{"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":"0502500","name":"Anvil Points Mine"},"operator":{"type":"operator","id":"L01268","name":"U S Department Of Energy"},"controller":{"type":"controller","id":"M01776","name":"United States Government"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L00065","name":"Cleveland-Cliffs Iron Company"},"object":{"type":"mine","id":"0502500","name":"Anvil Points Mine"},"validFrom":"1950-01-01","validTo":"1979-09-04","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0502500|L00065|1950-01-01|1979-09-04"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00106","name":"Cleveland-Cliffs Inc"},"object":{"type":"mine","id":"0502500","name":"Anvil Points Mine"},"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":"0502500|M00106|1950-01-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00106","name":"Cleveland-Cliffs Inc"},"object":{"type":"operator","id":"L00065","name":"Cleveland-Cliffs Iron Company"},"validFrom":"1950-01-01","validTo":"1979-09-04","current":false,"derived":true,"evidenceMineId":"0502500","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0502500|L00065|1950-01-01|M00106|1950-01-01|104231"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M01776","name":"United States Government"},"object":{"type":"mine","id":"0502500","name":"Anvil Points Mine"},"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":"0502500|M01776|1950-01-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L03808","name":"Development Engineering Inc"},"object":{"type":"mine","id":"0502500","name":"Anvil Points Mine"},"validFrom":"1979-09-05","validTo":"1982-05-18","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0502500|L03808|1979-09-05|1982-05-18"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M03049","name":"Paraho Development Corp"},"object":{"type":"mine","id":"0502500","name":"Anvil Points Mine"},"validFrom":"1979-09-05","validTo":"1982-05-18","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0502500|M03049|1979-09-05|1982-05-18"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M03049","name":"Paraho Development Corp"},"object":{"type":"operator","id":"L03808","name":"Development Engineering Inc"},"validFrom":"1979-09-05","validTo":"1982-05-18","current":false,"derived":true,"evidenceMineId":"0502500","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0502500|L03808|1979-09-05|M03049|1979-09-05|127769"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L01268","name":"U S Department Of Energy"},"object":{"type":"mine","id":"0502500","name":"Anvil Points Mine"},"validFrom":"1982-05-19","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0502500|L01268|1982-05-19|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M01776","name":"United States Government"},"object":{"type":"operator","id":"L01268","name":"U S Department Of Energy"},"validFrom":"1982-05-19","validTo":null,"current":true,"derived":true,"evidenceMineId":"0502500","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0502500|L01268|1982-05-19|M01776|1950-01-01|120902"}}],"coverage":{"historyRecords":3,"edgeCount":9,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"0502500","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"}}