{"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":"1504314","name":"#1 Strip"},"operator":{"type":"operator","id":"P01105","name":"Straight Creek Mining Company"},"controller":{"type":"controller","id":"C06148","name":"Cyprus Amax Minerals Company"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"P01104","name":"Laurel Mining Company Inc"},"object":{"type":"mine","id":"1504314","name":"#1 Strip"},"validFrom":"1950-01-01","validTo":"1975-06-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1504314|P01104|1950-01-01|1975-06-30"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C00934","name":"Laird T  Orr Jr."},"object":{"type":"mine","id":"1504314","name":"#1 Strip"},"validFrom":"1950-01-01","validTo":"1975-06-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1504314|C00934|1950-01-01|1975-06-30"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C00934","name":"Laird T  Orr Jr."},"object":{"type":"operator","id":"P01104","name":"Laurel Mining Company Inc"},"validFrom":"1950-01-01","validTo":"1975-06-30","current":false,"derived":true,"evidenceMineId":"1504314","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1504314|P01104|1950-01-01|C00934|1950-01-01|51112"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P16037","name":"Straight Creek Mining Company"},"object":{"type":"mine","id":"1504314","name":"#1 Strip"},"validFrom":"1975-07-01","validTo":"1981-09-14","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1504314|P16037|1975-07-01|1981-09-14"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C11444","name":"Mountain Coals Inc"},"object":{"type":"mine","id":"1504314","name":"#1 Strip"},"validFrom":"1975-07-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1504314|C11444|1975-07-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C11444","name":"Mountain Coals Inc"},"object":{"type":"operator","id":"P16037","name":"Straight Creek Mining Company"},"validFrom":"1975-07-01","validTo":"1981-09-14","current":false,"derived":true,"evidenceMineId":"1504314","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1504314|P16037|1975-07-01|C11444|1975-07-01|84620"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P01105","name":"Straight Creek Mining Company"},"object":{"type":"mine","id":"1504314","name":"#1 Strip"},"validFrom":"1981-09-15","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1504314|P01105|1981-09-15|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C06148","name":"Cyprus Amax Minerals Company"},"object":{"type":"mine","id":"1504314","name":"#1 Strip"},"validFrom":"1981-09-15","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1504314|C06148|1981-09-15|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C06148","name":"Cyprus Amax Minerals Company"},"object":{"type":"operator","id":"P01105","name":"Straight Creek Mining Company"},"validFrom":"1981-09-15","validTo":null,"current":true,"derived":true,"evidenceMineId":"1504314","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1504314|P01105|1981-09-15|C06148|1981-09-15|70957"}}],"coverage":{"historyRecords":3,"edgeCount":9,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1504314","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"}}