{"data":{"schemaVersion":"realm.mine-profile.v1","generatedAt":"2026-10-17T06:17:15.228Z","identity":{"mine_id":"0503572","name":"Crystal Hill","status":"Abandoned","status_date":"1988-07-18","mine_type":"Facility","coal_metal":"M","commodity":"Gold Ore","state":"CO","county":"Saguache","nearest_town":"","operator_id":"L09686","operator_name":"Draco Gold Mines Inc","controller_id":"M07590","controller_name":"Sharp James E & Lawrence Barker","district":"M6","office":"Denver CO Field Office","employees":0,"latitude":null,"longitude":null},"coverage":{"contributingSources":3,"registeredSources":20,"sourceRows":4},"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":"0503572","name":"Crystal Hill"},"operator":{"type":"operator","id":"L09686","name":"Draco Gold Mines Inc"},"controller":{"type":"controller","id":"M07590","name":"Sharp James E & Lawrence Barker"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-17T05:35:58.500035+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L08629","name":"Crystal Hill Mining Company-Draco Mines"},"object":{"type":"mine","id":"0503572","name":"Crystal Hill"},"validFrom":"1980-09-01","validTo":"1987-07-08","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0503572|L08629|1980-09-01|1987-07-08"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M03770","name":"Southern Cross Ltd"},"object":{"type":"mine","id":"0503572","name":"Crystal Hill"},"validFrom":"1980-09-01","validTo":"1987-07-08","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0503572|M03770|1980-09-01|1987-07-08"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M03770","name":"Southern Cross Ltd"},"object":{"type":"operator","id":"L08629","name":"Crystal Hill Mining Company-Draco Mines"},"validFrom":"1980-09-01","validTo":"1987-07-08","current":false,"derived":true,"evidenceMineId":"0503572","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0503572|L08629|1980-09-01|M03770|1980-09-01|130073"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L09686","name":"Draco Gold Mines Inc"},"object":{"type":"mine","id":"0503572","name":"Crystal Hill"},"validFrom":"1987-07-09","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0503572|L09686|1987-07-09|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M07590","name":"Sharp James E & Lawrence Barker"},"object":{"type":"mine","id":"0503572","name":"Crystal Hill"},"validFrom":"1987-07-09","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0503572|M07590|1987-07-09|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M07590","name":"Sharp James E & Lawrence Barker"},"object":{"type":"operator","id":"L09686","name":"Draco Gold Mines Inc"},"validFrom":"1987-07-09","validTo":null,"current":true,"derived":true,"evidenceMineId":"0503572","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0503572|L09686|1987-07-09|M07590|1987-07-09|141603"}}],"coverage":{"historyRecords":2,"edgeCount":6,"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":"1988-07-18","lastDate":"1988-07-18","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":2,"firstDate":"1980-09-01","lastDate":"1987-07-09","metrics":{"recentRows":0,"currentOperatorTenures":1,"completedOperatorTenures":1},"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/0503572/safety","description":"Full-period safety series, top CFR sections and paginated activity. Requires PostgreSQL."},"silica":{"href":"/api/v1/mines/0503572/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":"0503572","dataSource":"postgres","snapshotId":"2026-10-17T05:35:58.500035+00:00","completedAt":"2026-10-17T06:17:15.228Z","sourceCount":20,"totalRows":15450873}}