{"data":{"schemaVersion":"realm.mine-profile.v1","generatedAt":"2026-10-17T06:17:15.228Z","identity":{"mine_id":"2600785","name":"BUCKHORN MINE","status":"Abandoned","status_date":"1998-10-20","mine_type":"Surface","coal_metal":"M","commodity":"Gold Ore","state":"NV","county":"Eureka","nearest_town":"Carlin","operator_id":"L12446","operator_name":"Cominco American Resources Inc","controller_id":"M01474","controller_name":"Teck Resources Limited","district":"M7","office":"Elko NV Field Office","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":"2026-10-17T05:35:58.500035+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":"2600785","name":"BUCKHORN MINE"},"operator":{"type":"operator","id":"L12446","name":"Cominco American Resources Inc"},"controller":{"type":"controller","id":"M01474","name":"Teck Resources Limited"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-17T05:35:58.500035+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L04738","name":"Bar Resources Inc"},"object":{"type":"mine","id":"2600785","name":"BUCKHORN MINE"},"validFrom":"1950-01-01","validTo":"1980-05-12","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"2600785|L04738|1950-01-01|1980-05-12"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M03827","name":"Bar Resources Ltd"},"object":{"type":"mine","id":"2600785","name":"BUCKHORN MINE"},"validFrom":"1950-01-01","validTo":"1980-05-12","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"2600785|M03827|1950-01-01|1980-05-12"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M03827","name":"Bar Resources Ltd"},"object":{"type":"operator","id":"L04738","name":"Bar Resources Inc"},"validFrom":"1950-01-01","validTo":"1980-05-12","current":false,"derived":true,"evidenceMineId":"2600785","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"2600785|L04738|1950-01-01|M03827|1950-01-01|130212"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L04739","name":"Bethex Corp"},"object":{"type":"mine","id":"2600785","name":"BUCKHORN MINE"},"validFrom":"1980-05-13","validTo":"1983-09-27","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"2600785|L04739|1980-05-13|1983-09-27"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M03828","name":"Bethlehem Copper Corp"},"object":{"type":"mine","id":"2600785","name":"BUCKHORN MINE"},"validFrom":"1980-05-13","validTo":"1983-09-27","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"2600785|M03828|1980-05-13|1983-09-27"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M03828","name":"Bethlehem Copper Corp"},"object":{"type":"operator","id":"L04739","name":"Bethex Corp"},"validFrom":"1980-05-13","validTo":"1983-09-27","current":false,"derived":true,"evidenceMineId":"2600785","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"2600785|L04739|1980-05-13|M03828|1980-05-13|130213"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L12446","name":"Cominco American Resources Inc"},"object":{"type":"mine","id":"2600785","name":"BUCKHORN MINE"},"validFrom":"1983-09-28","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"2600785|L12446|1983-09-28|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M01474","name":"Teck Resources Limited"},"object":{"type":"mine","id":"2600785","name":"BUCKHORN MINE"},"validFrom":"1983-09-28","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"2600785|M01474|1983-09-28|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M01474","name":"Teck Resources Limited"},"object":{"type":"operator","id":"L12446","name":"Cominco American Resources Inc"},"validFrom":"1983-09-28","validTo":null,"current":true,"derived":true,"evidenceMineId":"2600785","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"2600785|L12446|1983-09-28|M01474|1983-09-28|118828"}}],"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":"1998-10-20","lastDate":"1998-10-20","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":"1983-09-28","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/2600785/safety","description":"Full-period safety series, top CFR sections and paginated activity. Requires PostgreSQL."},"silica":{"href":"/api/v1/mines/2600785/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":"2600785","dataSource":"postgres","snapshotId":"2026-10-17T05:35:58.500035+00:00","completedAt":"2026-10-17T06:17:15.228Z","sourceCount":20,"totalRows":15450873}}