{"data":{"schemaVersion":"realm.mine-profile.v1","generatedAt":"2026-10-13T11:26:59.401Z","identity":{"mine_id":"4703718","name":"Thompson Hills","status":"Intermittent","status_date":"2016-01-16","mine_type":"Surface","coal_metal":"M","commodity":"Sand, Industrial NEC","state":"WI","county":"Barron","nearest_town":"Chetek","operator_id":"0182574","operator_name":"Blue Diamond Proppants LLC","controller_id":"0168984","controller_name":"Terrance  Pecha; Jeffrey  Antczak; Paul  Mumm","district":"M4","office":"Duluth MN Field Office","employees":4,"latitude":45.227222,"longitude":-91.721944},"coverage":{"contributingSources":13,"registeredSources":20,"sourceRows":679},"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":"2026-10-13T11:19:05.459773+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":"4703718","name":"Thompson Hills"},"operator":{"type":"operator","id":"0182574","name":"Blue Diamond Proppants LLC"},"controller":{"type":"controller","id":"0168984","name":"Terrance  Pecha; Jeffrey  Antczak; Paul  Mumm"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"0077355","name":"Insight Equity et al"},"object":{"type":"mine","id":"4703718","name":"Thompson Hills"},"validFrom":"2008-06-21","validTo":"2019-12-09","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4703718|0077355|2008-06-21|2019-12-09"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0092166","name":"Superior Silica Sands"},"object":{"type":"mine","id":"4703718","name":"Thompson Hills"},"validFrom":"2014-06-18","validTo":"2022-05-08","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4703718|0092166|2014-06-18|2022-05-08"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0077355","name":"Insight Equity et al"},"object":{"type":"operator","id":"0092166","name":"Superior Silica Sands"},"validFrom":"2014-06-18","validTo":"2019-12-09","current":false,"derived":true,"evidenceMineId":"4703718","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4703718|0092166|2014-06-18|0077355|2008-06-21|12140"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0153401","name":"Oak Hill Advisors et al"},"object":{"type":"mine","id":"4703718","name":"Thompson Hills"},"validFrom":"2019-12-10","validTo":"2025-12-15","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4703718|0153401|2019-12-10|2025-12-15"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0153401","name":"Oak Hill Advisors et al"},"object":{"type":"operator","id":"0092166","name":"Superior Silica Sands"},"validFrom":"2019-12-10","validTo":"2022-05-08","current":false,"derived":true,"evidenceMineId":"4703718","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4703718|0092166|2014-06-18|0153401|2019-12-10|31807"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0153401","name":"HPS Investment Partners et al"},"object":{"type":"operator","id":"0092166","name":"Superior Silica Sands"},"validFrom":"2019-12-10","validTo":"2022-05-08","current":false,"derived":true,"evidenceMineId":"4703718","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4703718|0092166|2014-06-18|0153401|2019-12-10|31808"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0153401","name":"PIMCO et al"},"object":{"type":"operator","id":"0092166","name":"Superior Silica Sands"},"validFrom":"2019-12-10","validTo":"2022-05-08","current":false,"derived":true,"evidenceMineId":"4703718","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4703718|0092166|2014-06-18|0153401|2019-12-10|31809"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0182574","name":"Blue Diamond Proppants LLC"},"object":{"type":"mine","id":"4703718","name":"Thompson Hills"},"validFrom":"2022-05-09","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4703718|0182574|2022-05-09|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0168984","name":"Terrance  Pecha et al"},"object":{"type":"mine","id":"4703718","name":"Thompson Hills"},"validFrom":"2022-05-09","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4703718|0168984|2022-05-09|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0168984","name":"Terrance  Pecha et al"},"object":{"type":"operator","id":"0182574","name":"Blue Diamond Proppants LLC"},"validFrom":"2022-05-09","validTo":null,"current":true,"derived":true,"evidenceMineId":"4703718","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4703718|0182574|2022-05-09|0168984|2022-05-09|35695"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0168984","name":"Paul  Mumm et al"},"object":{"type":"operator","id":"0182574","name":"Blue Diamond Proppants LLC"},"validFrom":"2022-05-09","validTo":null,"current":true,"derived":true,"evidenceMineId":"4703718","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4703718|0182574|2022-05-09|0168984|2022-05-09|35696"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0168984","name":"Jeffrey  Antczak et al"},"object":{"type":"operator","id":"0182574","name":"Blue Diamond Proppants LLC"},"validFrom":"2022-05-09","validTo":null,"current":true,"derived":true,"evidenceMineId":"4703718","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4703718|0182574|2022-05-09|0168984|2022-05-09|35697"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0189021","name":"Iron Oak Energy Solutions LLC"},"object":{"type":"mine","id":"4703718","name":"Thompson Hills"},"validFrom":"2025-12-16","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4703718|0189021|2025-12-16|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0189021","name":"Iron Oak Energy Solutions LLC"},"object":{"type":"operator","id":"0092166","name":"Superior Silica Sands"},"validFrom":"2025-12-16","validTo":"2022-05-08","current":false,"derived":true,"evidenceMineId":"4703718","intervalAnomaly":true,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4703718|0092166|2014-06-18|0189021|2025-12-16|40286"}}],"coverage":{"historyRecords":8,"edgeCount":14,"intervalAnomalies":1,"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":4,"firstDate":"2015-11-16","lastDate":"2023-07-23","metrics":{"daysLost":10,"injuries":4,"fatalities":0,"recentRows":2,"restrictedDays":35,"contractorRecords":2},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"275042","DOCUMENT_NO":"220232160022","ACCIDENT_DT":"07/23/2023","DEGREE_INJURY":"PERM TOT OR PERM PRTL DISABLTY","CLASSIFICATION":"HANDLING OF MATERIALS","ACCIDENT_TYPE":"Over-exertion NEC","OCCUPATION":"Warehouseman, Bagger, Palletizer/Stacker, Store keeper, Packager, Fabricator, Cleaning plant operator","NO_INJURIES":"1","DAYS_LOST":"0","NARRATIVE":"The mine was not made aware of the injury until 08/02/2023 and all attempts to get information from the injured miner have not generated a response other than to say the miner was injured on the morning of Sunday July 23rd.   The times of the incident are only entered because the online form requires them, but do not represent a factual time of the injury.","sourceDate":"2023-07-23"},{"SOURCE_ROW_NUMBER":"17012","DOCUMENT_NO":"220230110009","ACCIDENT_DT":"01/09/2023","DEGREE_INJURY":"NO DYS AWY FRM WRK,NO RSTR ACT","CLASSIFICATION":"HANDLING OF MATERIALS","ACCIDENT_TYPE":"Caught in, under or between a moving and a stationary object","OCCUPATION":"Miner, Prospector, NEC","NO_INJURIES":"1","DAYS_LOST":"0","NARRATIVE":"At 1:20 PM, IT WAS REPORTED THAT EMPLOYEE HAD CUT A FINGER FROM WORKING ON A GARAGE DOOR OPENER. EE WAS SETTING THE OPEN AND CLOSE LIMITS ON ROLLERS. IT WAS REPORTED THEY LOST THEIR GRIP AND HAND SLIPPED AND CAUGHT LEFT RING FINGER IN THE CHAIN AND SPROCKET.","sourceDate":"2023-01-09"},{"SOURCE_ROW_NUMBER":"158986","DOCUMENT_NO":"220172140003","ACCIDENT_DT":"07/25/2017","DEGREE_INJURY":"DYS AWY FRM WRK & RESTRCTD ACT","CLASSIFICATION":"SLIP OR FALL OF PERSON","ACCIDENT_TYPE":"Fall from machine","OCCUPATION":"Laborer, Blacksmith, Bull gang, Parts runner, Roustabout, Pick-up man, Pitman","NO_INJURIES":"1","DAYS_LOST":"10","NARRATIVE":"Employee was helping change the paddles on a scrubber.  Employee was standing on the frame or the scrubber tower guiding the scrubber's into the chamber when employee lost balance and fell on to catwalk about 5 feet below.  Employee was wearing fall protection but was not tied high enough to dampen the fall.","sourceDate":"2017-07-25"},{"SOURCE_ROW_NUMBER":"107056","DOCUMENT_NO":"220153230016","ACCIDENT_DT":"11/16/2015","DEGREE_INJURY":"NO DYS AWY FRM WRK,NO RSTR ACT","CLASSIFICATION":"SLIP OR FALL OF PERSON","ACCIDENT_TYPE":"Fall onto or against objects","OCCUPATION":"Maintenance man, Mechanic,  Repair/Serviceman, Boilermaker, Fueler, Tire tech, Field service tech","NO_INJURIES":"1","DAYS_LOST":"0","NARRATIVE":"The worker heard air leaking out of a bladder used for the final cleaning of the slurry line. When he went in front of the bladder it let loose and struck him in the stomach knocking him backwards causing him to lose balance and hit the back of his head on the pump behind him causing a small cut on the back of his head. That night he received 2 staples to keep cut closed.","sourceDate":"2015-11-16"}]},{"id":"msha-addresses","name":"Addresses of Record","domains":["identity","logistics"],"products":["entity resolution","address history","facility geocoding"],"rowCount":1,"firstDate":"2016-01-16","lastDate":"2016-01-16","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":"2015-04-20","lastDate":"2020-03-11","metrics":{"ss":2,"delinquent":27,"recentRows":0,"paidPenalty":3118,"proposedPenalty":3118,"currentAssessment":3118},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"2595429","VIOLATION_NO":"9448177","ISSUE_DT":"03/11/2020","CFR_STANDARD_CD":"56.11012","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"123.00","CURRENT_ASSESSMENT_AMT":"123.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2020-03-11"},{"SOURCE_ROW_NUMBER":"2595428","VIOLATION_NO":"9448176","ISSUE_DT":"03/11/2020","CFR_STANDARD_CD":"56.12032","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"123.00","CURRENT_ASSESSMENT_AMT":"123.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2020-03-11"},{"SOURCE_ROW_NUMBER":"2595427","VIOLATION_NO":"9448175","ISSUE_DT":"03/11/2020","CFR_STANDARD_CD":"56.4201(a)(1)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"123.00","CURRENT_ASSESSMENT_AMT":"123.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2020-03-11"},{"SOURCE_ROW_NUMBER":"2595426","VIOLATION_NO":"9448174","ISSUE_DT":"03/11/2020","CFR_STANDARD_CD":"56.16005","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"123.00","CURRENT_ASSESSMENT_AMT":"123.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2020-03-11"},{"SOURCE_ROW_NUMBER":"2464654","VIOLATION_NO":"9381931","ISSUE_DT":"07/23/2019","CFR_STANDARD_CD":"56.14100(b)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"121.00","CURRENT_ASSESSMENT_AMT":"121.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2019-07-23"},{"SOURCE_ROW_NUMBER":"2464653","VIOLATION_NO":"9381930","ISSUE_DT":"07/23/2019","CFR_STANDARD_CD":"56.14101(a)(2)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"121.00","CURRENT_ASSESSMENT_AMT":"121.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2019-07-23"},{"SOURCE_ROW_NUMBER":"2464652","VIOLATION_NO":"9381929","ISSUE_DT":"07/23/2019","CFR_STANDARD_CD":"56.4101","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"121.00","CURRENT_ASSESSMENT_AMT":"121.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2019-07-23"},{"SOURCE_ROW_NUMBER":"2464651","VIOLATION_NO":"9381928","ISSUE_DT":"07/23/2019","CFR_STANDARD_CD":"56.12028","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"121.00","CURRENT_ASSESSMENT_AMT":"121.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2019-07-23"},{"SOURCE_ROW_NUMBER":"2464650","VIOLATION_NO":"9381927","ISSUE_DT":"07/23/2019","CFR_STANDARD_CD":"56.4201(a)(2)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"121.00","CURRENT_ASSESSMENT_AMT":"121.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2019-07-23"},{"SOURCE_ROW_NUMBER":"2464649","VIOLATION_NO":"9381926","ISSUE_DT":"07/23/2019","CFR_STANDARD_CD":"46.11(b)(6)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"121.00","CURRENT_ASSESSMENT_AMT":"121.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2019-07-23"},{"SOURCE_ROW_NUMBER":"2464648","VIOLATION_NO":"9381925","ISSUE_DT":"07/23/2019","CFR_STANDARD_CD":"56.14207","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"121.00","CURRENT_ASSESSMENT_AMT":"121.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2019-07-23"},{"SOURCE_ROW_NUMBER":"2464647","VIOLATION_NO":"9381924","ISSUE_DT":"07/23/2019","CFR_STANDARD_CD":"56.12004","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"121.00","CURRENT_ASSESSMENT_AMT":"121.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2019-07-23"}]},{"id":"msha-conferences","name":"Conferences","domains":["compliance","legal"],"products":["conference history","post-issuance changes","citation lifecycle"],"rowCount":4,"firstDate":"2015-09-04","lastDate":"2019-09-25","metrics":{"linkedIssuances":4},"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":373,"firstDate":null,"lastDate":null,"metrics":{"linkedContractors":6,"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":78,"firstDate":null,"lastDate":null,"metrics":{"linkedContractors":6,"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":8,"firstDate":"2014-06-18","lastDate":"2022-05-09","metrics":{"recentRows":3,"currentOperatorTenures":3,"completedOperatorTenures":5},"periods":{},"recentRecords":[]},{"id":"msha-inspections","name":"Inspections","domains":["safety","compliance"],"products":["inspection mix","on-site hours","event context","citation rate denominator"],"rowCount":20,"firstDate":"2015-04-20","lastDate":"2026-05-04","metrics":{"inspectors":21,"recentRows":9,"onSiteHours":132.75,"inspectionHours":229.5,"inspectionSamples":0},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"407909","EVENT_NO":"F02F792","INSPECTION_BEGIN_DT":"05/04/2026","INSPECTION_END_DT":"05/05/2026","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"14.75","SUM_TOTAL_ON_SITE_HOURS":"9.75","sourceDate":"2026-05-04"},{"SOURCE_ROW_NUMBER":"595025","EVENT_NO":"F01A8FD","INSPECTION_BEGIN_DT":"07/18/2025","INSPECTION_END_DT":"07/18/2025","ACTIVITY_CODE":"E28","ACTIVITY":"Mine Idle Activity","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"1.75","SUM_TOTAL_ON_SITE_HOURS":".5","sourceDate":"2025-07-18"},{"SOURCE_ROW_NUMBER":"330967","EVENT_NO":"6952200","INSPECTION_BEGIN_DT":"04/17/2024","INSPECTION_END_DT":"04/17/2024","ACTIVITY_CODE":"E28","ACTIVITY":"Mine Idle Activity","NBR_INSPECTOR":"2","SUM_TOTAL_INSP_HOURS":"4.5","SUM_TOTAL_ON_SITE_HOURS":"3","sourceDate":"2024-04-17"},{"SOURCE_ROW_NUMBER":"565273","EVENT_NO":"6906351","INSPECTION_BEGIN_DT":"11/07/2022","INSPECTION_END_DT":"11/08/2022","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"27.75","SUM_TOTAL_ON_SITE_HOURS":"17.75","sourceDate":"2022-11-07"},{"SOURCE_ROW_NUMBER":"6977","EVENT_NO":"6901769","INSPECTION_BEGIN_DT":"07/12/2022","INSPECTION_END_DT":"07/13/2022","ACTIVITY_CODE":"E16","ACTIVITY":"Spot Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"13","SUM_TOTAL_ON_SITE_HOURS":"9.25","sourceDate":"2022-07-12"},{"SOURCE_ROW_NUMBER":"1151836","EVENT_NO":"6901743","INSPECTION_BEGIN_DT":"05/09/2022","INSPECTION_END_DT":"05/10/2022","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"16","SUM_TOTAL_ON_SITE_HOURS":"6.75","sourceDate":"2022-05-09"},{"SOURCE_ROW_NUMBER":"50325","EVENT_NO":"6901742","INSPECTION_BEGIN_DT":"05/09/2022","INSPECTION_END_DT":"05/09/2022","ACTIVITY_CODE":"E04","ACTIVITY":"Verbal Hazard Complaint Inspections","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"6.5","SUM_TOTAL_ON_SITE_HOURS":"1.75","sourceDate":"2022-05-09"},{"SOURCE_ROW_NUMBER":"169008","EVENT_NO":"6901514","INSPECTION_BEGIN_DT":"10/05/2021","INSPECTION_END_DT":"10/05/2021","ACTIVITY_CODE":"E23","ACTIVITY":"Impoundment Spot Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"6","SUM_TOTAL_ON_SITE_HOURS":".75","sourceDate":"2021-10-05"},{"SOURCE_ROW_NUMBER":"858092","EVENT_NO":"6837895","INSPECTION_BEGIN_DT":"07/08/2021","INSPECTION_END_DT":"07/08/2021","ACTIVITY_CODE":"E28","ACTIVITY":"Mine Idle Activity","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"1.25","SUM_TOTAL_ON_SITE_HOURS":".5","sourceDate":"2021-07-08"},{"SOURCE_ROW_NUMBER":"384743","EVENT_NO":"6837847","INSPECTION_BEGIN_DT":"10/21/2020","INSPECTION_END_DT":"10/21/2020","ACTIVITY_CODE":"E16","ACTIVITY":"Spot Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"2.75","SUM_TOTAL_ON_SITE_HOURS":".75","sourceDate":"2020-10-21"},{"SOURCE_ROW_NUMBER":"572595","EVENT_NO":"6837284","INSPECTION_BEGIN_DT":"03/11/2020","INSPECTION_END_DT":"03/11/2020","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"8.75","SUM_TOTAL_ON_SITE_HOURS":"4","sourceDate":"2020-03-11"},{"SOURCE_ROW_NUMBER":"412991","EVENT_NO":"6750954","INSPECTION_BEGIN_DT":"08/14/2019","INSPECTION_END_DT":"08/14/2019","ACTIVITY_CODE":"E15","ACTIVITY":"Compliance Follow-up Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"2.25","SUM_TOTAL_ON_SITE_HOURS":"1.25","sourceDate":"2019-08-14"}]},{"id":"msha-mine-production-quarterly","name":"Mine Employment and Production — Quarterly","domains":["production","safety","compliance"],"products":["production trend","employee hours","rate denominators","seasonality"],"rowCount":90,"firstDate":null,"lastDate":null,"metrics":{},"periods":{"2026-Q2":{"hours":2162,"employees":5,"production":0},"2026-Q1":{"hours":961,"employees":8,"production":0},"2025-Q4":{"hours":0,"employees":0,"production":0},"2025-Q3":{"hours":0,"employees":0,"production":0},"2025-Q2":{"hours":0,"employees":0,"production":0},"2025-Q1":{"hours":0,"employees":0,"production":0},"2024-Q4":{"hours":6608,"employees":13,"production":0},"2024-Q1":{"hours":0,"employees":0,"production":0},"2023-Q4":{"hours":1760,"employees":9,"production":0},"2023-Q3":{"hours":5239,"employees":10,"production":0},"2023-Q2":{"hours":4588,"employees":10,"production":0},"2023-Q1":{"hours":0,"employees":0,"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":20,"firstDate":null,"lastDate":null,"metrics":{},"periods":{"2015":{"hours":31467,"employees":19,"production":0},"2016":{"hours":18147,"employees":14,"production":0},"2017":{"hours":34832,"employees":16,"production":0},"2018":{"hours":33591,"employees":14,"production":0},"2019":{"hours":16349,"employees":7,"production":0},"2020":{"hours":232,"employees":1,"production":0},"2022":{"hours":10704,"employees":10,"production":0},"2023":{"hours":11587,"employees":10,"production":0},"2024":{"hours":6608,"employees":13,"production":0},"2026":{"hours":3123,"employees":7,"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":13,"firstDate":"2016-12-06","lastDate":"2026-05-05","metrics":{"recentRows":5,"actionTaken":13,"maxExposureRatio":0,"overExposureLimit":0,"exposureRatioTotal":0},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"312314","EVENT_NO":"F02F792","SAMPLE_NO":"000000202601899600","SAMPLE_DATE":"05/05/2026","CONTAMINANT_DESC":"Respirable dust, <.1mg","CONCENTRATION":"0000.00","EXPOSURE_LIMIT":"0000.00","C_OVER_E":"00.00","JOB_CD_DESC":"Yard Engine Operator","ACTION_TAKEN_DESC":"NO ACTION","sourceDate":"2026-05-05"},{"SOURCE_ROW_NUMBER":"312313","EVENT_NO":"F02F792","SAMPLE_NO":"000000202601899500","SAMPLE_DATE":"05/05/2026","CONTAMINANT_DESC":"Respirable dust, <.1mg","CONCENTRATION":"0000.00","EXPOSURE_LIMIT":"0000.00","C_OVER_E":"00.00","JOB_CD_DESC":"Complete Load-Haul-Dump","ACTION_TAKEN_DESC":"NO ACTION","sourceDate":"2026-05-05"},{"SOURCE_ROW_NUMBER":"268640","EVENT_NO":"6906351","SAMPLE_NO":"000000202204712500","SAMPLE_DATE":"11/08/2022","CONTAMINANT_DESC":"Respirable dust, <.1mg","CONCENTRATION":"0000.00","EXPOSURE_LIMIT":"0000.00","C_OVER_E":"00.00","JOB_CD_DESC":"Building Repair/Maint.","ACTION_TAKEN_DESC":"NO ACTION","sourceDate":"2022-11-08"},{"SOURCE_ROW_NUMBER":"268639","EVENT_NO":"6906351","SAMPLE_NO":"000000202204712400","SAMPLE_DATE":"11/08/2022","CONTAMINANT_DESC":"Respirable dust, <.1mg","CONCENTRATION":"0000.00","EXPOSURE_LIMIT":"0000.00","C_OVER_E":"00.00","JOB_CD_DESC":"Laborer, Bullgang","ACTION_TAKEN_DESC":"NO ACTION","sourceDate":"2022-11-08"},{"SOURCE_ROW_NUMBER":"268638","EVENT_NO":"6906351","SAMPLE_NO":"000000202204712300","SAMPLE_DATE":"11/08/2022","CONTAMINANT_DESC":"Respirable dust, <.1mg","CONCENTRATION":"0000.00","EXPOSURE_LIMIT":"0000.00","C_OVER_E":"00.00","JOB_CD_DESC":"Washer Operator","ACTION_TAKEN_DESC":"NO ACTION","sourceDate":"2022-11-08"},{"SOURCE_ROW_NUMBER":"229910","EVENT_NO":"6750937","SAMPLE_NO":"000000201904153200","SAMPLE_DATE":"07/23/2019","CONTAMINANT_DESC":"Respirable dust, <.1mg","CONCENTRATION":"0000.00","EXPOSURE_LIMIT":"0000.00","C_OVER_E":"00.00","JOB_CD_DESC":"Mechanic","ACTION_TAKEN_DESC":"NO ACTION","sourceDate":"2019-07-23"},{"SOURCE_ROW_NUMBER":"229909","EVENT_NO":"6750937","SAMPLE_NO":"000000201904153100","SAMPLE_DATE":"07/23/2019","CONTAMINANT_DESC":"Unlisted Particulate, respirable, <1% Qtz","CONCENTRATION":"0000.13","EXPOSURE_LIMIT":"0000.00","C_OVER_E":"00.00","JOB_CD_DESC":"Supervisor, Co. Official","ACTION_TAKEN_DESC":"NO ACTION","sourceDate":"2019-07-23"},{"SOURCE_ROW_NUMBER":"229908","EVENT_NO":"6750937","SAMPLE_NO":"000000201904153000","SAMPLE_DATE":"07/23/2019","CONTAMINANT_DESC":"Respirable dust, <.1mg","CONCENTRATION":"0000.00","EXPOSURE_LIMIT":"0000.00","C_OVER_E":"00.00","JOB_CD_DESC":"Mechanic","ACTION_TAKEN_DESC":"NO ACTION","sourceDate":"2019-07-23"},{"SOURCE_ROW_NUMBER":"206369","EVENT_NO":"6743863","SAMPLE_NO":"000000201802362800","SAMPLE_DATE":"05/01/2018","CONTAMINANT_DESC":"Respirable dust, <.1mg","CONCENTRATION":"0000.00","EXPOSURE_LIMIT":"0000.00","C_OVER_E":"00.00","JOB_CD_DESC":"Washer Operator","ACTION_TAKEN_DESC":"NO ACTION","sourceDate":"2018-05-01"},{"SOURCE_ROW_NUMBER":"206368","EVENT_NO":"6743863","SAMPLE_NO":"000000201802362700","SAMPLE_DATE":"05/01/2018","CONTAMINANT_DESC":"Respirable dust, <.1mg","CONCENTRATION":"0000.00","EXPOSURE_LIMIT":"0000.00","C_OVER_E":"00.00","JOB_CD_DESC":"Washer Operator","ACTION_TAKEN_DESC":"NO ACTION","sourceDate":"2018-05-01"},{"SOURCE_ROW_NUMBER":"206367","EVENT_NO":"6743863","SAMPLE_NO":"000000201802362600","SAMPLE_DATE":"05/01/2018","CONTAMINANT_DESC":"Respirable dust, <.1mg","CONCENTRATION":"0000.00","EXPOSURE_LIMIT":"0000.00","C_OVER_E":"00.00","JOB_CD_DESC":"Washer Operator","ACTION_TAKEN_DESC":"NO ACTION","sourceDate":"2018-05-01"},{"SOURCE_ROW_NUMBER":"206366","EVENT_NO":"6743863","SAMPLE_NO":"000000201802362500","SAMPLE_DATE":"05/01/2018","CONTAMINANT_DESC":"Respirable dust, <.1mg","CONCENTRATION":"0000.00","EXPOSURE_LIMIT":"0000.00","C_OVER_E":"00.00","JOB_CD_DESC":"Mechanic","ACTION_TAKEN_DESC":"NO ACTION","sourceDate":"2018-05-01"}]},{"id":"msha-violations","name":"Violations","domains":["compliance","safety","legal"],"products":["citation and order record","condition text","Title 30 linkage","abatement patterns"],"rowCount":40,"firstDate":"2015-04-20","lastDate":"2022-11-08","metrics":{"ss":8,"amountDue":3118,"contested":0,"amountPaid":3118,"recentRows":13,"section104d":0,"unterminated":0,"proposedPenalty":3118},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"3032542","VIOLATION_NO":"9486834","VIOLATION_ISSUE_DT":"11/08/2022","SIG_SUB":"N","PART_SECTION":"50.30(a)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"NoLikelihood","INJ_ILLNESS":"NoLostDays","NO_AFFECTED":"0","NEGLIGENCE":"LowNegligence","TERMINATION_DT":"11/08/2022","CONTESTED_IND":"N","sourceDate":"2022-11-08"},{"SOURCE_ROW_NUMBER":"3032541","VIOLATION_NO":"9486833","VIOLATION_ISSUE_DT":"11/07/2022","SIG_SUB":"N","PART_SECTION":"56.14112(a)(1)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"Permanent","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"11/08/2022","CONTESTED_IND":"N","sourceDate":"2022-11-07"},{"SOURCE_ROW_NUMBER":"3032540","VIOLATION_NO":"9486832","VIOLATION_ISSUE_DT":"11/07/2022","SIG_SUB":"N","PART_SECTION":"56.11002","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"Fatal","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"11/08/2022","CONTESTED_IND":"N","sourceDate":"2022-11-07"},{"SOURCE_ROW_NUMBER":"3032523","VIOLATION_NO":"9486360","VIOLATION_ISSUE_DT":"07/12/2022","SIG_SUB":"Y","PART_SECTION":"56.9100(a)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Reasonably","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"07/13/2022","CONTESTED_IND":"N","sourceDate":"2022-07-12"},{"SOURCE_ROW_NUMBER":"3032522","VIOLATION_NO":"9486359","VIOLATION_ISSUE_DT":"07/12/2022","SIG_SUB":"Y","PART_SECTION":"56.20011","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Reasonably","INJ_ILLNESS":"Fatal","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"07/13/2022","CONTESTED_IND":"N","sourceDate":"2022-07-12"},{"SOURCE_ROW_NUMBER":"3032521","VIOLATION_NO":"9486358","VIOLATION_ISSUE_DT":"07/12/2022","SIG_SUB":"Y","PART_SECTION":"56.9300(b)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Reasonably","INJ_ILLNESS":"Fatal","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"07/12/2022","CONTESTED_IND":"N","sourceDate":"2022-07-12"},{"SOURCE_ROW_NUMBER":"3032520","VIOLATION_NO":"9486322","VIOLATION_ISSUE_DT":"05/09/2022","SIG_SUB":"Y","PART_SECTION":"56.20003(a)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Reasonably","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"05/10/2022","CONTESTED_IND":"N","sourceDate":"2022-05-09"},{"SOURCE_ROW_NUMBER":"3032519","VIOLATION_NO":"9486321","VIOLATION_ISSUE_DT":"05/09/2022","SIG_SUB":"N","PART_SECTION":"56.4201(b)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"NoLikelihood","INJ_ILLNESS":"NoLostDays","NO_AFFECTED":"0","NEGLIGENCE":"LowNegligence","TERMINATION_DT":"05/10/2022","CONTESTED_IND":"N","sourceDate":"2022-05-09"},{"SOURCE_ROW_NUMBER":"3032518","VIOLATION_NO":"9486320","VIOLATION_ISSUE_DT":"05/09/2022","SIG_SUB":"N","PART_SECTION":"56.18002(b)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"NoLikelihood","INJ_ILLNESS":"NoLostDays","NO_AFFECTED":"0","NEGLIGENCE":"LowNegligence","TERMINATION_DT":"05/10/2022","CONTESTED_IND":"N","sourceDate":"2022-05-09"},{"SOURCE_ROW_NUMBER":"3032517","VIOLATION_NO":"9486319","VIOLATION_ISSUE_DT":"05/09/2022","SIG_SUB":"N","PART_SECTION":"56.18002(b)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"NoLikelihood","INJ_ILLNESS":"NoLostDays","NO_AFFECTED":"0","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"05/10/2022","CONTESTED_IND":"N","sourceDate":"2022-05-09"},{"SOURCE_ROW_NUMBER":"3032516","VIOLATION_NO":"9486317","VIOLATION_ISSUE_DT":"05/09/2022","SIG_SUB":"N","PART_SECTION":"56.1000","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"NoLikelihood","INJ_ILLNESS":"NoLostDays","NO_AFFECTED":"0","NEGLIGENCE":"LowNegligence","TERMINATION_DT":"05/10/2022","CONTESTED_IND":"N","sourceDate":"2022-05-09"},{"SOURCE_ROW_NUMBER":"3032515","VIOLATION_NO":"9486316","VIOLATION_ISSUE_DT":"05/09/2022","SIG_SUB":"Y","PART_SECTION":"56.15004","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Reasonably","INJ_ILLNESS":"Permanent","NO_AFFECTED":"3","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"05/09/2022","CONTESTED_IND":"N","sourceDate":"2022-05-09"}]}],"safety":{"href":"/api/v1/mines/4703718/safety","description":"Full-period safety series, top CFR sections and paginated activity. Requires PostgreSQL."},"silica":{"href":"/api/v1/mines/4703718/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":"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":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":1},{"chapter":"I","heading":"Handrails and toeboards.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-J/section-56.11002","part":"56","subchapter":"K","subpart":"J","id":"56.11002","citation":"30 CFR 56.11002","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":"Traffic control.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-H/section-56.9100","part":"56","subchapter":"K","subpart":"H","id":"56.9100","citation":"30 CFR 56.9100","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":"Barricades and warning signs.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-S/section-56.20011","part":"56","subchapter":"K","subpart":"S","id":"56.20011","citation":"30 CFR 56.20011","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":"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":1},{"chapter":"I","heading":"Housekeeping.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-S/section-56.20003","part":"56","subchapter":"K","subpart":"S","id":"56.20003","citation":"30 CFR 56.20003","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":"Inspection.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4201","part":"56","subchapter":"K","subpart":"C","id":"56.4201","citation":"30 CFR 56.4201","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":"Examination of working places.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-Q/section-56.18002","part":"56","subchapter":"K","subpart":"Q","id":"56.18002","citation":"30 CFR 56.18002","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":"Notification of commencement of operations and closing of mines.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-A/section-56.1000","part":"56","subchapter":"K","subpart":"A","id":"56.1000","citation":"30 CFR 56.1000","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":"Eye protection.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-N/section-56.15004","part":"56","subchapter":"K","subpart":"N","id":"56.15004","citation":"30 CFR 56.15004","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}],"fullCorpus":"/data/title30-sections.json"}}},"meta":{"representation":"json","mineId":"4703718","dataSource":"postgres","snapshotId":"2026-10-13T11:19:05.459773+00:00","completedAt":"2026-10-13T11:26:59.401Z","sourceCount":20,"totalRows":17906804}}