{"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":"4002868","name":"Mine #8"},"operator":{"type":"operator","id":"P16774","name":"American Standard Coal Sales Inc"},"controller":{"type":"controller","id":"C10255","name":"Reeves Terry C"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"C00744","name":"Harris Johnny"},"object":{"type":"mine","id":"4002868","name":"Mine #8"},"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":"4002868|C00744|1950-01-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P00869","name":"H & W Coal Company"},"object":{"type":"mine","id":"4002868","name":"Mine #8"},"validFrom":"1984-12-01","validTo":"1985-05-05","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4002868|P00869|1984-12-01|1985-05-05"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C00744","name":"Harris Johnny"},"object":{"type":"operator","id":"P00869","name":"H & W Coal Company"},"validFrom":"1984-12-01","validTo":"1985-05-05","current":false,"derived":true,"evidenceMineId":"4002868","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4002868|P00869|1984-12-01|C00744|1950-01-01|49730"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P16760","name":"R & J Coal Company"},"object":{"type":"mine","id":"4002868","name":"Mine #8"},"validFrom":"1985-05-06","validTo":"1985-06-18","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4002868|P16760|1985-05-06|1985-06-18"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C11874","name":"Phillips Rickey"},"object":{"type":"mine","id":"4002868","name":"Mine #8"},"validFrom":"1985-05-06","validTo":"1985-06-18","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4002868|C11874|1985-05-06|1985-06-18"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C11874","name":"Phillips Rickey"},"object":{"type":"operator","id":"P16760","name":"R & J Coal Company"},"validFrom":"1985-05-06","validTo":"1985-06-18","current":false,"derived":true,"evidenceMineId":"4002868","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4002868|P16760|1985-05-06|C11874|1985-05-06|85601"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P16774","name":"American Standard Coal Sales Inc"},"object":{"type":"mine","id":"4002868","name":"Mine #8"},"validFrom":"1985-06-19","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4002868|P16774|1985-06-19|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C10255","name":"Reeves Terry C"},"object":{"type":"mine","id":"4002868","name":"Mine #8"},"validFrom":"1985-06-19","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4002868|C10255|1985-06-19|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C10255","name":"Reeves Terry C"},"object":{"type":"operator","id":"P16774","name":"American Standard Coal Sales Inc"},"validFrom":"1985-06-19","validTo":null,"current":true,"derived":true,"evidenceMineId":"4002868","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4002868|P16774|1985-06-19|C10255|1985-06-19|81573"}}],"coverage":{"historyRecords":3,"edgeCount":9,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4002868","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"}}