{"data":{"schemaVersion":"realm.mine-profile.v1","generatedAt":"2026-10-18T09:31:49.615Z","identity":{"mine_id":"2100497","name":"DANUBE WASHED SAND AND GRAVEL","status":"Abandoned","status_date":"2003-05-02","mine_type":"Surface","coal_metal":"M","commodity":"Construction Sand and Gravel","state":"MN","county":"Renville","nearest_town":"Danube","operator_id":"L01625","operator_name":"Central Allied Enterprises Inc","controller_id":"M01455","controller_name":"Central Allied Enterprises Inc","district":"M4","office":"Duluth District","employees":0,"latitude":null,"longitude":null},"coverage":{"contributingSources":5,"registeredSources":20,"sourceRows":27},"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":"2026-10-18T09:31:49.615908+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":"2100497","name":"DANUBE WASHED SAND AND GRAVEL"},"operator":{"type":"operator","id":"L01625","name":"Central Allied Enterprises Inc"},"controller":{"type":"controller","id":"M01455","name":"Central Allied Enterprises Inc"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-18T09:31:49.615908+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M01455","name":"Central Allied Enterprises Inc"},"object":{"type":"mine","id":"2100497","name":"DANUBE WASHED SAND AND GRAVEL"},"validFrom":"1950-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"2100497|M01455|1950-01-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L08702","name":"Danube Washed Sand & Gravel"},"object":{"type":"mine","id":"2100497","name":"DANUBE WASHED SAND AND GRAVEL"},"validFrom":"1950-01-01","validTo":"1986-07-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"2100497|L08702|1950-01-01|1986-07-30"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M06891","name":"Ellsworth A  Kaiser  et al"},"object":{"type":"mine","id":"2100497","name":"DANUBE WASHED SAND AND GRAVEL"},"validFrom":"1950-01-01","validTo":"1986-07-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"2100497|M06891|1950-01-01|1986-07-30"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M06891","name":"Ellsworth A  Kaiser  et al"},"object":{"type":"operator","id":"L08702","name":"Danube Washed Sand & Gravel"},"validFrom":"1950-01-01","validTo":"1986-07-30","current":false,"derived":true,"evidenceMineId":"2100497","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"2100497|L08702|1950-01-01|M06891|1950-01-01|139625"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L08703","name":"Danube Washed Sand & Gravel Company"},"object":{"type":"mine","id":"2100497","name":"DANUBE WASHED SAND AND GRAVEL"},"validFrom":"1986-07-31","validTo":"1995-04-02","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"2100497|L08703|1986-07-31|1995-04-02"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M06892","name":"Richard  Schroeder  et al"},"object":{"type":"mine","id":"2100497","name":"DANUBE WASHED SAND AND GRAVEL"},"validFrom":"1986-07-31","validTo":"1995-04-02","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"2100497|M06892|1986-07-31|1995-04-02"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M06892","name":"Richard  Schroeder  et al"},"object":{"type":"operator","id":"L08703","name":"Danube Washed Sand & Gravel Company"},"validFrom":"1986-07-31","validTo":"1995-04-02","current":false,"derived":true,"evidenceMineId":"2100497","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"2100497|L08703|1986-07-31|M06892|1986-07-31|139626"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L01625","name":"Central Allied Enterprises Inc"},"object":{"type":"mine","id":"2100497","name":"DANUBE WASHED SAND AND GRAVEL"},"validFrom":"1995-04-03","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"2100497|L01625|1995-04-03|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M01455","name":"Central Allied Enterprises Inc"},"object":{"type":"operator","id":"L01625","name":"Central Allied Enterprises Inc"},"validFrom":"1995-04-03","validTo":null,"current":true,"derived":true,"evidenceMineId":"2100497","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"2100497|L01625|1995-04-03|M01455|1950-01-01|118741"}}],"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":"2003-05-02","lastDate":"2003-05-02","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":"1995-04-03","metrics":{"recentRows":0,"currentOperatorTenures":1,"completedOperatorTenures":2},"periods":{},"recentRecords":[]},{"id":"msha-inspections","name":"Inspections","domains":["safety","compliance"],"products":["inspection mix","on-site hours","event context","citation rate denominator"],"rowCount":1,"firstDate":"2000-09-01","lastDate":"2000-09-01","metrics":{"inspectors":1,"recentRows":0,"onSiteHours":5,"inspectionHours":8,"inspectionSamples":0},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"269282","EVENT_NO":"0811713","INSPECTION_BEGIN_DT":"09/01/2000","INSPECTION_END_DT":"09/01/2000","ACTIVITY_CODE":"01","ACTIVITY":"REGULAR INSPECTION","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"8","SUM_TOTAL_ON_SITE_HOURS":"5","sourceDate":"2000-09-01"}]},{"id":"msha-mine-production-quarterly","name":"Mine Employment and Production — Quarterly","domains":["production","safety","compliance"],"products":["production trend","employee hours","rate denominators","seasonality"],"rowCount":21,"firstDate":null,"lastDate":null,"metrics":{},"periods":{"2003-Q3":{"hours":0,"employees":0,"production":0},"2003-Q2":{"hours":0,"employees":0,"production":0},"2003-Q1":{"hours":0,"employees":0,"production":0},"2002-Q4":{"hours":0,"employees":0,"production":0},"2002-Q3":{"hours":0,"employees":0,"production":0},"2002-Q2":{"hours":0,"employees":0,"production":0},"2002-Q1":{"hours":0,"employees":0,"production":0},"2001-Q4":{"hours":0,"employees":0,"production":0},"2001-Q3":{"hours":0,"employees":0,"production":0},"2001-Q2":{"hours":0,"employees":0,"production":0},"2001-Q1":{"hours":0,"employees":0,"production":0},"2000-Q4":{"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/2100497/safety","description":"Full-period safety series, top CFR sections and paginated activity. Requires PostgreSQL."},"silica":{"href":"/api/v1/mines/2100497/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":"2100497","dataSource":"postgres","snapshotId":"2026-10-18T09:31:49.615908+00:00","completedAt":"2026-10-18T09:31:49.615Z","sourceCount":20,"totalRows":17915666}}