{"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":"3901407","name":"UNIT #1"},"operator":{"type":"operator","id":"L14696","name":"Spearfish Excavating Inc"},"controller":{"type":"controller","id":"M11185","name":"Reinert Kenneth"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L13935","name":"Norman Gravel Sales Inc"},"object":{"type":"mine","id":"3901407","name":"UNIT #1"},"validFrom":"1994-12-01","validTo":"1996-04-23","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3901407|L13935|1994-12-01|1996-04-23"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M10650","name":"Norman Billy H"},"object":{"type":"mine","id":"3901407","name":"UNIT #1"},"validFrom":"1994-12-01","validTo":"1996-04-23","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3901407|M10650|1994-12-01|1996-04-23"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M10650","name":"Norman Billy H"},"object":{"type":"operator","id":"L13935","name":"Norman Gravel Sales Inc"},"validFrom":"1994-12-01","validTo":"1996-04-23","current":false,"derived":true,"evidenceMineId":"3901407","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3901407|L13935|1994-12-01|M10650|1994-12-01|149724"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L14696","name":"Spearfish Excavating Inc"},"object":{"type":"mine","id":"3901407","name":"UNIT #1"},"validFrom":"1996-04-24","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3901407|L14696|1996-04-24|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M11185","name":"Reinert Kenneth"},"object":{"type":"mine","id":"3901407","name":"UNIT #1"},"validFrom":"1996-04-24","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3901407|M11185|1996-04-24|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M11185","name":"Reinert Kenneth"},"object":{"type":"operator","id":"L14696","name":"Spearfish Excavating Inc"},"validFrom":"1996-04-24","validTo":null,"current":true,"derived":true,"evidenceMineId":"3901407","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3901407|L14696|1996-04-24|M11185|1996-04-24|150868"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"3901407","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"}}