{"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":"1511221","name":"No 3 Surface"},"operator":{"type":"operator","id":"P05712","name":"Shawnee Mining Company"},"controller":{"type":"controller","id":"C00737","name":"Hall Robert Scott"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"C00737","name":"Hall Robert Scott"},"object":{"type":"mine","id":"1511221","name":"No 3 Surface"},"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":"1511221|C00737|1950-01-01|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C02272","name":"Graham John W & L D"},"object":{"type":"mine","id":"1511221","name":"No 3 Surface"},"validFrom":"1977-07-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1511221|C02272|1977-07-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P07209","name":"Ivy Mining Corp"},"object":{"type":"mine","id":"1511221","name":"No 3 Surface"},"validFrom":"1977-11-01","validTo":"1978-09-13","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1511221|P07209|1977-11-01|1978-09-13"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C02272","name":"Graham John W & L D"},"object":{"type":"operator","id":"P07209","name":"Ivy Mining Corp"},"validFrom":"1977-11-01","validTo":"1978-09-13","current":false,"derived":true,"evidenceMineId":"1511221","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1511221|P07209|1977-11-01|C02272|1977-07-01|58010"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P05712","name":"Shawnee Mining Company"},"object":{"type":"mine","id":"1511221","name":"No 3 Surface"},"validFrom":"1978-09-14","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1511221|P05712|1978-09-14|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C00737","name":"Hall Robert Scott"},"object":{"type":"operator","id":"P05712","name":"Shawnee Mining Company"},"validFrom":"1978-09-14","validTo":null,"current":true,"derived":true,"evidenceMineId":"1511221","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1511221|P05712|1978-09-14|C00737|1950-01-01|49688"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1511221","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"}}