{"data":{"schemaVersion":"realm.mine-profile.v1","generatedAt":"2026-10-13T11:26:59.401Z","identity":{"mine_id":"2103321","name":"EL-JAY PLANT - 1","status":"Abandoned","status_date":"2004-07-09","mine_type":"Surface","coal_metal":"M","commodity":"Construction Sand and Gravel","state":"MN","county":"Clearwater","nearest_town":"BAGLEY","operator_id":"0050348","operator_name":"STEINMETZ AGGREGATE PRODUCTS","controller_id":"0040733","controller_name":"KEN  STEINMETZ","district":"M4","office":"Duluth District","employees":0,"latitude":null,"longitude":null},"coverage":{"contributingSources":5,"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":"2103321","name":"EL-JAY PLANT - 1"},"operator":{"type":"operator","id":"0050348","name":"STEINMETZ AGGREGATE PRODUCTS"},"controller":{"type":"controller","id":"0040733","name":"KEN  STEINMETZ"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"0050348","name":"STEINMETZ AGGREGATE PRODUCTS"},"object":{"type":"mine","id":"2103321","name":"EL-JAY PLANT - 1"},"validFrom":"2002-06-05","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2103321|0050348|2002-06-05|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0040733","name":"KEN  STEINMETZ"},"object":{"type":"mine","id":"2103321","name":"EL-JAY PLANT - 1"},"validFrom":"2002-06-05","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2103321|0040733|2002-06-05|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0040733","name":"KEN  STEINMETZ"},"object":{"type":"operator","id":"0050348","name":"STEINMETZ AGGREGATE PRODUCTS"},"validFrom":"2002-06-05","validTo":null,"current":true,"derived":true,"evidenceMineId":"2103321","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2103321|0050348|2002-06-05|0040733|2002-06-05|555"}}],"coverage":{"historyRecords":1,"edgeCount":3,"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":"2004-07-09","lastDate":"2004-07-09","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":1,"firstDate":"2002-06-05","lastDate":"2002-06-05","metrics":{"recentRows":0,"currentOperatorTenures":1,"completedOperatorTenures":0},"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":{"2002-Q2":{"hours":500,"employees":2,"production":0}},"recentRecords":[]},{"id":"msha-mine-production-yearly","name":"Mine Employment and Production — Yearly","domains":["production","safety","compliance"],"products":["annual trend","backfill","quarterly reconciliation"],"rowCount":1,"firstDate":null,"lastDate":null,"metrics":{},"periods":{"2002":{"hours":500,"employees":2,"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/2103321/safety","description":"Full-period safety series, top CFR sections and paginated activity. Requires PostgreSQL."},"silica":{"href":"/api/v1/mines/2103321/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":"2103321","dataSource":"postgres","snapshotId":"2026-10-13T11:19:05.459773+00:00","completedAt":"2026-10-13T11:26:59.401Z","sourceCount":20,"totalRows":17906804}}