{"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":"0100756","name":"Hilliard No 3"},"operator":{"type":"operator","id":"P01698","name":"Lost Creek Coal Mining Corp"},"controller":{"type":"controller","id":"C01433","name":"Thornton Irma Jean"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"C01432","name":"West Ed"},"object":{"type":"mine","id":"0100756","name":"Hilliard No 3"},"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":"0100756|C01432|1950-01-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P01697","name":"West Coal Company Inc"},"object":{"type":"mine","id":"0100756","name":"Hilliard No 3"},"validFrom":"1972-02-01","validTo":"1973-04-01","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0100756|P01697|1972-02-01|1973-04-01"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C01432","name":"West Ed"},"object":{"type":"operator","id":"P01697","name":"West Coal Company Inc"},"validFrom":"1972-02-01","validTo":"1973-04-01","current":false,"derived":true,"evidenceMineId":"0100756","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0100756|P01697|1972-02-01|C01432|1950-01-01|54061"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P03267","name":"W T W Coal Company"},"object":{"type":"mine","id":"0100756","name":"Hilliard No 3"},"validFrom":"1973-04-02","validTo":"1973-08-14","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0100756|P03267|1973-04-02|1973-08-14"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C02330","name":"W T W Coal Company"},"object":{"type":"mine","id":"0100756","name":"Hilliard No 3"},"validFrom":"1973-04-02","validTo":"1973-08-14","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0100756|C02330|1973-04-02|1973-08-14"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C02330","name":"W T W Coal Company"},"object":{"type":"operator","id":"P03267","name":"W T W Coal Company"},"validFrom":"1973-04-02","validTo":"1973-08-14","current":false,"derived":true,"evidenceMineId":"0100756","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0100756|P03267|1973-04-02|C02330|1973-04-02|58149"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P01698","name":"Lost Creek Coal Mining Corp"},"object":{"type":"mine","id":"0100756","name":"Hilliard No 3"},"validFrom":"1973-08-15","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0100756|P01698|1973-08-15|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C01433","name":"Thornton Irma Jean"},"object":{"type":"mine","id":"0100756","name":"Hilliard No 3"},"validFrom":"1973-08-15","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0100756|C01433|1973-08-15|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C01433","name":"Thornton Irma Jean"},"object":{"type":"operator","id":"P01698","name":"Lost Creek Coal Mining Corp"},"validFrom":"1973-08-15","validTo":null,"current":true,"derived":true,"evidenceMineId":"0100756","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0100756|P01698|1973-08-15|C01433|1973-08-15|54074"}}],"coverage":{"historyRecords":3,"edgeCount":9,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"0100756","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"}}