{"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":"1509839","name":"No6 Mine"},"operator":{"type":"operator","id":"P03505","name":"Dry Lake Coal Company Inc"},"controller":{"type":"controller","id":"C02890","name":"Jackson Roy Dan"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"C02890","name":"Jackson Roy Dan"},"object":{"type":"mine","id":"1509839","name":"No6 Mine"},"validFrom":"1950-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1509839|C02890|1950-01-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P03505","name":"Dry Lake Coal Company Inc"},"object":{"type":"mine","id":"1509839","name":"No6 Mine"},"validFrom":"1976-07-23","validTo":"1978-03-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1509839|P03505|1976-07-23|1978-03-31"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C02890","name":"Jackson Roy Dan"},"object":{"type":"operator","id":"P03505","name":"Dry Lake Coal Company Inc"},"validFrom":"1976-07-23","validTo":"1978-03-31","current":false,"derived":true,"evidenceMineId":"1509839","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1509839|P03505|1976-07-23|C02890|1950-01-01|61122"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P08105","name":"Dry Lake Coal Company Inc"},"object":{"type":"mine","id":"1509839","name":"No6 Mine"},"validFrom":"1978-04-01","validTo":"1980-03-05","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1509839|P08105|1978-04-01|1980-03-05"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C03537","name":"Turner Charles & Bobby Joe Hensley"},"object":{"type":"mine","id":"1509839","name":"No6 Mine"},"validFrom":"1978-04-01","validTo":"1980-03-05","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1509839|C03537|1978-04-01|1980-03-05"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C03537","name":"Turner Charles & Bobby Joe Hensley"},"object":{"type":"operator","id":"P08105","name":"Dry Lake Coal Company Inc"},"validFrom":"1978-04-01","validTo":"1980-03-05","current":false,"derived":true,"evidenceMineId":"1509839","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1509839|P08105|1978-04-01|C03537|1978-04-01|63180"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P03505","name":"Dry Lake Coal Company Inc"},"object":{"type":"mine","id":"1509839","name":"No6 Mine"},"validFrom":"1980-03-06","validTo":"1981-08-25","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1509839|P03505|1980-03-06|1981-08-25"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C02890","name":"Jackson Roy Dan"},"object":{"type":"operator","id":"P03505","name":"Dry Lake Coal Company Inc"},"validFrom":"1980-03-06","validTo":"1981-08-25","current":false,"derived":true,"evidenceMineId":"1509839","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1509839|P03505|1980-03-06|C02890|1950-01-01|61123"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C08568","name":"Vandagriff Glen Doil"},"object":{"type":"mine","id":"1509839","name":"No6 Mine"},"validFrom":"1981-02-24","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1509839|C08568|1981-02-24|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P11416","name":"G V Coal Company"},"object":{"type":"mine","id":"1509839","name":"No6 Mine"},"validFrom":"1981-08-26","validTo":"1981-12-03","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1509839|P11416|1981-08-26|1981-12-03"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C08568","name":"Vandagriff Glen Doil"},"object":{"type":"operator","id":"P11416","name":"G V Coal Company"},"validFrom":"1981-08-26","validTo":"1981-12-03","current":false,"derived":true,"evidenceMineId":"1509839","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1509839|P11416|1981-08-26|C08568|1981-02-24|77641"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P03505","name":"Dry Lake Coal Company Inc"},"object":{"type":"mine","id":"1509839","name":"No6 Mine"},"validFrom":"1981-12-04","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1509839|P03505|1981-12-04|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C02890","name":"Jackson Roy Dan"},"object":{"type":"operator","id":"P03505","name":"Dry Lake Coal Company Inc"},"validFrom":"1981-12-04","validTo":null,"current":true,"derived":true,"evidenceMineId":"1509839","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1509839|P03505|1981-12-04|C02890|1950-01-01|61124"}}],"coverage":{"historyRecords":5,"edgeCount":13,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1509839","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"}}