{"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":"2900234","name":"Continental Mill #1"},"operator":{"type":"operator","id":"L12995","name":"Cobre Mining Company Inc"},"controller":{"type":"controller","id":"M09939","name":"Metallic Ventures Gold Inc"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L00502","name":"U V Industries Inc"},"object":{"type":"mine","id":"2900234","name":"Continental Mill #1"},"validFrom":"1950-01-01","validTo":"1980-01-17","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2900234|L00502|1950-01-01|1980-01-17"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00134","name":"U V Industries Inc"},"object":{"type":"mine","id":"2900234","name":"Continental Mill #1"},"validFrom":"1950-01-01","validTo":"1992-12-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2900234|M00134|1950-01-01|1992-12-31"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00134","name":"U V Industries Inc"},"object":{"type":"operator","id":"L00502","name":"U V Industries Inc"},"validFrom":"1950-01-01","validTo":"1980-01-17","current":false,"derived":true,"evidenceMineId":"2900234","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2900234|L00502|1950-01-01|M00134|1950-01-01|104953"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L04066","name":"Sharon Steel Corp"},"object":{"type":"mine","id":"2900234","name":"Continental Mill #1"},"validFrom":"1980-01-18","validTo":"1993-04-22","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2900234|L04066|1980-01-18|1993-04-22"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M03260","name":"NVF Company"},"object":{"type":"mine","id":"2900234","name":"Continental Mill #1"},"validFrom":"1980-01-18","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2900234|M03260|1980-01-18|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M03260","name":"NVF Company"},"object":{"type":"operator","id":"L04066","name":"Sharon Steel Corp"},"validFrom":"1980-01-18","validTo":"1993-04-22","current":false,"derived":true,"evidenceMineId":"2900234","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2900234|L04066|1980-01-18|M03260|1980-01-18|128602"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M09939","name":"Metallic Ventures Gold Inc"},"object":{"type":"mine","id":"2900234","name":"Continental Mill #1"},"validFrom":"1993-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2900234|M09939|1993-01-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L12995","name":"Cobre Mining Company Inc"},"object":{"type":"mine","id":"2900234","name":"Continental Mill #1"},"validFrom":"1993-04-23","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2900234|L12995|1993-04-23|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M09939","name":"Metallic Ventures Gold Inc"},"object":{"type":"operator","id":"L12995","name":"Cobre Mining Company Inc"},"validFrom":"1993-04-23","validTo":null,"current":true,"derived":true,"evidenceMineId":"2900234","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2900234|L12995|1993-04-23|M09939|1993-01-01|147932"}}],"coverage":{"historyRecords":3,"edgeCount":9,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"2900234","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"}}