{"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":"4405903","name":"No 1"},"operator":{"type":"operator","id":"P17039","name":"Cody Coal Inc"},"controller":{"type":"controller","id":"C01411","name":"Richardson Dowell"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"P13381","name":"Hokie Coal Company Inc"},"object":{"type":"mine","id":"4405903","name":"No 1"},"validFrom":"1982-06-01","validTo":"1983-05-15","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4405903|P13381|1982-06-01|1983-05-15"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C01411","name":"Richardson Dowell"},"object":{"type":"mine","id":"4405903","name":"No 1"},"validFrom":"1982-06-01","validTo":"1984-08-23","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4405903|C01411|1982-06-01|1984-08-23"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C01411","name":"Richardson Dowell"},"object":{"type":"operator","id":"P13381","name":"Hokie Coal Company Inc"},"validFrom":"1982-06-01","validTo":"1983-05-15","current":false,"derived":true,"evidenceMineId":"4405903","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4405903|P13381|1982-06-01|C01411|1982-06-01|53983"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C10424","name":"Altizer Emory R"},"object":{"type":"mine","id":"4405903","name":"No 1"},"validFrom":"1983-05-15","validTo":"1983-09-18","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4405903|C10424|1983-05-15|1983-09-18"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P14364","name":"Emcoal Mining Inc"},"object":{"type":"mine","id":"4405903","name":"No 1"},"validFrom":"1983-05-16","validTo":"1983-09-18","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4405903|P14364|1983-05-16|1983-09-18"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C10424","name":"Altizer Emory R"},"object":{"type":"operator","id":"P14364","name":"Emcoal Mining Inc"},"validFrom":"1983-05-16","validTo":"1983-09-18","current":false,"derived":true,"evidenceMineId":"4405903","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4405903|P14364|1983-05-16|C10424|1983-05-15|81970"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P13381","name":"Hokie Coal Company Inc"},"object":{"type":"mine","id":"4405903","name":"No 1"},"validFrom":"1983-09-19","validTo":"1984-08-23","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4405903|P13381|1983-09-19|1984-08-23"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C01411","name":"Richardson Dowell"},"object":{"type":"operator","id":"P13381","name":"Hokie Coal Company Inc"},"validFrom":"1983-09-19","validTo":"1984-08-23","current":false,"derived":true,"evidenceMineId":"4405903","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4405903|P13381|1983-09-19|C01411|1982-06-01|53984"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P15778","name":"Bar-V Mining Inc"},"object":{"type":"mine","id":"4405903","name":"No 1"},"validFrom":"1984-08-24","validTo":"1985-09-04","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4405903|P15778|1984-08-24|1985-09-04"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C11285","name":"Vandyke James O"},"object":{"type":"mine","id":"4405903","name":"No 1"},"validFrom":"1984-08-24","validTo":"1985-09-04","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4405903|C11285|1984-08-24|1985-09-04"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C11285","name":"Vandyke James O"},"object":{"type":"operator","id":"P15778","name":"Bar-V Mining Inc"},"validFrom":"1984-08-24","validTo":"1985-09-04","current":false,"derived":true,"evidenceMineId":"4405903","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4405903|P15778|1984-08-24|C11285|1984-08-24|84251"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P17039","name":"Cody Coal Inc"},"object":{"type":"mine","id":"4405903","name":"No 1"},"validFrom":"1985-09-05","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4405903|P17039|1985-09-05|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C01411","name":"Richardson Dowell"},"object":{"type":"mine","id":"4405903","name":"No 1"},"validFrom":"1985-09-05","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4405903|C01411|1985-09-05|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C01411","name":"Richardson Dowell"},"object":{"type":"operator","id":"P17039","name":"Cody Coal Inc"},"validFrom":"1985-09-05","validTo":null,"current":true,"derived":true,"evidenceMineId":"4405903","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4405903|P17039|1985-09-05|C01411|1985-09-05|53993"}}],"coverage":{"historyRecords":5,"edgeCount":14,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4405903","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"}}