{"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":"2901375","name":"Mt Taylor Mine"},"operator":{"type":"operator","id":"L12374","name":"Rio Grande Resources Corp"},"controller":{"type":"controller","id":"M09499","name":"Blue James N"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"C00877","name":"Chevron Corporation"},"object":{"type":"mine","id":"2901375","name":"Mt Taylor 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":"2901375|C00877|1950-01-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L01602","name":"Gulf Mineral Resources Company"},"object":{"type":"mine","id":"2901375","name":"Mt Taylor Mine"},"validFrom":"1950-01-01","validTo":"1984-06-14","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2901375|L01602|1950-01-01|1984-06-14"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00317","name":"Gulf Oil Corp"},"object":{"type":"mine","id":"2901375","name":"Mt Taylor 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":"2901375|M00317|1950-01-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00317","name":"Gulf Oil Corp"},"object":{"type":"operator","id":"L01602","name":"Gulf Mineral Resources Company"},"validFrom":"1950-01-01","validTo":"1984-06-14","current":false,"derived":true,"evidenceMineId":"2901375","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2901375|L01602|1950-01-01|M00317|1950-01-01|109363"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L04673","name":"Chevron Resources Company"},"object":{"type":"mine","id":"2901375","name":"Mt Taylor Mine"},"validFrom":"1984-06-15","validTo":"1991-07-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2901375|L04673|1984-06-15|1991-07-31"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C00877","name":"Chevron Corporation"},"object":{"type":"operator","id":"L04673","name":"Chevron Resources Company"},"validFrom":"1984-06-15","validTo":"1991-07-31","current":false,"derived":true,"evidenceMineId":"2901375","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2901375|L04673|1984-06-15|C00877|1950-01-01|50709"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L12374","name":"Rio Grande Resources Corp"},"object":{"type":"mine","id":"2901375","name":"Mt Taylor Mine"},"validFrom":"1991-08-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2901375|L12374|1991-08-01|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M09499","name":"Blue James N"},"object":{"type":"mine","id":"2901375","name":"Mt Taylor Mine"},"validFrom":"1991-08-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2901375|M09499|1991-08-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M09499","name":"Blue James N"},"object":{"type":"operator","id":"L12374","name":"Rio Grande Resources Corp"},"validFrom":"1991-08-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"2901375","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2901375|L12374|1991-08-01|M09499|1991-08-01|146540"}}],"coverage":{"historyRecords":3,"edgeCount":9,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"2901375","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"}}