{"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":"4606539","name":"Tracy No 1"},"operator":{"type":"operator","id":"P21668","name":"Kanawha Scales & Systems"},"controller":{"type":"controller","id":"C14502","name":"Bradbury James"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"C12472","name":"Anker Group Inc"},"object":{"type":"mine","id":"4606539","name":"Tracy No 1"},"validFrom":"1978-09-01","validTo":"2006-01-19","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4606539|C12472|1978-09-01|2006-01-19"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P13442","name":"Juliana Mining Company Inc"},"object":{"type":"mine","id":"4606539","name":"Tracy No 1"},"validFrom":"1982-06-01","validTo":"1991-09-17","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4606539|P13442|1982-06-01|1991-09-17"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C12472","name":"Anker Group Inc"},"object":{"type":"operator","id":"P13442","name":"Juliana Mining Company Inc"},"validFrom":"1982-06-01","validTo":"1991-09-17","current":false,"derived":true,"evidenceMineId":"4606539","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4606539|P13442|1982-06-01|C12472|1978-09-01|86995"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P21668","name":"Kanawha Scales & Systems"},"object":{"type":"mine","id":"4606539","name":"Tracy No 1"},"validFrom":"1991-09-18","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4606539|P21668|1991-09-18|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C14502","name":"Bradbury James"},"object":{"type":"mine","id":"4606539","name":"Tracy No 1"},"validFrom":"1991-09-18","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4606539|C14502|1991-09-18|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C14502","name":"Bradbury James"},"object":{"type":"operator","id":"P21668","name":"Kanawha Scales & Systems"},"validFrom":"1991-09-18","validTo":null,"current":true,"derived":true,"evidenceMineId":"4606539","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4606539|P21668|1991-09-18|C14502|1991-09-18|93033"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0045307","name":"International Coal Group Inc (ICG)"},"object":{"type":"mine","id":"4606539","name":"Tracy No 1"},"validFrom":"2006-01-20","validTo":"2011-06-14","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4606539|0045307|2006-01-20|2011-06-14"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0045307","name":"International Coal Group Inc (ICG)"},"object":{"type":"operator","id":"P13442","name":"Juliana Mining Company Inc"},"validFrom":"2006-01-20","validTo":"1991-09-17","current":false,"derived":true,"evidenceMineId":"4606539","intervalAnomaly":true,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4606539|P13442|1982-06-01|0045307|2006-01-20|5385"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C15561","name":"Arch Resources Inc"},"object":{"type":"mine","id":"4606539","name":"Tracy No 1"},"validFrom":"2011-06-15","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4606539|C15561|2011-06-15|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C15561","name":"Arch Resources Inc"},"object":{"type":"operator","id":"P13442","name":"Juliana Mining Company Inc"},"validFrom":"2011-06-15","validTo":"1991-09-17","current":false,"derived":true,"evidenceMineId":"4606539","intervalAnomaly":true,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4606539|P13442|1982-06-01|C15561|2011-06-15|96186"}}],"coverage":{"historyRecords":4,"edgeCount":10,"intervalAnomalies":2,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4606539","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"}}