{"data":{"schemaVersion":"realm.mine-profile.v1","generatedAt":"2026-10-13T11:26:59.401Z","identity":{"mine_id":"4001833","name":"Hard Rock Mine","status":"Abandoned","status_date":"1976-07-29","mine_type":"Surface","coal_metal":"C","commodity":"Coal (Bituminous)","state":"TN","county":"Claiborne","nearest_town":"","operator_id":"P03461","operator_name":"Hard Rock Coal Company","controller_id":"C02864","controller_name":"Morris James F","district":"C03","office":"Morgantown District","employees":0,"latitude":null,"longitude":null},"coverage":{"contributingSources":3,"registeredSources":20,"sourceRows":4},"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":"4001833","name":"Hard Rock Mine"},"operator":{"type":"operator","id":"P03461","name":"Hard Rock Coal Company"},"controller":{"type":"controller","id":"C02864","name":"Morris James F"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"P03459","name":"Hard Rock Coal Company"},"object":{"type":"mine","id":"4001833","name":"Hard Rock Mine"},"validFrom":"1975-09-04","validTo":"1976-03-10","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4001833|P03459|1975-09-04|1976-03-10"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C02862","name":"Vaughn Ross"},"object":{"type":"mine","id":"4001833","name":"Hard Rock Mine"},"validFrom":"1975-09-04","validTo":"1976-03-10","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4001833|C02862|1975-09-04|1976-03-10"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C02862","name":"Vaughn Ross"},"object":{"type":"operator","id":"P03459","name":"Hard Rock Coal Company"},"validFrom":"1975-09-04","validTo":"1976-03-10","current":false,"derived":true,"evidenceMineId":"4001833","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4001833|P03459|1975-09-04|C02862|1975-09-04|61029"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P03461","name":"Hard Rock Coal Company"},"object":{"type":"mine","id":"4001833","name":"Hard Rock Mine"},"validFrom":"1976-03-11","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4001833|P03461|1976-03-11|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C02864","name":"Morris James F"},"object":{"type":"mine","id":"4001833","name":"Hard Rock Mine"},"validFrom":"1976-03-11","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4001833|C02864|1976-03-11|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C02864","name":"Morris James F"},"object":{"type":"operator","id":"P03461","name":"Hard Rock Coal Company"},"validFrom":"1976-03-11","validTo":null,"current":true,"derived":true,"evidenceMineId":"4001833","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4001833|P03461|1976-03-11|C02864|1976-03-11|61032"}}],"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":"1976-07-29","lastDate":"1976-07-29","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":"1975-09-04","lastDate":"1976-03-11","metrics":{"recentRows":0,"currentOperatorTenures":1,"completedOperatorTenures":1},"periods":{},"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/4001833/safety","description":"Full-period safety series, top CFR sections and paginated activity. Requires PostgreSQL."},"silica":{"href":"/api/v1/mines/4001833/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":"4001833","dataSource":"postgres","snapshotId":"2026-10-13T11:19:05.459773+00:00","completedAt":"2026-10-13T11:26:59.401Z","sourceCount":20,"totalRows":17906804}}