{"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":"1508800","name":"Prep Plant #1"},"operator":{"type":"operator","id":"P12208","name":"Andy Frost Coal Company Inc"},"controller":{"type":"controller","id":"C00587","name":"Frost Andrew"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"P05247","name":"Louisville Minerals Inc"},"object":{"type":"mine","id":"1508800","name":"Prep Plant #1"},"validFrom":"1975-08-01","validTo":"1977-06-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1508800|P05247|1975-08-01|1977-06-30"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C04336","name":"White J L"},"object":{"type":"mine","id":"1508800","name":"Prep Plant #1"},"validFrom":"1975-08-01","validTo":"1977-06-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1508800|C04336|1975-08-01|1977-06-30"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C04336","name":"White J L"},"object":{"type":"operator","id":"P05247","name":"Louisville Minerals Inc"},"validFrom":"1975-08-01","validTo":"1977-06-30","current":false,"derived":true,"evidenceMineId":"1508800","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1508800|P05247|1975-08-01|C04336|1975-08-01|65400"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P14242","name":"Pat White Fuels Inc"},"object":{"type":"mine","id":"1508800","name":"Prep Plant #1"},"validFrom":"1977-07-01","validTo":"1986-08-25","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1508800|P14242|1977-07-01|1986-08-25"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C04059","name":"White Pascual R"},"object":{"type":"mine","id":"1508800","name":"Prep Plant #1"},"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":"1508800|C04059|1977-07-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C04059","name":"White Pascual R"},"object":{"type":"operator","id":"P14242","name":"Pat White Fuels Inc"},"validFrom":"1977-07-01","validTo":"1986-08-25","current":false,"derived":true,"evidenceMineId":"1508800","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1508800|P14242|1977-07-01|C04059|1977-07-01|64662"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C00587","name":"Frost Andrew"},"object":{"type":"mine","id":"1508800","name":"Prep Plant #1"},"validFrom":"1981-04-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1508800|C00587|1981-04-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P12208","name":"Andy Frost Coal Company Inc"},"object":{"type":"mine","id":"1508800","name":"Prep Plant #1"},"validFrom":"1986-08-26","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1508800|P12208|1986-08-26|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C00587","name":"Frost Andrew"},"object":{"type":"operator","id":"P12208","name":"Andy Frost Coal Company Inc"},"validFrom":"1986-08-26","validTo":null,"current":true,"derived":true,"evidenceMineId":"1508800","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1508800|P12208|1986-08-26|C00587|1981-04-01|48233"}}],"coverage":{"historyRecords":3,"edgeCount":9,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1508800","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"}}