{"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":"4501589","name":"VALLEY READY MIX PIT"},"operator":{"type":"operator","id":"L11447","name":"Valley Ready Mix Inc"},"controller":{"type":"controller","id":"M08852","name":"Krieg Darlyne"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L01881","name":"Valley Ready Mix Concrete Company"},"object":{"type":"mine","id":"4501589","name":"VALLEY READY MIX PIT"},"validFrom":"1950-01-01","validTo":"1989-11-24","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4501589|L01881|1950-01-01|1989-11-24"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M01272","name":"Martin  Drollinger  et al"},"object":{"type":"mine","id":"4501589","name":"VALLEY READY MIX PIT"},"validFrom":"1950-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4501589|M01272|1950-01-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M01272","name":"Martin  Drollinger  et al"},"object":{"type":"operator","id":"L01881","name":"Valley Ready Mix Concrete Company"},"validFrom":"1950-01-01","validTo":"1989-11-24","current":false,"derived":true,"evidenceMineId":"4501589","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4501589|L01881|1950-01-01|M01272|1950-01-01|117726"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M01272","name":"William  Douglas  et al"},"object":{"type":"operator","id":"L01881","name":"Valley Ready Mix Concrete Company"},"validFrom":"1950-01-01","validTo":"1989-11-24","current":false,"derived":true,"evidenceMineId":"4501589","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4501589|L01881|1950-01-01|M01272|1950-01-01|117727"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L11447","name":"Valley Ready Mix Inc"},"object":{"type":"mine","id":"4501589","name":"VALLEY READY MIX PIT"},"validFrom":"1989-11-25","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4501589|L11447|1989-11-25|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M08852","name":"Krieg Darlyne"},"object":{"type":"mine","id":"4501589","name":"VALLEY READY MIX PIT"},"validFrom":"1989-11-25","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4501589|M08852|1989-11-25|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M08852","name":"Krieg Darlyne"},"object":{"type":"operator","id":"L11447","name":"Valley Ready Mix Inc"},"validFrom":"1989-11-25","validTo":null,"current":true,"derived":true,"evidenceMineId":"4501589","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4501589|L11447|1989-11-25|M08852|1989-11-25|144223"}}],"coverage":{"historyRecords":3,"edgeCount":7,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4501589","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"}}