"SOURCE_ROW_NUMBER":"1358500","VIOLATION_NO":"9624358","VIOLATION_ISSUE_DT":"08/10/2023","SIG_SUB":"N","PART_SECTION":"56.14112(a)(1)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"Fatal","NO_AFFECTED":"1","NEGLIGENCE":"LowNegligence","TERMINATION_DT":"08/10/2023","PROPOSED_PENALTY":"143","AMOUNT_DUE":"143","AMOUNT_PAID":"143","CONTESTED_IND":"N","sourceDate":"2023-08-10"},{"SOURCE_ROW_NUMBER":"1358499","VIOLATION_NO":"9624357","VIOLATION_ISSUE_DT":"08/10/2023","SIG_SUB":"N","PART_SECTION":"56.9300(b)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"08/10/2023","PROPOSED_PENALTY":"143","AMOUNT_DUE":"143","AMOUNT_PAID":"143","CONTESTED_IND":"N","sourceDate":"2023-08-10"},{"SOURCE_ROW_NUMBER":"1358481","VIOLATION_NO":"9625072","VIOLATION_ISSUE_DT":"06/29/2022","SIG_SUB":"N","PART_SECTION":"56.12004","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"Fatal","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"06/29/2022","PROPOSED_PENALTY":"133","AMOUNT_DUE":"133","AMOUNT_PAID":"133","CONTESTED_IND":"N","sourceDate":"2022-06-29"},{"SOURCE_ROW_NUMBER":"1358480","VIOLATION_NO":"9625071","VIOLATION_ISSUE_DT":"06/29/2022","SIG_SUB":"N","PART_SECTION":"56.12004","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"Fatal","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"06/29/2022","PROPOSED_PENALTY":"133","AMOUNT_DUE":"133","AMOUNT_PAID":"133","CONTESTED_IND":"N","sourceDate":"2022-06-29"},{"SOURCE_ROW_NUMBER":"1358479","VIOLATION_NO":"9625070","VIOLATION_ISSUE_DT":"06/29/2022","SIG_SUB":"N","PART_SECTION":"56.14112(b)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"Fatal","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"06/29/2022","PROPOSED_PENALTY":"133","AMOUNT_DUE":"133","AMOUNT_PAID":"133","CONTESTED_IND":"N","sourceDate":"2022-06-29"},{"SOURCE_ROW_NUMBER":"1358478","VIOLATION_NO":"9625069","VIOLATION_ISSUE_DT":"06/29/2022","SIG_SUB":"N","PART_SECTION":"56.9300(b)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"06/29/2022","PROPOSED_PENALTY":"133","AMOUNT_DUE":"133","AMOUNT_PAID":"133","CONTESTED_IND":"N","sourceDate":"2022-06-29"}]}],"safety":{"href":"/api/v1/mines/2102641/safety","description":"Full-period safety series, top CFR sections and paginated activity. Requires PostgreSQL."},"silica":{"href":"/api/v1/mines/2102641/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":"Moving machine parts.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14107","part":"56","subchapter":"K","subpart":"M","id":"56.14107","citation":"30 CFR 56.14107","chapterHeading":"CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","subchapterHeading":"SUBCHAPTER K—METAL AND NONMETAL MINE SAFETY AND HEALTH","partHeading":"PART 56—SAFETY AND HEALTH STANDARDS—SURFACE METAL AND NONMETAL MINES","subpartHeading":"","text":null,"occurrenceCount":3},{"chapter":"I","heading":"Identification of power switches.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12018","part":"56","subchapter":"K","subpart":"K","id":"56.12018","citation":"30 CFR 56.12018","chapterHeading":"CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","subchapterHeading":"SUBCHAPTER K—METAL AND NONMETAL MINE SAFETY AND HEALTH","partHeading":"PART 56—SAFETY AND HEALTH STANDARDS—SURFACE METAL AND NONMETAL MINES","subpartHeading":"","text":null,"occurrenceCount":1},{"chapter":"I","heading":"Horns and backup alarms.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14132","part":"56","subchapter":"K","subpart":"M","id":"56.14132","citation":"30 CFR 56.14132","chapterHeading":"CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","subchapterHeading":"SUBCHAPTER K—METAL AND NONMETAL MINE SAFETY AND HEALTH","partHeading":"PART 56—SAFETY AND HEALTH STANDARDS—SURFACE METAL AND NONMETAL MINES","subpartHeading":"","text":null,"occurrenceCount":1},{"chapter":"I","heading":"Protection for openings around travelways.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-J/section-56.11012","part":"56","subchapter":"K","subpart":"J","id":"56.11012","citation":"30 CFR 56.11012","chapterHeading":"CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","subchapterHeading":"SUBCHAPTER K—METAL AND NONMETAL MINE SAFETY AND HEALTH","partHeading":"PART 56—SAFETY AND HEALTH STANDARDS—SURFACE METAL AND NONMETAL MINES","subpartHeading":"","text":null,"occurrenceCount":1},{"chapter":"I","heading":"Construction and maintenance of guards.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14112","part":"56","subchapter":"K","subpart":"M","id":"56.14112","citation":"30 CFR 56.14112","chapterHeading":"CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","subchapterHeading":"SUBCHAPTER K—METAL AND NONMETAL MINE SAFETY AND HEALTH","partHeading":"PART 56—SAFETY AND HEALTH STANDARDS—SURFACE METAL AND NONMETAL MINES","subpartHeading":"","text":null,"occurrenceCount":2},{"chapter":"I","heading":"Berms or guardrails.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-H/section-56.9300","part":"56","subchapter":"K","subpart":"H","id":"56.9300","citation":"30 CFR 56.9300","chapterHeading":"CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","subchapterHeading":"SUBCHAPTER K—METAL AND NONMETAL MINE SAFETY AND HEALTH","partHeading":"PART 56—SAFETY AND HEALTH STANDARDS—SURFACE METAL AND NONMETAL MINES","subpartHeading":"","text":null,"occurrenceCount":2},{"chapter":"I","heading":"Electrical conductors.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12004","part":"56","subchapter":"K","subpart":"K","id":"56.12004","citation":"30 CFR 56.12004","chapterHeading":"CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","subchapterHeading":"SUBCHAPTER K—METAL AND NONMETAL MINE SAFETY AND HEALTH","partHeading":"PART 56—SAFETY AND HEALTH STANDARDS—SURFACE METAL AND NONMETAL MINES","subpartHeading":"","text":null,"occurrenceCount":2}],"fullCorpus":"/data/title30-sections.json"}}},"meta":{"representation":"json","mineId":"2102641","dataSource":"postgres","snapshotId":"2026-10-17T05:35:58.500035+00:00","completedAt":"2026-10-17T06:17:15.228Z","sourceCount":20,"totalRows":15450873}}