{"data":{"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":"1518721","name":"Mine #23"},"operator":{"type":"operator","id":"0150473","name":"McCoy Elkhorn Coal Co."},"controller":{"type":"controller","id":"0150901","name":"American Resources Corporation"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"C13562","name":"James River Coal Company"},"object":{"type":"mine","id":"1518721","name":"Mine #23"},"validFrom":"1988-09-28","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1518721|C13562|1988-09-28|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P19831","name":"McCoy Elkhorn Coal Corp."},"object":{"type":"mine","id":"1518721","name":"Mine #23"},"validFrom":"2004-02-19","validTo":"2014-09-05","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1518721|P19831|2004-02-19|2014-09-05"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C13562","name":"James River Coal Company"},"object":{"type":"operator","id":"P19831","name":"McCoy Elkhorn Coal Corp."},"validFrom":"2004-02-19","validTo":"2014-09-05","current":false,"derived":true,"evidenceMineId":"1518721","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1518721|P19831|2004-02-19|C13562|1988-09-28|90344"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0135133","name":"McCoy Elkhorn Coal Co."},"object":{"type":"mine","id":"1518721","name":"Mine #23"},"validFrom":"2014-09-06","validTo":"2016-02-16","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1518721|0135133|2014-09-06|2016-02-16"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0115041","name":"Opes Resources Inc"},"object":{"type":"mine","id":"1518721","name":"Mine #23"},"validFrom":"2014-09-06","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1518721|0115041|2014-09-06|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0115041","name":"Opes Resources Inc"},"object":{"type":"operator","id":"0135133","name":"McCoy Elkhorn Coal Co."},"validFrom":"2014-09-06","validTo":"2016-02-16","current":false,"derived":true,"evidenceMineId":"1518721","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1518721|0135133|2014-09-06|0115041|2014-09-06|21645"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0150473","name":"McCoy Elkhorn Coal Co."},"object":{"type":"mine","id":"1518721","name":"Mine #23"},"validFrom":"2016-02-17","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1518721|0150473|2016-02-17|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0111701","name":"Quest Energy Corporation"},"object":{"type":"mine","id":"1518721","name":"Mine #23"},"validFrom":"2016-02-17","validTo":"2019-10-08","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1518721|0111701|2016-02-17|2019-10-08"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0111701","name":"Quest Energy Corporation"},"object":{"type":"operator","id":"0150473","name":"McCoy Elkhorn Coal Co."},"validFrom":"2016-02-17","validTo":"2019-10-08","current":false,"derived":true,"evidenceMineId":"1518721","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1518721|0150473|2016-02-17|0111701|2016-02-17|20546"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0150901","name":"American Resources Corporation"},"object":{"type":"mine","id":"1518721","name":"Mine #23"},"validFrom":"2019-10-09","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1518721|0150901|2019-10-09|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0150901","name":"American Resources Corporation"},"object":{"type":"operator","id":"0150473","name":"McCoy Elkhorn Coal Co."},"validFrom":"2019-10-09","validTo":null,"current":true,"derived":true,"evidenceMineId":"1518721","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1518721|0150473|2016-02-17|0150901|2019-10-09|31161"}}],"coverage":{"historyRecords":4,"edgeCount":11,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1518721","dataSource":"postgres","snapshotId":"2026-10-13T11:19:05.459773+00:00","completedAt":"2026-10-13T11:26:59.401Z","sourceCount":20,"totalRows":17906804,"relationshipSemantics":"valid time; null validTo means current or open-ended in the source"}}