{"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":"1515633","name":"Rainbow No 1"},"operator":{"type":"operator","id":"P18924","name":"Rainbow Coal Company Of Va"},"controller":{"type":"controller","id":"C13105","name":"Holland Bobby E"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"P17680","name":"W A W Coal Company Inc"},"object":{"type":"mine","id":"1515633","name":"Rainbow No 1"},"validFrom":"1986-05-01","validTo":"1987-07-05","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1515633|P17680|1986-05-01|1987-07-05"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C12407","name":"Addair Stan"},"object":{"type":"mine","id":"1515633","name":"Rainbow No 1"},"validFrom":"1986-05-01","validTo":"1987-07-05","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1515633|C12407|1986-05-01|1987-07-05"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C12407","name":"Addair Stan"},"object":{"type":"operator","id":"P17680","name":"W A W Coal Company Inc"},"validFrom":"1986-05-01","validTo":"1987-07-05","current":false,"derived":true,"evidenceMineId":"1515633","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1515633|P17680|1986-05-01|C12407|1986-05-01|86814"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P18924","name":"Rainbow Coal Company Of Va"},"object":{"type":"mine","id":"1515633","name":"Rainbow No 1"},"validFrom":"1987-07-06","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1515633|P18924|1987-07-06|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C13105","name":"Holland Bobby E"},"object":{"type":"mine","id":"1515633","name":"Rainbow No 1"},"validFrom":"1987-07-06","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1515633|C13105|1987-07-06|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C13105","name":"Holland Bobby E"},"object":{"type":"operator","id":"P18924","name":"Rainbow Coal Company Of Va"},"validFrom":"1987-07-06","validTo":null,"current":true,"derived":true,"evidenceMineId":"1515633","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1515633|P18924|1987-07-06|C13105|1987-07-06|88616"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1515633","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"}}