{"data":{"schemaVersion":"realm.mine-profile.v1","generatedAt":"2026-10-13T11:26:59.401Z","identity":{"mine_id":"4702650","name":"CEDAR RAPIDS I","status":"Abandoned","status_date":"2000-09-18","mine_type":"Surface","coal_metal":"M","commodity":"Construction Sand and Gravel","state":"WI","county":"Juneau","nearest_town":"","operator_id":"L07510","operator_name":"Arthur Overgaard Division","controller_id":"M00893","controller_name":"Mathy Construction Company","district":"M4","office":"Duluth District","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":"2026-10-13T11:19:05.459773+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":"4702650","name":"CEDAR RAPIDS I"},"operator":{"type":"operator","id":"L07510","name":"Arthur Overgaard Division"},"controller":{"type":"controller","id":"M00893","name":"Mathy Construction Company"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00029","name":"Adolph T Schwartz"},"object":{"type":"mine","id":"4702650","name":"CEDAR RAPIDS I"},"validFrom":"1950-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4702650|M00029|1950-01-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L00080","name":"Arthur Overgaard Inc"},"object":{"type":"mine","id":"4702650","name":"CEDAR RAPIDS I"},"validFrom":"1980-03-01","validTo":"1985-06-03","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4702650|L00080|1980-03-01|1985-06-03"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00029","name":"Adolph T Schwartz"},"object":{"type":"operator","id":"L00080","name":"Arthur Overgaard Inc"},"validFrom":"1980-03-01","validTo":"1985-06-03","current":false,"derived":true,"evidenceMineId":"4702650","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4702650|L00080|1980-03-01|M00029|1950-01-01|102137"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00893","name":"Mathy Construction Company"},"object":{"type":"mine","id":"4702650","name":"CEDAR RAPIDS I"},"validFrom":"1984-07-17","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4702650|M00893|1984-07-17|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L07510","name":"Arthur Overgaard Division"},"object":{"type":"mine","id":"4702650","name":"CEDAR RAPIDS I"},"validFrom":"1985-06-04","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4702650|L07510|1985-06-04|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00893","name":"Mathy Construction Company"},"object":{"type":"operator","id":"L07510","name":"Arthur Overgaard Division"},"validFrom":"1985-06-04","validTo":null,"current":true,"derived":true,"evidenceMineId":"4702650","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4702650|L07510|1985-06-04|M00893|1984-07-17|115789"}}],"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":"2000-09-18","lastDate":"2000-09-18","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":"1980-03-01","lastDate":"1985-06-04","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/4702650/safety","description":"Full-period safety series, top CFR sections and paginated activity. Requires PostgreSQL."},"silica":{"href":"/api/v1/mines/4702650/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":"4702650","dataSource":"postgres","snapshotId":"2026-10-13T11:19:05.459773+00:00","completedAt":"2026-10-13T11:26:59.401Z","sourceCount":20,"totalRows":17906804}}