{"data":{"schemaVersion":"realm.mine-profile.v1","generatedAt":"2026-10-13T11:26:59.401Z","identity":{"mine_id":"2103463","name":"Portable No. 2","status":"Abandoned","status_date":"2006-08-17","mine_type":"Surface","coal_metal":"M","commodity":"Crushed, Broken Limestone NEC","state":"MN","county":"Houston","nearest_town":"Money Creek","operator_id":"L07887","operator_name":"Orval Sorum & Sons","controller_id":"M06269","controller_name":"Orval  L  Sorum","district":"M4","office":"Duluth District","employees":0,"latitude":44.02058,"longitude":-91.598255},"coverage":{"contributingSources":6,"registeredSources":20,"sourceRows":18},"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":"2103463","name":"Portable No. 2"},"operator":{"type":"operator","id":"L07887","name":"Orval Sorum & Sons"},"controller":{"type":"controller","id":"M06269","name":"Orval  L  Sorum"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M06269","name":"Orval  L  Sorum et al"},"object":{"type":"mine","id":"2103463","name":"Portable No. 2"},"validFrom":"1980-02-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2103463|M06269|1980-02-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L07887","name":"Orval Sorum & Sons"},"object":{"type":"mine","id":"2103463","name":"Portable No. 2"},"validFrom":"2004-08-04","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2103463|L07887|2004-08-04|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M06269","name":"Orval  L  Sorum et al"},"object":{"type":"operator","id":"L07887","name":"Orval Sorum & Sons"},"validFrom":"2004-08-04","validTo":null,"current":true,"derived":true,"evidenceMineId":"2103463","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2103463|L07887|2004-08-04|M06269|1980-02-01|138039"}}],"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":"2006-08-17","lastDate":"2006-08-17","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":"2004-08-04","lastDate":"2004-08-04","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":3,"firstDate":"2004-08-04","lastDate":"2006-08-16","metrics":{"inspectors":3,"recentRows":0,"onSiteHours":3,"inspectionHours":14,"inspectionSamples":0},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"240277","EVENT_NO":"0999070","INSPECTION_BEGIN_DT":"08/16/2006","INSPECTION_END_DT":"08/16/2006","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"8","SUM_TOTAL_ON_SITE_HOURS":"1","sourceDate":"2006-08-16"},{"SOURCE_ROW_NUMBER":"170354","EVENT_NO":"0977859","INSPECTION_BEGIN_DT":"11/16/2004","INSPECTION_END_DT":"11/16/2004","ACTIVITY_CODE":"10","ACTIVITY":"ATTEMPTED INSPECTION","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"5","SUM_TOTAL_ON_SITE_HOURS":"1","sourceDate":"2004-11-16"},{"SOURCE_ROW_NUMBER":"1155419","EVENT_NO":"0968635","INSPECTION_BEGIN_DT":"08/04/2004","INSPECTION_END_DT":"08/04/2004","ACTIVITY_CODE":"82","ACTIVITY":"AT MINE TRAINING ACTIVITIES","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"1","SUM_TOTAL_ON_SITE_HOURS":"1","sourceDate":"2004-08-04"}]},{"id":"msha-mine-production-quarterly","name":"Mine Employment and Production — Quarterly","domains":["production","safety","compliance"],"products":["production trend","employee hours","rate denominators","seasonality"],"rowCount":9,"firstDate":null,"lastDate":null,"metrics":{},"periods":{"2006-Q3":{"hours":2,"employees":1,"production":0},"2006-Q2":{"hours":0,"employees":0,"production":0},"2006-Q1":{"hours":0,"employees":0,"production":0},"2005-Q4":{"hours":373,"employees":2,"production":0},"2005-Q3":{"hours":1952,"employees":3,"production":0},"2005-Q2":{"hours":1140,"employees":2,"production":0},"2005-Q1":{"hours":0,"employees":0,"production":0},"2004-Q4":{"hours":1248,"employees":2,"production":0},"2004-Q3":{"hours":1057,"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":3,"firstDate":null,"lastDate":null,"metrics":{},"periods":{"2004":{"hours":2305,"employees":2,"production":0},"2005":{"hours":3465,"employees":2,"production":0},"2006":{"hours":2,"employees":1,"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/2103463/safety","description":"Full-period safety series, top CFR sections and paginated activity. Requires PostgreSQL."},"silica":{"href":"/api/v1/mines/2103463/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":"2103463","dataSource":"postgres","snapshotId":"2026-10-13T11:19:05.459773+00:00","completedAt":"2026-10-13T11:26:59.401Z","sourceCount":20,"totalRows":17906804}}