{"data":{"schemaVersion":"realm.mine-profile.v1","generatedAt":"2026-10-13T11:26:59.401Z","identity":{"mine_id":"3001710","name":"Big John Mine","status":"Abandoned","status_date":"1989-02-01","mine_type":"Surface","coal_metal":"M","commodity":"Crushed, Broken Stone NEC","state":"NY","county":"Westchester","nearest_town":"?","operator_id":"L07170","operator_name":"Empire Emery Mining Corp","controller_id":"M05712","controller_name":"Leardi John","district":"M2","office":"Albany NY 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":"2026-10-13T11:19:05.459773+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":"3001710","name":"Big John Mine"},"operator":{"type":"operator","id":"L07170","name":"Empire Emery Mining Corp"},"controller":{"type":"controller","id":"M05712","name":"Leardi John"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L04047","name":"Ernest Bates"},"object":{"type":"mine","id":"3001710","name":"Big John Mine"},"validFrom":"1950-01-01","validTo":"1979-08-27","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3001710|L04047|1950-01-01|1979-08-27"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M03247","name":"Bates Ernest"},"object":{"type":"mine","id":"3001710","name":"Big John Mine"},"validFrom":"1950-01-01","validTo":"1979-08-27","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3001710|M03247|1950-01-01|1979-08-27"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M03247","name":"Bates Ernest"},"object":{"type":"operator","id":"L04047","name":"Ernest Bates"},"validFrom":"1950-01-01","validTo":"1979-08-27","current":false,"derived":true,"evidenceMineId":"3001710","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3001710|L04047|1950-01-01|M03247|1950-01-01|128569"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M03248","name":"Gillan Frederick D"},"object":{"type":"mine","id":"3001710","name":"Big John Mine"},"validFrom":"1950-01-01","validTo":"1989-01-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3001710|M03248|1950-01-01|1989-01-30"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L04048","name":"Emeri-Crete Inc"},"object":{"type":"mine","id":"3001710","name":"Big John Mine"},"validFrom":"1979-08-28","validTo":"1984-04-01","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3001710|L04048|1979-08-28|1984-04-01"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M03248","name":"Gillan Frederick D"},"object":{"type":"operator","id":"L04048","name":"Emeri-Crete Inc"},"validFrom":"1979-08-28","validTo":"1984-04-01","current":false,"derived":true,"evidenceMineId":"3001710","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3001710|L04048|1979-08-28|M03248|1950-01-01|128571"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L07170","name":"Empire Emery Mining Corp"},"object":{"type":"mine","id":"3001710","name":"Big John Mine"},"validFrom":"1984-04-02","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3001710|L07170|1984-04-02|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M05712","name":"Leardi John"},"object":{"type":"mine","id":"3001710","name":"Big John Mine"},"validFrom":"1984-04-02","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3001710|M05712|1984-04-02|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M05712","name":"Leardi John"},"object":{"type":"operator","id":"L07170","name":"Empire Emery Mining Corp"},"validFrom":"1984-04-02","validTo":null,"current":true,"derived":true,"evidenceMineId":"3001710","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3001710|L07170|1984-04-02|M05712|1984-04-02|135198"}}],"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":"1989-02-01","lastDate":"1989-02-01","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":"1984-04-02","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/3001710/safety","description":"Full-period safety series, top CFR sections and paginated activity. Requires PostgreSQL."},"silica":{"href":"/api/v1/mines/3001710/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":"3001710","dataSource":"postgres","snapshotId":"2026-10-13T11:19:05.459773+00:00","completedAt":"2026-10-13T11:26:59.401Z","sourceCount":20,"totalRows":17906804}}