{"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":"1100158","name":"Oregon Quarry Portable"},"operator":{"type":"operator","id":"L17698","name":"Martin and Company"},"controller":{"type":"controller","id":"M11676","name":"Gerald A  Martin"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L00365","name":"Oregon Stone Quarries Inc"},"object":{"type":"mine","id":"1100158","name":"Oregon Quarry Portable"},"validFrom":"1950-01-01","validTo":"1986-04-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1100158|L00365|1950-01-01|1986-04-30"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00301","name":"Robert W  Seitz"},"object":{"type":"mine","id":"1100158","name":"Oregon Quarry Portable"},"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":"1100158|M00301|1950-01-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00301","name":"Robert W  Seitz"},"object":{"type":"operator","id":"L00365","name":"Oregon Stone Quarries Inc"},"validFrom":"1950-01-01","validTo":"1986-04-30","current":false,"derived":true,"evidenceMineId":"1100158","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1100158|L00365|1950-01-01|M00301|1950-01-01|109199"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L08652","name":"Oregon Stone Inc"},"object":{"type":"mine","id":"1100158","name":"Oregon Quarry Portable"},"validFrom":"1986-05-01","validTo":"2009-04-08","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1100158|L08652|1986-05-01|2009-04-08"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M06854","name":"Scott  Lawrence et al"},"object":{"type":"mine","id":"1100158","name":"Oregon Quarry Portable"},"validFrom":"1986-05-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1100158|M06854|1986-05-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M06854","name":"Scott  Lawrence et al"},"object":{"type":"operator","id":"L08652","name":"Oregon Stone Inc"},"validFrom":"1986-05-01","validTo":"2009-04-08","current":false,"derived":true,"evidenceMineId":"1100158","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1100158|L08652|1986-05-01|M06854|1986-05-01|139508"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M11676","name":"Gerald A  Martin"},"object":{"type":"mine","id":"1100158","name":"Oregon Quarry Portable"},"validFrom":"1997-04-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1100158|M11676|1997-04-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L17698","name":"Martin and Company Excavating"},"object":{"type":"mine","id":"1100158","name":"Oregon Quarry Portable"},"validFrom":"2009-04-09","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1100158|L17698|2009-04-09|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M11676","name":"Gerald A  Martin"},"object":{"type":"operator","id":"L17698","name":"Martin and Company Excavating"},"validFrom":"2009-04-09","validTo":null,"current":true,"derived":true,"evidenceMineId":"1100158","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1100158|L17698|2009-04-09|M11676|1997-04-01|152053"}}],"coverage":{"historyRecords":3,"edgeCount":9,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1100158","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"}}