{"data":{"schemaVersion":"realm.mine-profile.v1","generatedAt":"2026-10-13T11:26:59.401Z","identity":{"mine_id":"0404860","name":"Briggs","status":"Abandoned","status_date":"1991-06-12","mine_type":"Surface","coal_metal":"M","commodity":"Gold Ore","state":"CA","county":"Inyo","nearest_town":"","operator_id":"L11967","operator_name":"Cr Briggs","controller_id":"0104913","controller_name":"Atna Resources Ltd.","district":"M7","office":"San Bernardino CA Field Office","employees":0,"latitude":null,"longitude":null},"coverage":{"contributingSources":3,"registeredSources":20,"sourceRows":6},"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":"0404860","name":"Briggs"},"operator":{"type":"operator","id":"L11967","name":"Cr Briggs"},"controller":{"type":"controller","id":"0104913","name":"Atna Resources Ltd."},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L09274","name":"David L Pruett"},"object":{"type":"mine","id":"0404860","name":"Briggs"},"validFrom":"1987-01-01","validTo":"1989-06-28","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0404860|L09274|1987-01-01|1989-06-28"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M01631","name":"David L  Pruett"},"object":{"type":"mine","id":"0404860","name":"Briggs"},"validFrom":"1987-01-01","validTo":"1989-06-28","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0404860|M01631|1987-01-01|1989-06-28"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M01631","name":"David L  Pruett"},"object":{"type":"operator","id":"L09274","name":"David L Pruett"},"validFrom":"1987-01-01","validTo":"1989-06-28","current":false,"derived":true,"evidenceMineId":"0404860","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0404860|L09274|1987-01-01|M01631|1987-01-01|119716"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M06490","name":"Addington Larry"},"object":{"type":"mine","id":"0404860","name":"Briggs"},"validFrom":"1989-02-13","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0404860|M06490|1989-02-13|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L10819","name":"Addwest Gold Inc"},"object":{"type":"mine","id":"0404860","name":"Briggs"},"validFrom":"1989-06-29","validTo":"1990-08-26","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0404860|L10819|1989-06-29|1990-08-26"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M06490","name":"Addington Larry"},"object":{"type":"operator","id":"L10819","name":"Addwest Gold Inc"},"validFrom":"1989-06-29","validTo":"1990-08-26","current":false,"derived":true,"evidenceMineId":"0404860","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0404860|L10819|1989-06-29|M06490|1989-02-13|138644"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L11967","name":"Cr Briggs"},"object":{"type":"mine","id":"0404860","name":"Briggs"},"validFrom":"1990-08-27","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0404860|L11967|1990-08-27|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M07931","name":"Canyon Resources Corp"},"object":{"type":"mine","id":"0404860","name":"Briggs"},"validFrom":"1990-08-27","validTo":"2008-03-17","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0404860|M07931|1990-08-27|2008-03-17"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M07931","name":"Canyon Resources Corp"},"object":{"type":"operator","id":"L11967","name":"Cr Briggs"},"validFrom":"1990-08-27","validTo":"2008-03-17","current":false,"derived":true,"evidenceMineId":"0404860","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0404860|L11967|1990-08-27|M07931|1990-08-27|142363"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0104913","name":"Atna Resources Ltd."},"object":{"type":"mine","id":"0404860","name":"Briggs"},"validFrom":"2008-03-18","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0404860|0104913|2008-03-18|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0104913","name":"Atna Resources Ltd."},"object":{"type":"operator","id":"L11967","name":"Cr Briggs"},"validFrom":"2008-03-18","validTo":null,"current":true,"derived":true,"evidenceMineId":"0404860","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0404860|L11967|1990-08-27|0104913|2008-03-18|18343"}}],"coverage":{"historyRecords":4,"edgeCount":11,"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":"1991-06-12","lastDate":"1991-06-12","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":4,"firstDate":"1987-01-01","lastDate":"1990-08-27","metrics":{"recentRows":0,"currentOperatorTenures":2,"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/0404860/safety","description":"Full-period safety series, top CFR sections and paginated activity. Requires PostgreSQL."},"silica":{"href":"/api/v1/mines/0404860/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":"0404860","dataSource":"postgres","snapshotId":"2026-10-13T11:19:05.459773+00:00","completedAt":"2026-10-13T11:26:59.401Z","sourceCount":20,"totalRows":17906804}}