{"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":"0503211","name":"Breezy"},"operator":{"type":"operator","id":"L04227","name":"Urralburu Mining Company"},"controller":{"type":"controller","id":"M03404","name":"Urralburu Ben"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00442","name":"Union Carbide Corp"},"object":{"type":"mine","id":"0503211","name":"Breezy"},"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":"0503211|M00442|1950-01-01|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M03404","name":"Urralburu Ben"},"object":{"type":"mine","id":"0503211","name":"Breezy"},"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":"0503211|M03404|1950-01-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L00522","name":"Union Carbide Corp"},"object":{"type":"mine","id":"0503211","name":"Breezy"},"validFrom":"1978-03-09","validTo":"1988-03-15","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0503211|L00522|1978-03-09|1988-03-15"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00442","name":"Union Carbide Corp"},"object":{"type":"operator","id":"L00522","name":"Union Carbide Corp"},"validFrom":"1978-03-09","validTo":"1988-03-15","current":false,"derived":true,"evidenceMineId":"0503211","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0503211|L00522|1978-03-09|M00442|1950-01-01|110966"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L04227","name":"Urralburu Mining Company"},"object":{"type":"mine","id":"0503211","name":"Breezy"},"validFrom":"1988-03-16","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0503211|L04227|1988-03-16|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M03404","name":"Urralburu Ben"},"object":{"type":"operator","id":"L04227","name":"Urralburu Mining Company"},"validFrom":"1988-03-16","validTo":null,"current":true,"derived":true,"evidenceMineId":"0503211","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0503211|L04227|1988-03-16|M03404|1950-01-01|128969"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"0503211","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"}}