{"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":"4604375","name":"No 1 Mine"},"operator":{"type":"operator","id":"P10376","name":"Big Bear Coal Company Inc"},"controller":{"type":"controller","id":"C07915","name":"Hord Paul E"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"C00038","name":"Belco Petroleum Corp"},"object":{"type":"mine","id":"4604375","name":"No 1 Mine"},"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":"4604375|C00038|1950-01-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P01061","name":"L & B Coal Company"},"object":{"type":"mine","id":"4604375","name":"No 1 Mine"},"validFrom":"1974-01-01","validTo":"1974-03-01","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4604375|P01061|1974-01-01|1974-03-01"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C00038","name":"Belco Petroleum Corp"},"object":{"type":"operator","id":"P01061","name":"L & B Coal Company"},"validFrom":"1974-01-01","validTo":"1974-03-01","current":false,"derived":true,"evidenceMineId":"4604375","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4604375|P01061|1974-01-01|C00038|1950-01-01|43799"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P01060","name":"K & V Coal Company"},"object":{"type":"mine","id":"4604375","name":"No 1 Mine"},"validFrom":"1974-03-02","validTo":"1975-06-01","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4604375|P01060|1974-03-02|1975-06-01"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C00921","name":"K & V Coal Company"},"object":{"type":"mine","id":"4604375","name":"No 1 Mine"},"validFrom":"1974-03-02","validTo":"1990-04-16","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4604375|C00921|1974-03-02|1990-04-16"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C00921","name":"K & V Coal Company"},"object":{"type":"operator","id":"P01060","name":"K & V Coal Company"},"validFrom":"1974-03-02","validTo":"1975-06-01","current":false,"derived":true,"evidenceMineId":"4604375","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4604375|P01060|1974-03-02|C00921|1974-03-02|51061"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P03037","name":"H & D Mining Company"},"object":{"type":"mine","id":"4604375","name":"No 1 Mine"},"validFrom":"1975-06-02","validTo":"1975-08-29","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4604375|P03037|1975-06-02|1975-08-29"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C00920","name":"Heatherman C & L E Dempsey"},"object":{"type":"mine","id":"4604375","name":"No 1 Mine"},"validFrom":"1975-06-02","validTo":"1975-08-29","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4604375|C00920|1975-06-02|1975-08-29"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C00920","name":"Heatherman C & L E Dempsey"},"object":{"type":"operator","id":"P03037","name":"H & D Mining Company"},"validFrom":"1975-06-02","validTo":"1975-08-29","current":false,"derived":true,"evidenceMineId":"4604375","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4604375|P03037|1975-06-02|C00920|1975-06-02|51059"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P01062","name":"Triadelphia Coal Company"},"object":{"type":"mine","id":"4604375","name":"No 1 Mine"},"validFrom":"1975-08-30","validTo":"1976-11-21","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4604375|P01062|1975-08-30|1976-11-21"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C00923","name":"Browning Randall"},"object":{"type":"mine","id":"4604375","name":"No 1 Mine"},"validFrom":"1975-08-30","validTo":"1976-11-21","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4604375|C00923|1975-08-30|1976-11-21"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C00923","name":"Browning Randall"},"object":{"type":"operator","id":"P01062","name":"Triadelphia Coal Company"},"validFrom":"1975-08-30","validTo":"1976-11-21","current":false,"derived":true,"evidenceMineId":"4604375","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4604375|P01062|1975-08-30|C00923|1975-08-30|51069"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P03530","name":"Big Bear Coal Company Inc"},"object":{"type":"mine","id":"4604375","name":"No 1 Mine"},"validFrom":"1976-11-22","validTo":"1977-12-11","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4604375|P03530|1976-11-22|1977-12-11"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C01970","name":"Brown Larry M"},"object":{"type":"mine","id":"4604375","name":"No 1 Mine"},"validFrom":"1976-11-22","validTo":"1977-12-11","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4604375|C01970|1976-11-22|1977-12-11"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C01970","name":"Brown Larry M"},"object":{"type":"operator","id":"P03530","name":"Big Bear Coal Company Inc"},"validFrom":"1976-11-22","validTo":"1977-12-11","current":false,"derived":true,"evidenceMineId":"4604375","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4604375|P03530|1976-11-22|C01970|1976-11-22|56963"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P08008","name":"Big Bear Coal Company Inc"},"object":{"type":"mine","id":"4604375","name":"No 1 Mine"},"validFrom":"1977-12-12","validTo":"1979-09-18","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4604375|P08008|1977-12-12|1979-09-18"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C06468","name":"Webb Charles E"},"object":{"type":"mine","id":"4604375","name":"No 1 Mine"},"validFrom":"1977-12-12","validTo":"1979-09-18","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4604375|C06468|1977-12-12|1979-09-18"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C06468","name":"Webb Charles E"},"object":{"type":"operator","id":"P08008","name":"Big Bear Coal Company Inc"},"validFrom":"1977-12-12","validTo":"1979-09-18","current":false,"derived":true,"evidenceMineId":"4604375","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4604375|P08008|1977-12-12|C06468|1977-12-12|71912"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P10376","name":"Big Bear Coal Company Inc"},"object":{"type":"mine","id":"4604375","name":"No 1 Mine"},"validFrom":"1979-09-19","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4604375|P10376|1979-09-19|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C07915","name":"Hord Paul E"},"object":{"type":"mine","id":"4604375","name":"No 1 Mine"},"validFrom":"1979-09-19","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4604375|C07915|1979-09-19|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C07915","name":"Hord Paul E"},"object":{"type":"operator","id":"P10376","name":"Big Bear Coal Company Inc"},"validFrom":"1979-09-19","validTo":null,"current":true,"derived":true,"evidenceMineId":"4604375","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4604375|P10376|1979-09-19|C07915|1979-09-19|75976"}}],"coverage":{"historyRecords":7,"edgeCount":21,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4604375","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"}}