{"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":"4607947","name":"No 3 Strip (3)"},"operator":{"type":"operator","id":"P22649","name":"Edwards Holding Inc"},"controller":{"type":"controller","id":"C14996","name":"Walls Melisa"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"P21135","name":"Charclif Mining Corp"},"object":{"type":"mine","id":"4607947","name":"No 3 Strip (3)"},"validFrom":"1990-09-01","validTo":"1995-01-04","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4607947|P21135|1990-09-01|1995-01-04"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C11363","name":"Clifton J W"},"object":{"type":"mine","id":"4607947","name":"No 3 Strip (3)"},"validFrom":"1990-09-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4607947|C11363|1990-09-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C11363","name":"Clifton J W"},"object":{"type":"operator","id":"P21135","name":"Charclif Mining Corp"},"validFrom":"1990-09-01","validTo":"1995-01-04","current":false,"derived":true,"evidenceMineId":"4607947","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4607947|P21135|1990-09-01|C11363|1990-09-01|84439"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C14996","name":"Walls Melisa"},"object":{"type":"mine","id":"4607947","name":"No 3 Strip (3)"},"validFrom":"1994-01-31","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4607947|C14996|1994-01-31|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P22649","name":"Edwards Holding Inc"},"object":{"type":"mine","id":"4607947","name":"No 3 Strip (3)"},"validFrom":"1995-01-05","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4607947|P22649|1995-01-05|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C14996","name":"Walls Melisa"},"object":{"type":"operator","id":"P22649","name":"Edwards Holding Inc"},"validFrom":"1995-01-05","validTo":null,"current":true,"derived":true,"evidenceMineId":"4607947","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4607947|P22649|1995-01-05|C14996|1994-01-31|94416"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4607947","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"}}