{"data":{"schemaVersion":"realm.mine-profile.v1","generatedAt":"2026-10-13T11:26:59.401Z","identity":{"mine_id":"4702196","name":"Oakfield Quarry","status":"Abandoned","status_date":"1980-05-27","mine_type":"Surface","coal_metal":"M","commodity":"Crushed, Broken Limestone NEC","state":"WI","county":"Fond Du Lac","nearest_town":"","operator_id":"L00772","operator_name":"Eden Stone Company Inc","controller_id":"0177640","controller_name":"EVS Master Holdco LLC","district":"M4","office":"Duluth District","employees":0,"latitude":null,"longitude":null},"coverage":{"contributingSources":3,"registeredSources":20,"sourceRows":6},"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":"4702196","name":"Oakfield Quarry"},"operator":{"type":"operator","id":"L00772","name":"Eden Stone Company Inc"},"controller":{"type":"controller","id":"0177640","name":"EVS Master Holdco LLC"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L00772","name":"Eden Stone Company Inc"},"object":{"type":"mine","id":"4702196","name":"Oakfield Quarry"},"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":"4702196|L00772|1950-01-01|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00635","name":"William  Gesell et al"},"object":{"type":"mine","id":"4702196","name":"Oakfield Quarry"},"validFrom":"1950-01-01","validTo":"2012-12-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4702196|M00635|1950-01-01|2012-12-31"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00635","name":"William  Gesell et al"},"object":{"type":"operator","id":"L00772","name":"Eden Stone Company Inc"},"validFrom":"1950-01-01","validTo":"2012-12-31","current":false,"derived":true,"evidenceMineId":"4702196","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4702196|L00772|1950-01-01|M00635|1950-01-01|113592"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0107361","name":"David  Wirtz"},"object":{"type":"mine","id":"4702196","name":"Oakfield Quarry"},"validFrom":"2013-01-01","validTo":"2016-03-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4702196|0107361|2013-01-01|2016-03-31"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0107361","name":"David  Wirtz"},"object":{"type":"operator","id":"L00772","name":"Eden Stone Company Inc"},"validFrom":"2013-01-01","validTo":"2016-03-31","current":false,"derived":true,"evidenceMineId":"4702196","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4702196|L00772|1950-01-01|0107361|2013-01-01|19185"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00635","name":"William  Gesell et al"},"object":{"type":"mine","id":"4702196","name":"Oakfield Quarry"},"validFrom":"2016-04-01","validTo":"2023-06-27","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4702196|M00635|2016-04-01|2023-06-27"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00635","name":"William  Gesell et al"},"object":{"type":"operator","id":"L00772","name":"Eden Stone Company Inc"},"validFrom":"2016-04-01","validTo":"2023-06-27","current":false,"derived":true,"evidenceMineId":"4702196","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4702196|L00772|1950-01-01|M00635|2016-04-01|113606"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0177640","name":"EVS Master Holdco LLC"},"object":{"type":"mine","id":"4702196","name":"Oakfield Quarry"},"validFrom":"2023-06-28","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4702196|0177640|2023-06-28|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0177640","name":"EVS Master Holdco LLC"},"object":{"type":"operator","id":"L00772","name":"Eden Stone Company Inc"},"validFrom":"2023-06-28","validTo":null,"current":true,"derived":true,"evidenceMineId":"4702196","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4702196|L00772|1950-01-01|0177640|2023-06-28|38083"}}],"coverage":{"historyRecords":4,"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":"1980-05-27","lastDate":"1980-05-27","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":4,"firstDate":"1950-01-01","lastDate":"1950-01-01","metrics":{"recentRows":0,"currentOperatorTenures":4,"completedOperatorTenures":0},"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/4702196/safety","description":"Full-period safety series, top CFR sections and paginated activity. Requires PostgreSQL."},"silica":{"href":"/api/v1/mines/4702196/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":"4702196","dataSource":"postgres","snapshotId":"2026-10-13T11:19:05.459773+00:00","completedAt":"2026-10-13T11:26:59.401Z","sourceCount":20,"totalRows":17906804}}