{"data":{"schemaVersion":"realm.mine-profile.v1","generatedAt":"2026-10-13T11:26:59.401Z","identity":{"mine_id":"4200100","name":"Horse Canyon Mine","status":"Abandoned and Sealed","status_date":"1993-06-15","mine_type":"Underground","coal_metal":"C","commodity":"Coal (Bituminous)","state":"UT","county":"Emery","nearest_town":"480 E 6400 S","operator_id":"P24505","operator_name":"Utah American Energy Inc","controller_id":"0157801","controller_name":"ACNR Holdings, Inc","district":"C09","office":"Price UT Field Office","employees":0,"latitude":39.7703,"longitude":-110.579},"coverage":{"contributingSources":3,"registeredSources":20,"sourceRows":8},"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":"4200100","name":"Horse Canyon Mine"},"operator":{"type":"operator","id":"P24505","name":"Utah American Energy Inc"},"controller":{"type":"controller","id":"0157801","name":"ACNR Holdings, Inc"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"C00955","name":"Kaiser Steel Corp"},"object":{"type":"mine","id":"4200100","name":"Horse Canyon 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":"4200100|C00955|1950-01-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P11912","name":"United States Steel Mining Company Inc"},"object":{"type":"mine","id":"4200100","name":"Horse Canyon Mine"},"validFrom":"1950-01-01","validTo":"1984-12-10","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4200100|P11912|1950-01-01|1984-12-10"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C01590","name":"Usx Corp"},"object":{"type":"mine","id":"4200100","name":"Horse Canyon 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":"4200100|C01590|1950-01-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C01590","name":"Usx Corp"},"object":{"type":"operator","id":"P11912","name":"United States Steel Mining Company Inc"},"validFrom":"1950-01-01","validTo":"1984-12-10","current":false,"derived":true,"evidenceMineId":"4200100","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4200100|P11912|1950-01-01|C01590|1950-01-01|55110"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P16663","name":"Kaiser Coal Corp"},"object":{"type":"mine","id":"4200100","name":"Horse Canyon Mine"},"validFrom":"1984-12-11","validTo":"1992-08-23","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4200100|P16663|1984-12-11|1992-08-23"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C00955","name":"Kaiser Steel Corp"},"object":{"type":"operator","id":"P16663","name":"Kaiser Coal Corp"},"validFrom":"1984-12-11","validTo":"1992-08-23","current":false,"derived":true,"evidenceMineId":"4200100","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4200100|P16663|1984-12-11|C00955|1950-01-01|51260"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P22198","name":"Bxg Inc"},"object":{"type":"mine","id":"4200100","name":"Horse Canyon Mine"},"validFrom":"1992-08-24","validTo":"1994-05-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4200100|P22198|1992-08-24|1994-05-31"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C14773","name":"Corman David B"},"object":{"type":"mine","id":"4200100","name":"Horse Canyon Mine"},"validFrom":"1992-08-24","validTo":"1994-05-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4200100|C14773|1992-08-24|1994-05-31"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C14773","name":"Corman David B"},"object":{"type":"operator","id":"P22198","name":"Bxg Inc"},"validFrom":"1992-08-24","validTo":"1994-05-31","current":false,"derived":true,"evidenceMineId":"4200100","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4200100|P22198|1992-08-24|C14773|1992-08-24|93852"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P22791","name":"Intermountain Power Agency"},"object":{"type":"mine","id":"4200100","name":"Horse Canyon Mine"},"validFrom":"1994-06-01","validTo":"2000-08-01","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4200100|P22791|1994-06-01|2000-08-01"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C15069","name":"Intermountain Power Agency"},"object":{"type":"mine","id":"4200100","name":"Horse Canyon Mine"},"validFrom":"1994-06-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4200100|C15069|1994-06-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C15069","name":"Intermountain Power Agency"},"object":{"type":"operator","id":"P22791","name":"Intermountain Power Agency"},"validFrom":"1994-06-01","validTo":"2000-08-01","current":false,"derived":true,"evidenceMineId":"4200100","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4200100|P22791|1994-06-01|C15069|1994-06-01|94658"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C13408","name":"Robert E  Murray"},"object":{"type":"mine","id":"4200100","name":"Horse Canyon Mine"},"validFrom":"1999-02-24","validTo":"2020-09-16","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4200100|C13408|1999-02-24|2020-09-16"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P24505","name":"Utah American Energy Inc"},"object":{"type":"mine","id":"4200100","name":"Horse Canyon Mine"},"validFrom":"2000-08-02","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4200100|P24505|2000-08-02|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C13408","name":"Robert E  Murray"},"object":{"type":"operator","id":"P24505","name":"Utah American Energy Inc"},"validFrom":"2000-08-02","validTo":"2020-09-16","current":false,"derived":true,"evidenceMineId":"4200100","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4200100|P24505|2000-08-02|C13408|1999-02-24|89571"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0157801","name":"ACNR Holdings, Inc"},"object":{"type":"mine","id":"4200100","name":"Horse Canyon Mine"},"validFrom":"2020-09-17","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4200100|0157801|2020-09-17|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0157801","name":"ACNR Holdings, Inc"},"object":{"type":"operator","id":"P24505","name":"Utah American Energy Inc"},"validFrom":"2020-09-17","validTo":null,"current":true,"derived":true,"evidenceMineId":"4200100","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4200100|P24505|2000-08-02|0157801|2020-09-17|32651"}}],"coverage":{"historyRecords":6,"edgeCount":17,"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":"1993-06-15","lastDate":"1993-06-15","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":6,"firstDate":"1950-01-01","lastDate":"2000-08-02","metrics":{"recentRows":0,"currentOperatorTenures":2,"completedOperatorTenures":4},"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/4200100/safety","description":"Full-period safety series, top CFR sections and paginated activity. Requires PostgreSQL."},"silica":{"href":"/api/v1/mines/4200100/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":"4200100","dataSource":"postgres","snapshotId":"2026-10-13T11:19:05.459773+00:00","completedAt":"2026-10-13T11:26:59.401Z","sourceCount":20,"totalRows":17906804}}