{"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":"4501941","name":"Stilly Pass Pit And Portable Mill"},"operator":{"type":"operator","id":"L02534","name":"Puget Sound Surfacers Inc"},"controller":{"type":"controller","id":"M01467","name":"Michael P  Shaw"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L02206","name":"U S Forest Service"},"object":{"type":"mine","id":"4501941","name":"Stilly Pass Pit And Portable Mill"},"validFrom":"1950-01-01","validTo":"1980-10-20","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4501941|L02206|1950-01-01|1980-10-20"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M01776","name":"United States Government"},"object":{"type":"mine","id":"4501941","name":"Stilly Pass Pit And Portable Mill"},"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":"4501941|M01776|1950-01-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M01776","name":"United States Government"},"object":{"type":"operator","id":"L02206","name":"U S Forest Service"},"validFrom":"1950-01-01","validTo":"1980-10-20","current":false,"derived":true,"evidenceMineId":"4501941","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4501941|L02206|1950-01-01|M01776|1950-01-01|121043"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M01467","name":"Michael P  Shaw"},"object":{"type":"mine","id":"4501941","name":"Stilly Pass Pit And Portable Mill"},"validFrom":"1979-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4501941|M01467|1979-01-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L02534","name":"Puget Sound Surfacers Inc"},"object":{"type":"mine","id":"4501941","name":"Stilly Pass Pit And Portable Mill"},"validFrom":"1980-10-21","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4501941|L02534|1980-10-21|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M01467","name":"Michael P  Shaw"},"object":{"type":"operator","id":"L02534","name":"Puget Sound Surfacers Inc"},"validFrom":"1980-10-21","validTo":null,"current":true,"derived":true,"evidenceMineId":"4501941","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4501941|L02534|1980-10-21|M01467|1979-01-01|118759"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4501941","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"}}