{"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":"2026-10-17T05:35:58.500035+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":"4606425","name":"Amber #1"},"operator":{"type":"operator","id":"P14840","name":"Amber Coal Inc"},"controller":{"type":"controller","id":"C10722","name":"Mounts Arden"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-17T05:35:58.500035+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"P12673","name":"Northern Amber Coal Company Inc"},"object":{"type":"mine","id":"4606425","name":"Amber #1"},"validFrom":"1981-10-01","validTo":"1983-08-29","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4606425|P12673|1981-10-01|1983-08-29"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C09349","name":"Zeeman John"},"object":{"type":"mine","id":"4606425","name":"Amber #1"},"validFrom":"1981-10-01","validTo":"1983-08-29","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4606425|C09349|1981-10-01|1983-08-29"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C09349","name":"Zeeman John"},"object":{"type":"operator","id":"P12673","name":"Northern Amber Coal Company Inc"},"validFrom":"1981-10-01","validTo":"1983-08-29","current":false,"derived":true,"evidenceMineId":"4606425","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4606425|P12673|1981-10-01|C09349|1981-10-01|79438"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P14840","name":"Amber Coal Inc"},"object":{"type":"mine","id":"4606425","name":"Amber #1"},"validFrom":"1983-08-30","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4606425|P14840|1983-08-30|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C10722","name":"Mounts Arden"},"object":{"type":"mine","id":"4606425","name":"Amber #1"},"validFrom":"1983-08-30","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4606425|C10722|1983-08-30|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C10722","name":"Mounts Arden"},"object":{"type":"operator","id":"P14840","name":"Amber Coal Inc"},"validFrom":"1983-08-30","validTo":null,"current":true,"derived":true,"evidenceMineId":"4606425","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4606425|P14840|1983-08-30|C10722|1983-08-30|82636"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4606425","dataSource":"postgres","snapshotId":"2026-10-17T05:35:58.500035+00:00","completedAt":"2026-10-17T06:17:15.228Z","sourceCount":20,"totalRows":15450873,"relationshipSemantics":"valid time; null validTo means current or open-ended in the source"}}