{"data":{"schemaVersion":"realm.mine-profile.v1","generatedAt":"2026-10-13T11:26:59.401Z","identity":{"mine_id":"4702970","name":"KUHN PIT","status":"Abandoned","status_date":"2001-07-16","mine_type":"Surface","coal_metal":"M","commodity":"Construction Sand and Gravel","state":"WI","county":"Lincoln","nearest_town":"","operator_id":"L35303","operator_name":"Kuhn Gravel & Concrete Service","controller_id":"M35303","controller_name":"Kenneth  Kuhn","district":"M4","office":"Duluth District","employees":0,"latitude":null,"longitude":null},"coverage":{"contributingSources":6,"registeredSources":20,"sourceRows":19},"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":"4702970","name":"KUHN PIT"},"operator":{"type":"operator","id":"L35303","name":"Kuhn Gravel & Concrete Service"},"controller":{"type":"controller","id":"M35303","name":"Kenneth  Kuhn"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L35303","name":"Kuhn Gravel & Concrete Service"},"object":{"type":"mine","id":"4702970","name":"KUHN PIT"},"validFrom":"1993-03-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4702970|L35303|1993-03-01|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M35303","name":"Kenneth  Kuhn"},"object":{"type":"mine","id":"4702970","name":"KUHN PIT"},"validFrom":"1993-03-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4702970|M35303|1993-03-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M35303","name":"Kenneth  Kuhn"},"object":{"type":"operator","id":"L35303","name":"Kuhn Gravel & Concrete Service"},"validFrom":"1993-03-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"4702970","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4702970|L35303|1993-03-01|M35303|1993-03-01|164207"}}],"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":"2001-07-16","lastDate":"2001-07-16","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":"1993-03-01","lastDate":"1993-03-01","metrics":{"recentRows":0,"currentOperatorTenures":1,"completedOperatorTenures":0},"periods":{},"recentRecords":[]},{"id":"msha-inspections","name":"Inspections","domains":["safety","compliance"],"products":["inspection mix","on-site hours","event context","citation rate denominator"],"rowCount":2,"firstDate":"2000-06-20","lastDate":"2001-07-12","metrics":{"inspectors":2,"recentRows":0,"onSiteHours":3,"inspectionHours":11,"inspectionSamples":0},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"241833","EVENT_NO":"0688678","INSPECTION_BEGIN_DT":"07/12/2001","INSPECTION_END_DT":"07/12/2001","ACTIVITY_CODE":"37","ACTIVITY":"MISCELLANEOUS INSPECTION/INVESTIGATION","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"7","SUM_TOTAL_ON_SITE_HOURS":"1","sourceDate":"2001-07-12"},{"SOURCE_ROW_NUMBER":"930765","EVENT_NO":"0753962","INSPECTION_BEGIN_DT":"06/20/2000","INSPECTION_END_DT":"06/20/2000","ACTIVITY_CODE":"01","ACTIVITY":"REGULAR INSPECTION","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"4","SUM_TOTAL_ON_SITE_HOURS":"2","sourceDate":"2000-06-20"}]},{"id":"msha-mine-production-quarterly","name":"Mine Employment and Production — Quarterly","domains":["production","safety","compliance"],"products":["production trend","employee hours","rate denominators","seasonality"],"rowCount":12,"firstDate":null,"lastDate":null,"metrics":{},"periods":{"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":88,"employees":3,"production":0},"2000-Q3":{"hours":213,"employees":3,"production":0},"2000-Q2":{"hours":93,"employees":3,"production":0},"2000-Q1":{"hours":0,"employees":0,"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":2,"firstDate":null,"lastDate":null,"metrics":{},"periods":{"2000":{"hours":394,"employees":3,"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/4702970/safety","description":"Full-period safety series, top CFR sections and paginated activity. Requires PostgreSQL."},"silica":{"href":"/api/v1/mines/4702970/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":"4702970","dataSource":"postgres","snapshotId":"2026-10-13T11:19:05.459773+00:00","completedAt":"2026-10-13T11:26:59.401Z","sourceCount":20,"totalRows":17906804}}