{"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":"4401261","name":"Central Prep Plant"},"operator":{"type":"operator","id":"P03287","name":"Raven Anchor Smokeless Coal Company"},"controller":{"type":"controller","id":"C05565","name":"Gulf + Western Industries Inc & Raven Smokeless Co"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"P07592","name":"Raven Smokeless Coal Company"},"object":{"type":"mine","id":"4401261","name":"Central Prep Plant"},"validFrom":"1950-01-01","validTo":"1974-11-07","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4401261|P07592|1950-01-01|1974-11-07"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C06217","name":"Lipps Robert"},"object":{"type":"mine","id":"4401261","name":"Central Prep Plant"},"validFrom":"1950-01-01","validTo":"1975-03-11","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4401261|C06217|1950-01-01|1975-03-11"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C06217","name":"Lipps Robert"},"object":{"type":"operator","id":"P07592","name":"Raven Smokeless Coal Company"},"validFrom":"1950-01-01","validTo":"1974-11-07","current":false,"derived":true,"evidenceMineId":"4401261","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4401261|P07592|1950-01-01|C06217|1950-01-01|71203"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P01603","name":"Raven Smokeless Coal Company Inc"},"object":{"type":"mine","id":"4401261","name":"Central Prep Plant"},"validFrom":"1974-11-08","validTo":"1977-06-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4401261|P01603|1974-11-08|1977-06-30"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C01376","name":"Samuels John S Iii"},"object":{"type":"mine","id":"4401261","name":"Central Prep Plant"},"validFrom":"1974-11-08","validTo":"1977-06-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4401261|C01376|1974-11-08|1977-06-30"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C01376","name":"Samuels John S Iii"},"object":{"type":"operator","id":"P01603","name":"Raven Smokeless Coal Company Inc"},"validFrom":"1974-11-08","validTo":"1977-06-30","current":false,"derived":true,"evidenceMineId":"4401261","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4401261|P01603|1974-11-08|C01376|1974-11-08|53820"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C05565","name":"Gulf + Western Industries Inc & Raven Smokeless Co"},"object":{"type":"mine","id":"4401261","name":"Central Prep Plant"},"validFrom":"1976-09-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4401261|C05565|1976-09-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P03287","name":"Raven Anchor Smokeless Coal Company"},"object":{"type":"mine","id":"4401261","name":"Central Prep Plant"},"validFrom":"1977-07-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4401261|P03287|1977-07-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C05565","name":"Gulf + Western Industries Inc & Raven Smokeless Co"},"object":{"type":"operator","id":"P03287","name":"Raven Anchor Smokeless Coal Company"},"validFrom":"1977-07-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"4401261","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4401261|P03287|1977-07-01|C05565|1976-09-01|69198"}}],"coverage":{"historyRecords":3,"edgeCount":9,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4401261","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"}}