{"data":{"schemaVersion":"realm.mine-profile.v1","generatedAt":"2026-10-13T11:26:59.401Z","identity":{"mine_id":"4200647","name":"Fire Fly","status":"Abandoned","status_date":"1982-11-22","mine_type":"Underground","coal_metal":"M","commodity":"Uranium Ore","state":"UT","county":"San Juan","nearest_town":"","operator_id":"L04835","operator_name":"M & E Mining Company","controller_id":"M03907","controller_name":"Ellis Virgle E","district":"C09","office":"Lakewood District","employees":0,"latitude":null,"longitude":null},"coverage":{"contributingSources":3,"registeredSources":20,"sourceRows":5},"relationships":{"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":"4200647","name":"Fire Fly"},"operator":{"type":"operator","id":"L04835","name":"M & E Mining Company"},"controller":{"type":"controller","id":"M03907","name":"Ellis Virgle E"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L03488","name":"Kranjac Mining Company"},"object":{"type":"mine","id":"4200647","name":"Fire Fly"},"validFrom":"1950-01-01","validTo":"1979-12-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4200647|L03488|1950-01-01|1979-12-31"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M02795","name":"Kranjac Nicholas J"},"object":{"type":"mine","id":"4200647","name":"Fire Fly"},"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":"4200647|M02795|1950-01-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M02795","name":"Kranjac Nicholas J"},"object":{"type":"operator","id":"L03488","name":"Kranjac Mining Company"},"validFrom":"1950-01-01","validTo":"1979-12-31","current":false,"derived":true,"evidenceMineId":"4200647","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4200647|L03488|1950-01-01|M02795|1950-01-01|126915"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L03809","name":"J J Mining"},"object":{"type":"mine","id":"4200647","name":"Fire Fly"},"validFrom":"1980-01-01","validTo":"1980-11-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4200647|L03809|1980-01-01|1980-11-30"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M03050","name":"Cowan Jerry D & Jerry G Stewart"},"object":{"type":"mine","id":"4200647","name":"Fire Fly"},"validFrom":"1980-01-01","validTo":"1980-11-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4200647|M03050|1980-01-01|1980-11-30"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M03050","name":"Cowan Jerry D & Jerry G Stewart"},"object":{"type":"operator","id":"L03809","name":"J J Mining"},"validFrom":"1980-01-01","validTo":"1980-11-30","current":false,"derived":true,"evidenceMineId":"4200647","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4200647|L03809|1980-01-01|M03050|1980-01-01|127770"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M03907","name":"Ellis Virgle E Et Al"},"object":{"type":"mine","id":"4200647","name":"Fire Fly"},"validFrom":"1980-08-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4200647|M03907|1980-08-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L04835","name":"M & E Mining Company"},"object":{"type":"mine","id":"4200647","name":"Fire Fly"},"validFrom":"1980-12-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4200647|L04835|1980-12-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M03907","name":"Ellis Virgle E Et Al"},"object":{"type":"operator","id":"L04835","name":"M & E Mining Company"},"validFrom":"1980-12-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"4200647","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4200647|L04835|1980-12-01|M03907|1980-08-01|130421"}}],"coverage":{"historyRecords":3,"edgeCount":9,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"sources":[{"id":"msha-addresses","name":"Addresses of Record","domains":["identity","logistics"],"products":["entity resolution","address history","facility geocoding"],"rowCount":1,"firstDate":"1982-11-22","lastDate":"1982-11-22","metrics":{},"periods":{},"recentRecords":[]},{"id":"msha-controller-operator-history","name":"Controller and Operator History","domains":["identity","compliance"],"products":["historical ownership attribution","operator transitions","valid-time joins"],"rowCount":3,"firstDate":"1950-01-01","lastDate":"1980-12-01","metrics":{"recentRows":0,"currentOperatorTenures":1,"completedOperatorTenures":2},"periods":{},"recentRecords":[]},{"id":"msha-mines","name":"Mines","domains":["identity","production","logistics"],"products":["mine identity","status","commodity","location","operator and controller"],"rowCount":1,"firstDate":null,"lastDate":null,"metrics":{},"periods":{},"recentRecords":[]}],"safety":{"href":"/api/v1/mines/4200647/safety","description":"Full-period safety series, top CFR sections and paginated activity. Requires PostgreSQL."},"silica":{"href":"/api/v1/mines/4200647/silica","description":"Dedicated silica records, measurements, sample status and trends. Defaults to the snapshot year; use year=all for history."},"externalContext":{"eia":null,"title30":{"snapshot":{"chapterCount":6,"featuredSectionCount":100,"latestAmendedOn":"2026-08-14","latestIssueDate":"2026-08-14","partCount":206,"sectionCount":5954,"upToDateAsOf":"2026-08-19"},"regulations":[],"fullCorpus":"/data/title30-sections.json"}}},"meta":{"representation":"json","mineId":"4200647","dataSource":"postgres","snapshotId":"2026-10-13T11:19:05.459773+00:00","completedAt":"2026-10-13T11:26:59.401Z","sourceCount":20,"totalRows":17906804}}