{"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":"4502627","name":"Cmi Portable Plant"},"operator":{"type":"operator","id":"L07985","name":"Cascade Pumice Inc"},"controller":{"type":"controller","id":"M01125","name":"Harbor Resources"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M01704","name":"Graystone Corp"},"object":{"type":"mine","id":"4502627","name":"Cmi Portable Plant"},"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":"4502627|M01704|1950-01-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L03061","name":"Graystone Of Olympia"},"object":{"type":"mine","id":"4502627","name":"Cmi Portable Plant"},"validFrom":"1979-01-01","validTo":"1986-01-29","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4502627|L03061|1979-01-01|1986-01-29"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M01704","name":"Graystone Corp"},"object":{"type":"operator","id":"L03061","name":"Graystone Of Olympia"},"validFrom":"1979-01-01","validTo":"1986-01-29","current":false,"derived":true,"evidenceMineId":"4502627","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4502627|L03061|1979-01-01|M01704|1950-01-01|120448"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M01125","name":"Harbor Resources"},"object":{"type":"mine","id":"4502627","name":"Cmi Portable Plant"},"validFrom":"1985-05-15","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4502627|M01125|1985-05-15|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L07985","name":"Cascade Pumice Inc"},"object":{"type":"mine","id":"4502627","name":"Cmi Portable Plant"},"validFrom":"1986-01-30","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4502627|L07985|1986-01-30|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M01125","name":"Harbor Resources"},"object":{"type":"operator","id":"L07985","name":"Cascade Pumice Inc"},"validFrom":"1986-01-30","validTo":null,"current":true,"derived":true,"evidenceMineId":"4502627","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4502627|L07985|1986-01-30|M01125|1985-05-15|116926"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4502627","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"}}