{"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":"1519526","name":"Spring Branch 1"},"operator":{"type":"operator","id":"0158813","name":"R & S Coal"},"controller":{"type":"controller","id":"0142941","name":"Larry  Hamilton"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"0112265","name":"Centurian of Pikeville, Inc."},"object":{"type":"mine","id":"1519526","name":"Spring Branch 1"},"validFrom":"2010-08-12","validTo":"2018-08-22","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1519526|0112265|2010-08-12|2018-08-22"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0095033","name":"Edward  Justice"},"object":{"type":"mine","id":"1519526","name":"Spring Branch 1"},"validFrom":"2010-08-12","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1519526|0095033|2010-08-12|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0095033","name":"Edward  Justice"},"object":{"type":"operator","id":"0112265","name":"Centurian of Pikeville, Inc."},"validFrom":"2010-08-12","validTo":"2018-08-22","current":false,"derived":true,"evidenceMineId":"1519526","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1519526|0112265|2010-08-12|0095033|2010-08-12|15660"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0158813","name":"R & S Coal"},"object":{"type":"mine","id":"1519526","name":"Spring Branch 1"},"validFrom":"2018-08-23","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1519526|0158813|2018-08-23|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0142941","name":"Larry  Hamilton"},"object":{"type":"mine","id":"1519526","name":"Spring Branch 1"},"validFrom":"2018-08-23","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1519526|0142941|2018-08-23|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0142941","name":"Larry  Hamilton"},"object":{"type":"operator","id":"0158813","name":"R & S Coal"},"validFrom":"2018-08-23","validTo":null,"current":true,"derived":true,"evidenceMineId":"1519526","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1519526|0158813|2018-08-23|0142941|2018-08-23|28969"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1519526","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"}}