{"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":"1512781","name":"No 1 Mine"},"operator":{"type":"operator","id":"P15294","name":"Quadrex Inc"},"controller":{"type":"controller","id":"C06391","name":"Hall Jay"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"P12083","name":"O K Coal Company"},"object":{"type":"mine","id":"1512781","name":"No 1 Mine"},"validFrom":"1981-03-01","validTo":"1981-10-22","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1512781|P12083|1981-03-01|1981-10-22"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C08967","name":"Slater Gary Et Al"},"object":{"type":"mine","id":"1512781","name":"No 1 Mine"},"validFrom":"1981-03-01","validTo":"1981-10-22","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1512781|C08967|1981-03-01|1981-10-22"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C08967","name":"Slater Gary Et Al"},"object":{"type":"operator","id":"P12083","name":"O K Coal Company"},"validFrom":"1981-03-01","validTo":"1981-10-22","current":false,"derived":true,"evidenceMineId":"1512781","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1512781|P12083|1981-03-01|C08967|1981-03-01|78532"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P12609","name":"Quadrex Inc"},"object":{"type":"mine","id":"1512781","name":"No 1 Mine"},"validFrom":"1981-10-23","validTo":"1984-03-18","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1512781|P12609|1981-10-23|1984-03-18"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C03921","name":"Blackburn Lawyer"},"object":{"type":"mine","id":"1512781","name":"No 1 Mine"},"validFrom":"1981-10-23","validTo":"1984-03-18","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1512781|C03921|1981-10-23|1984-03-18"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C03921","name":"Blackburn Lawyer"},"object":{"type":"operator","id":"P12609","name":"Quadrex Inc"},"validFrom":"1981-10-23","validTo":"1984-03-18","current":false,"derived":true,"evidenceMineId":"1512781","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1512781|P12609|1981-10-23|C03921|1981-10-23|64236"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P15294","name":"Quadrex Inc"},"object":{"type":"mine","id":"1512781","name":"No 1 Mine"},"validFrom":"1984-03-19","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1512781|P15294|1984-03-19|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C06391","name":"Hall Jay Et Al"},"object":{"type":"mine","id":"1512781","name":"No 1 Mine"},"validFrom":"1984-03-19","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1512781|C06391|1984-03-19|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C06391","name":"Hall Jay Et Al"},"object":{"type":"operator","id":"P15294","name":"Quadrex Inc"},"validFrom":"1984-03-19","validTo":null,"current":true,"derived":true,"evidenceMineId":"1512781","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1512781|P15294|1984-03-19|C06391|1984-03-19|71733"}}],"coverage":{"historyRecords":3,"edgeCount":9,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1512781","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"}}