{"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":"1515592","name":"Mine No 1"},"operator":{"type":"operator","id":"P22361","name":"Alpha Mining Company"},"controller":{"type":"controller","id":"C02474","name":"Barnwell Darrell G"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"P17877","name":"Lynn Camp Mining Inc"},"object":{"type":"mine","id":"1515592","name":"Mine No 1"},"validFrom":"1986-04-01","validTo":"1988-10-02","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1515592|P17877|1986-04-01|1988-10-02"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C12522","name":"Smith Larry A"},"object":{"type":"mine","id":"1515592","name":"Mine No 1"},"validFrom":"1986-04-01","validTo":"1988-10-02","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1515592|C12522|1986-04-01|1988-10-02"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C12522","name":"Smith Larry A"},"object":{"type":"operator","id":"P17877","name":"Lynn Camp Mining Inc"},"validFrom":"1986-04-01","validTo":"1988-10-02","current":false,"derived":true,"evidenceMineId":"1515592","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1515592|P17877|1986-04-01|C12522|1986-04-01|87300"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P19842","name":"Dns Coal Company Inc"},"object":{"type":"mine","id":"1515592","name":"Mine No 1"},"validFrom":"1988-10-03","validTo":"1989-05-29","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1515592|P19842|1988-10-03|1989-05-29"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C13598","name":"Hoskins Numan"},"object":{"type":"mine","id":"1515592","name":"Mine No 1"},"validFrom":"1988-10-03","validTo":"1990-04-22","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1515592|C13598|1988-10-03|1990-04-22"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C13598","name":"Hoskins Numan"},"object":{"type":"operator","id":"P19842","name":"Dns Coal Company Inc"},"validFrom":"1988-10-03","validTo":"1989-05-29","current":false,"derived":true,"evidenceMineId":"1515592","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1515592|P19842|1988-10-03|C13598|1988-10-03|90606"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P22361","name":"Alpha Mining Company"},"object":{"type":"mine","id":"1515592","name":"Mine No 1"},"validFrom":"1989-05-30","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1515592|P22361|1989-05-30|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C02474","name":"Barnwell Darrell G"},"object":{"type":"mine","id":"1515592","name":"Mine No 1"},"validFrom":"1989-05-30","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1515592|C02474|1989-05-30|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C02474","name":"Barnwell Darrell G"},"object":{"type":"operator","id":"P22361","name":"Alpha Mining Company"},"validFrom":"1989-05-30","validTo":null,"current":true,"derived":true,"evidenceMineId":"1515592","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1515592|P22361|1989-05-30|C02474|1989-05-30|58604"}}],"coverage":{"historyRecords":3,"edgeCount":9,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1515592","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"}}