{"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":"1514618","name":"No 2"},"operator":{"type":"operator","id":"P15662","name":"Four B & C Coal Company Inc"},"controller":{"type":"controller","id":"C11211","name":"Coble Robert L"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"P15521","name":"Conakay Resources Inc"},"object":{"type":"mine","id":"1514618","name":"No 2"},"validFrom":"1984-05-01","validTo":"1986-03-03","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1514618|P15521|1984-05-01|1986-03-03"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C08507","name":"Joby  Fields"},"object":{"type":"mine","id":"1514618","name":"No 2"},"validFrom":"1984-05-01","validTo":"1995-05-11","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1514618|C08507|1984-05-01|1995-05-11"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C08507","name":"Joby  Fields"},"object":{"type":"operator","id":"P15521","name":"Conakay Resources Inc"},"validFrom":"1984-05-01","validTo":"1986-03-03","current":false,"derived":true,"evidenceMineId":"1514618","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1514618|P15521|1984-05-01|C08507|1984-05-01|77460"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C11211","name":"Coble Robert L"},"object":{"type":"mine","id":"1514618","name":"No 2"},"validFrom":"1984-07-24","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1514618|C11211|1984-07-24|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P17629","name":"K J W Mining & Construction Inc"},"object":{"type":"mine","id":"1514618","name":"No 2"},"validFrom":"1986-03-04","validTo":"1988-01-05","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1514618|P17629|1986-03-04|1988-01-05"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C12373","name":"Van Hooser Keith & Jerry"},"object":{"type":"mine","id":"1514618","name":"No 2"},"validFrom":"1986-03-04","validTo":"1988-01-05","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1514618|C12373|1986-03-04|1988-01-05"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C12373","name":"Van Hooser Keith & Jerry"},"object":{"type":"operator","id":"P17629","name":"K J W Mining & Construction Inc"},"validFrom":"1986-03-04","validTo":"1988-01-05","current":false,"derived":true,"evidenceMineId":"1514618","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1514618|P17629|1986-03-04|C12373|1986-03-04|86755"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P15662","name":"Four B & C Coal Company Inc"},"object":{"type":"mine","id":"1514618","name":"No 2"},"validFrom":"1988-01-06","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1514618|P15662|1988-01-06|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C11211","name":"Coble Robert L"},"object":{"type":"operator","id":"P15662","name":"Four B & C Coal Company Inc"},"validFrom":"1988-01-06","validTo":null,"current":true,"derived":true,"evidenceMineId":"1514618","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1514618|P15662|1988-01-06|C11211|1984-07-24|84125"}}],"coverage":{"historyRecords":3,"edgeCount":9,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1514618","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"}}