{"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":"1516417","name":"No 7 Mine"},"operator":{"type":"operator","id":"P20386","name":"C & H Mining"},"controller":{"type":"controller","id":"C13893","name":"Lloyd  Cole; Larry  Hubbard"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"P19702","name":"M D B Contracting Inc"},"object":{"type":"mine","id":"1516417","name":"No 7 Mine"},"validFrom":"1988-07-01","validTo":"1994-01-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1516417|P19702|1988-07-01|1994-01-31"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C13489","name":"Brock John"},"object":{"type":"mine","id":"1516417","name":"No 7 Mine"},"validFrom":"1988-07-01","validTo":"1994-01-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1516417|C13489|1988-07-01|1994-01-31"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C13489","name":"Brock John"},"object":{"type":"operator","id":"P19702","name":"M D B Contracting Inc"},"validFrom":"1988-07-01","validTo":"1994-01-31","current":false,"derived":true,"evidenceMineId":"1516417","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1516417|P19702|1988-07-01|C13489|1988-07-01|90126"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C13893","name":"Larry  Hubbard  et al"},"object":{"type":"mine","id":"1516417","name":"No 7 Mine"},"validFrom":"1989-07-10","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1516417|C13893|1989-07-10|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P20386","name":"C & H Mining"},"object":{"type":"mine","id":"1516417","name":"No 7 Mine"},"validFrom":"1994-02-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1516417|P20386|1994-02-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C13893","name":"Larry  Hubbard  et al"},"object":{"type":"operator","id":"P20386","name":"C & H Mining"},"validFrom":"1994-02-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"1516417","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1516417|P20386|1994-02-01|C13893|1989-07-10|91422"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C13893","name":"Lloyd  Cole  et al"},"object":{"type":"operator","id":"P20386","name":"C & H Mining"},"validFrom":"1994-02-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"1516417","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1516417|P20386|1994-02-01|C13893|1989-07-10|91423"}}],"coverage":{"historyRecords":3,"edgeCount":7,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1516417","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"}}