{"data":{"schemaVersion":"realm.mine-profile.v1","generatedAt":"2026-10-13T11:26:59.401Z","identity":{"mine_id":"3303938","name":"M & M Strip","status":"Abandoned","status_date":"2002-02-11","mine_type":"Facility","coal_metal":"C","commodity":"Coal (Bituminous)","state":"OH","county":"Tuscarawas","nearest_town":"Sugarcreek","operator_id":"P23949","operator_name":"Copperhead Coal Company","controller_id":"C15714","controller_name":"John  Hess","district":"C03","office":"St. Clairsville OH Field Office","employees":0,"latitude":40.566667,"longitude":-81.583333},"coverage":{"contributingSources":6,"registeredSources":20,"sourceRows":10},"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":"3303938","name":"M & M Strip"},"operator":{"type":"operator","id":"P23949","name":"Copperhead Coal Company"},"controller":{"type":"controller","id":"C15714","name":"John  Hess"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"C10028","name":"Olen O  Miller"},"object":{"type":"mine","id":"3303938","name":"M & M Strip"},"validFrom":"1982-08-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3303938|C10028|1982-08-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P13736","name":"Miller Mining Inc"},"object":{"type":"mine","id":"3303938","name":"M & M Strip"},"validFrom":"1983-04-01","validTo":"1998-03-01","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3303938|P13736|1983-04-01|1998-03-01"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C10028","name":"Olen O  Miller"},"object":{"type":"operator","id":"P13736","name":"Miller Mining Inc"},"validFrom":"1983-04-01","validTo":"1998-03-01","current":false,"derived":true,"evidenceMineId":"3303938","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3303938|P13736|1983-04-01|C10028|1982-08-01|81105"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P23949","name":"Copperhead Coal Company"},"object":{"type":"mine","id":"3303938","name":"M & M Strip"},"validFrom":"1998-03-02","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3303938|P23949|1998-03-02|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C15714","name":"John  Hess"},"object":{"type":"mine","id":"3303938","name":"M & M Strip"},"validFrom":"1998-03-02","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3303938|C15714|1998-03-02|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C15714","name":"John  Hess"},"object":{"type":"operator","id":"P23949","name":"Copperhead Coal Company"},"validFrom":"1998-03-02","validTo":null,"current":true,"derived":true,"evidenceMineId":"3303938","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3303938|P23949|1998-03-02|C15714|1998-03-02|96598"}}],"coverage":{"historyRecords":2,"edgeCount":6,"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":"2002-02-11","lastDate":"2002-02-11","metrics":{},"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":2,"firstDate":"1983-04-01","lastDate":"1998-03-02","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":1,"firstDate":"2000-05-30","lastDate":"2000-05-30","metrics":{"inspectors":1,"recentRows":0,"onSiteHours":0.5,"inspectionHours":2,"inspectionSamples":0},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"1075799","EVENT_NO":"4070904","INSPECTION_BEGIN_DT":"05/30/2000","INSPECTION_END_DT":"05/30/2000","ACTIVITY_CODE":"CFA","ACTIVITY":"MINE IDLE","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"2","SUM_TOTAL_ON_SITE_HOURS":".5","sourceDate":"2000-05-30"}]},{"id":"msha-mine-production-quarterly","name":"Mine Employment and Production — Quarterly","domains":["production","safety","compliance"],"products":["production trend","employee hours","rate denominators","seasonality"],"rowCount":3,"firstDate":null,"lastDate":null,"metrics":{},"periods":{"2000-Q2":{"hours":0,"employees":0,"production":0},"2000-Q1":{"hours":2742,"employees":6,"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":2,"firstDate":null,"lastDate":null,"metrics":{},"periods":{"2000":{"hours":2742,"employees":6,"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":[]}],"safety":{"href":"/api/v1/mines/3303938/safety","description":"Full-period safety series, top CFR sections and paginated activity. Requires PostgreSQL."},"silica":{"href":"/api/v1/mines/3303938/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":[],"fullCorpus":"/data/title30-sections.json"}}},"meta":{"representation":"json","mineId":"3303938","dataSource":"postgres","snapshotId":"2026-10-13T11:19:05.459773+00:00","completedAt":"2026-10-13T11:26:59.401Z","sourceCount":20,"totalRows":17906804}}