{"data":{"schemaVersion":"realm.mine-profile.v1","generatedAt":"2026-10-13T11:26:59.401Z","identity":{"mine_id":"2401425","name":"ANTLER MINE","status":"Abandoned","status_date":"1999-10-25","mine_type":"Surface","coal_metal":"M","commodity":"Talc","state":"MT","county":"Madison","nearest_town":"","operator_id":"L12456","operator_name":"A M Welles Inc","controller_id":"M09555","controller_name":"Alfred  Hokanson","district":"M6","office":"Helena MT Field Office","employees":0,"latitude":null,"longitude":null},"coverage":{"contributingSources":4,"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":"2401425","name":"ANTLER MINE"},"operator":{"type":"operator","id":"L12456","name":"A M Welles Inc"},"controller":{"type":"controller","id":"M09555","name":"Alfred  Hokanson"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L05379","name":"Antler Mining Company"},"object":{"type":"mine","id":"2401425","name":"ANTLER MINE"},"validFrom":"1978-03-09","validTo":"1984-10-08","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2401425|L05379|1978-03-09|1984-10-08"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M04345","name":"Nolte Robert & Sylvan Donegan Jr"},"object":{"type":"mine","id":"2401425","name":"ANTLER MINE"},"validFrom":"1978-03-09","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2401425|M04345|1978-03-09|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M04345","name":"Nolte Robert & Sylvan Donegan Jr"},"object":{"type":"operator","id":"L05379","name":"Antler Mining Company"},"validFrom":"1978-03-09","validTo":"1984-10-08","current":false,"derived":true,"evidenceMineId":"2401425","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2401425|L05379|1978-03-09|M04345|1978-03-09|131786"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M03644","name":"Cyprus Amax Minerals Company"},"object":{"type":"mine","id":"2401425","name":"ANTLER MINE"},"validFrom":"1980-09-22","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2401425|M03644|1980-09-22|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L04522","name":"Cyprus Industrial Minerals Company"},"object":{"type":"mine","id":"2401425","name":"ANTLER MINE"},"validFrom":"1984-10-09","validTo":"1992-06-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2401425|L04522|1984-10-09|1992-06-30"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M03644","name":"Cyprus Amax Minerals Company"},"object":{"type":"operator","id":"L04522","name":"Cyprus Industrial Minerals Company"},"validFrom":"1984-10-09","validTo":"1992-06-30","current":false,"derived":true,"evidenceMineId":"2401425","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2401425|L04522|1984-10-09|M03644|1980-09-22|129621"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M09555","name":"Alfred  Hokanson"},"object":{"type":"mine","id":"2401425","name":"ANTLER MINE"},"validFrom":"1989-04-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2401425|M09555|1989-04-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L12671","name":"Luzenac America, Inc."},"object":{"type":"mine","id":"2401425","name":"ANTLER MINE"},"validFrom":"1992-07-01","validTo":"1994-09-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2401425|L12671|1992-07-01|1994-09-30"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M01812","name":"Rio Tinto Group"},"object":{"type":"mine","id":"2401425","name":"ANTLER MINE"},"validFrom":"1992-07-01","validTo":"2011-07-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2401425|M01812|1992-07-01|2011-07-31"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M01812","name":"Rio Tinto Group"},"object":{"type":"operator","id":"L12671","name":"Luzenac America, Inc."},"validFrom":"1992-07-01","validTo":"1994-09-30","current":false,"derived":true,"evidenceMineId":"2401425","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2401425|L12671|1992-07-01|M01812|1992-07-01|121385"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L12456","name":"A M Welles Inc"},"object":{"type":"mine","id":"2401425","name":"ANTLER MINE"},"validFrom":"1994-10-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2401425|L12456|1994-10-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M09555","name":"Alfred  Hokanson"},"object":{"type":"operator","id":"L12456","name":"A M Welles Inc"},"validFrom":"1994-10-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"2401425","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2401425|L12456|1994-10-01|M09555|1989-04-01|146642"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M11763","name":"Imerys S A"},"object":{"type":"mine","id":"2401425","name":"ANTLER MINE"},"validFrom":"2011-08-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2401425|M11763|2011-08-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M11763","name":"Imerys S A"},"object":{"type":"operator","id":"L12671","name":"Luzenac America, Inc."},"validFrom":"2011-08-01","validTo":"1994-09-30","current":false,"derived":true,"evidenceMineId":"2401425","intervalAnomaly":true,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2401425|L12671|1992-07-01|M11763|2011-08-01|152328"}}],"coverage":{"historyRecords":5,"edgeCount":14,"intervalAnomalies":1,"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":"1999-10-25","lastDate":"1999-10-25","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":5,"firstDate":"1978-03-09","lastDate":"1994-10-01","metrics":{"recentRows":0,"currentOperatorTenures":1,"completedOperatorTenures":4},"periods":{},"recentRecords":[]},{"id":"msha-mine-production-quarterly","name":"Mine Employment and Production — Quarterly","domains":["production","safety","compliance"],"products":["production trend","employee hours","rate denominators","seasonality"],"rowCount":1,"firstDate":null,"lastDate":null,"metrics":{},"periods":{"2000-Q1":{"hours":0,"employees":0,"production":0}},"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/2401425/safety","description":"Full-period safety series, top CFR sections and paginated activity. Requires PostgreSQL."},"silica":{"href":"/api/v1/mines/2401425/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":"2401425","dataSource":"postgres","snapshotId":"2026-10-13T11:19:05.459773+00:00","completedAt":"2026-10-13T11:26:59.401Z","sourceCount":20,"totalRows":17906804}}