{"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":"2103105","name":"Screening Plant"},"operator":{"type":"operator","id":"L14143","name":"Isak Hansen & Sons Inc"},"controller":{"type":"controller","id":"0041259","name":"Thomas W  Dwyer"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L14143","name":"Isak Hansen & Sons Inc"},"object":{"type":"mine","id":"2103105","name":"Screening Plant"},"validFrom":"1995-06-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2103105|L14143|1995-06-01|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M10809","name":"Hansen Irving R"},"object":{"type":"mine","id":"2103105","name":"Screening Plant"},"validFrom":"1995-06-01","validTo":"2000-11-29","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2103105|M10809|1995-06-01|2000-11-29"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M10809","name":"Hansen Irving R"},"object":{"type":"operator","id":"L14143","name":"Isak Hansen & Sons Inc"},"validFrom":"1995-06-01","validTo":"2000-11-29","current":false,"derived":true,"evidenceMineId":"2103105","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2103105|L14143|1995-06-01|M10809|1995-06-01|150044"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0041259","name":"Thomas W  Dwyer"},"object":{"type":"mine","id":"2103105","name":"Screening Plant"},"validFrom":"2000-11-30","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2103105|0041259|2000-11-30|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0041259","name":"Thomas W  Dwyer"},"object":{"type":"operator","id":"L14143","name":"Isak Hansen & Sons Inc"},"validFrom":"2000-11-30","validTo":null,"current":true,"derived":true,"evidenceMineId":"2103105","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2103105|L14143|1995-06-01|0041259|2000-11-30|2400"}}],"coverage":{"historyRecords":2,"edgeCount":5,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"2103105","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"}}