{"data":{"schemaVersion":"realm.mine-profile.v1","generatedAt":"2026-10-13T11:26:59.401Z","identity":{"mine_id":"1502750","name":"No 7-A Mine (D)","status":"Abandoned and Sealed","status_date":"1983-06-30","mine_type":"Underground","coal_metal":"C","commodity":"Coal (Bituminous)","state":"KY","county":"Pike","nearest_town":"Regina","operator_id":"P00396","operator_name":"Wellmore Coal Corp","controller_id":"C00375","controller_name":"United  Company","district":"C05","office":"Norton VA Field Office","employees":0,"latitude":37.3694,"longitude":-82.4092},"coverage":{"contributingSources":3,"registeredSources":20,"sourceRows":7},"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":"1502750","name":"No 7-A Mine (D)"},"operator":{"type":"operator","id":"P00396","name":"Wellmore Coal Corp"},"controller":{"type":"controller","id":"C00375","name":"United  Company"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"C00375","name":"United  Company"},"object":{"type":"mine","id":"1502750","name":"No 7-A Mine (D)"},"validFrom":"1950-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1502750|C00375|1950-01-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P02477","name":"Harless Creek Fuel Company"},"object":{"type":"mine","id":"1502750","name":"No 7-A Mine (D)"},"validFrom":"1971-02-01","validTo":"1977-08-28","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1502750|P02477|1971-02-01|1977-08-28"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C02133","name":"Ratliff Daniel L"},"object":{"type":"mine","id":"1502750","name":"No 7-A Mine (D)"},"validFrom":"1971-02-01","validTo":"1977-08-28","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1502750|C02133|1971-02-01|1977-08-28"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C02133","name":"Ratliff Daniel L"},"object":{"type":"operator","id":"P02477","name":"Harless Creek Fuel Company"},"validFrom":"1971-02-01","validTo":"1977-08-28","current":false,"derived":true,"evidenceMineId":"1502750","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1502750|P02477|1971-02-01|C02133|1971-02-01|57571"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P13164","name":"Regina Fuel Company"},"object":{"type":"mine","id":"1502750","name":"No 7-A Mine (D)"},"validFrom":"1977-08-29","validTo":"1982-01-21","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1502750|P13164|1977-08-29|1982-01-21"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C02070","name":"Ratliff Donald E"},"object":{"type":"mine","id":"1502750","name":"No 7-A Mine (D)"},"validFrom":"1977-08-29","validTo":"1982-01-21","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1502750|C02070|1977-08-29|1982-01-21"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C02070","name":"Ratliff Donald E"},"object":{"type":"operator","id":"P13164","name":"Regina Fuel Company"},"validFrom":"1977-08-29","validTo":"1982-01-21","current":false,"derived":true,"evidenceMineId":"1502750","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1502750|P13164|1977-08-29|C02070|1977-08-29|57360"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C09203","name":"Stiltner Paul E"},"object":{"type":"mine","id":"1502750","name":"No 7-A Mine (D)"},"validFrom":"1981-09-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1502750|C09203|1981-09-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P12989","name":"Regina Fuel Company"},"object":{"type":"mine","id":"1502750","name":"No 7-A Mine (D)"},"validFrom":"1982-01-22","validTo":"1982-08-22","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1502750|P12989|1982-01-22|1982-08-22"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C09551","name":"Thacker Marvin & Howard Sellards"},"object":{"type":"mine","id":"1502750","name":"No 7-A Mine (D)"},"validFrom":"1982-01-22","validTo":"1982-08-22","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1502750|C09551|1982-01-22|1982-08-22"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C09551","name":"Thacker Marvin & Howard Sellards"},"object":{"type":"operator","id":"P12989","name":"Regina Fuel Company"},"validFrom":"1982-01-22","validTo":"1982-08-22","current":false,"derived":true,"evidenceMineId":"1502750","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1502750|P12989|1982-01-22|C09551|1982-01-22|79976"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P12441","name":"Carwan Coal Company Inc"},"object":{"type":"mine","id":"1502750","name":"No 7-A Mine (D)"},"validFrom":"1982-08-23","validTo":"1983-04-26","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1502750|P12441|1982-08-23|1983-04-26"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C09203","name":"Stiltner Paul E"},"object":{"type":"operator","id":"P12441","name":"Carwan Coal Company Inc"},"validFrom":"1982-08-23","validTo":"1983-04-26","current":false,"derived":true,"evidenceMineId":"1502750","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1502750|P12441|1982-08-23|C09203|1981-09-01|79084"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P00396","name":"Wellmore Coal Corp"},"object":{"type":"mine","id":"1502750","name":"No 7-A Mine (D)"},"validFrom":"1983-04-27","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1502750|P00396|1983-04-27|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C00375","name":"United  Company"},"object":{"type":"operator","id":"P00396","name":"Wellmore Coal Corp"},"validFrom":"1983-04-27","validTo":null,"current":true,"derived":true,"evidenceMineId":"1502750","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1502750|P00396|1983-04-27|C00375|1950-01-01|46496"}}],"coverage":{"historyRecords":5,"edgeCount":15,"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":"1983-06-30","lastDate":"1983-06-30","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":5,"firstDate":"1971-02-01","lastDate":"1983-04-27","metrics":{"recentRows":0,"currentOperatorTenures":1,"completedOperatorTenures":4},"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/1502750/safety","description":"Full-period safety series, top CFR sections and paginated activity. Requires PostgreSQL."},"silica":{"href":"/api/v1/mines/1502750/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":"1502750","dataSource":"postgres","snapshotId":"2026-10-13T11:19:05.459773+00:00","completedAt":"2026-10-13T11:26:59.401Z","sourceCount":20,"totalRows":17906804}}