{"data":{"schemaVersion":"realm.mine-profile.v1","generatedAt":"2026-10-13T11:26:59.401Z","identity":{"mine_id":"5001739","name":"Two Cities Screening Plant","status":"Abandoned","status_date":"2011-07-20","mine_type":"Surface","coal_metal":"M","commodity":"Construction Sand and Gravel","state":"AK","county":"Fairbanks North Star","nearest_town":"north pole","operator_id":"0050612","operator_name":"Two Cities Construction, Inc.","controller_id":"0040961","controller_name":"Joanne  Trefethen; William  Trefethen","district":"M7","office":"Anchorage AK Field Office","employees":0,"latitude":64.769722,"longitude":-147.334444},"coverage":{"contributingSources":8,"registeredSources":20,"sourceRows":76},"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":"5001739","name":"Two Cities Screening Plant"},"operator":{"type":"operator","id":"0050612","name":"Two Cities Construction, Inc."},"controller":{"type":"controller","id":"0040961","name":"Joanne  Trefethen; William  Trefethen"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"0050612","name":"Two Cities Construction, Inc."},"object":{"type":"mine","id":"5001739","name":"Two Cities Screening Plant"},"validFrom":"2002-06-18","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"5001739|0050612|2002-06-18|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0040961","name":"Joanne  Trefethen et al"},"object":{"type":"mine","id":"5001739","name":"Two Cities Screening Plant"},"validFrom":"2002-06-18","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"5001739|0040961|2002-06-18|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0040961","name":"Joanne  Trefethen et al"},"object":{"type":"operator","id":"0050612","name":"Two Cities Construction, Inc."},"validFrom":"2002-06-18","validTo":null,"current":true,"derived":true,"evidenceMineId":"5001739","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"5001739|0050612|2002-06-18|0040961|2002-06-18|1072"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0040961","name":"William  Trefethen et al"},"object":{"type":"operator","id":"0050612","name":"Two Cities Construction, Inc."},"validFrom":"2002-06-18","validTo":null,"current":true,"derived":true,"evidenceMineId":"5001739","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"5001739|0050612|2002-06-18|0040961|2002-06-18|1073"}}],"coverage":{"historyRecords":2,"edgeCount":4,"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":"2011-07-20","lastDate":"2011-07-20","metrics":{},"periods":{},"recentRecords":[]},{"id":"msha-civil-penalty-dockets-decisions","name":"Civil Penalty Dockets and Decisions","domains":["compliance","legal"],"products":["docket lineage","decision outcomes","citation packet precedent"],"rowCount":1,"firstDate":"2011-10-27","lastDate":"2011-10-27","metrics":{"appeals":0,"decisions":1,"recentRows":0,"decisionPenalty":0,"originalPenalty":100},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"282630","VIOLATION_NO":"8554508","DOCKET_NO":"WEST 2010-1794M","DECISION_DT":"10/27/2011","DECISION_TYPE_CODE_DESC":"Withdrawal","ORIGINAL_PENALTY_AMT":"100.00","DECISION_PENALTY_AMT":"0.00","JUDGE_FIRST_NAME":"Jacqueline","JUDGE_LAST_NAME":"Bulluck","sourceDate":"2011-10-27"}]},{"id":"msha-contested-violations","name":"Contested Violations","domains":["compliance","legal"],"products":["contest status","time to resolution","contested-rate context"],"rowCount":1,"firstDate":"2010-06-17","lastDate":"2010-06-17","metrics":{"decisions":1,"ssChanged":1,"recentRows":0,"decisionPenalty":0,"proposedPenalty":100},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"78579","CITATION_NO":"8554508","CITATION_ISSUE_DT":"06/17/2010","DOCKET_NO":"WEST 2010-1794M","DECISION_DT":"10/27/2011","CFR_STANDARD_CODE":"56.1000","ORIGINAL_SIG_SUB_IND":"N","PROPOSED_PENALTY_AMT":"100.00","DECISION_PENALTY_AMT":".00","sourceDate":"2010-06-17"}]},{"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":"2002-06-18","lastDate":"2002-06-18","metrics":{"recentRows":0,"currentOperatorTenures":2,"completedOperatorTenures":0},"periods":{},"recentRecords":[]},{"id":"msha-inspections","name":"Inspections","domains":["safety","compliance"],"products":["inspection mix","on-site hours","event context","citation rate denominator"],"rowCount":11,"firstDate":"2002-08-13","lastDate":"2011-07-20","metrics":{"inspectors":12,"recentRows":0,"onSiteHours":31.25,"inspectionHours":72.5,"inspectionSamples":0},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"300572","EVENT_NO":"1152851","INSPECTION_BEGIN_DT":"07/20/2011","INSPECTION_END_DT":"07/20/2011","ACTIVITY_CODE":"E28","ACTIVITY":"Mine Idle Activity","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"4","SUM_TOTAL_ON_SITE_HOURS":"1","sourceDate":"2011-07-20"},{"SOURCE_ROW_NUMBER":"884092","EVENT_NO":"1140943","INSPECTION_BEGIN_DT":"06/17/2010","INSPECTION_END_DT":"06/17/2010","ACTIVITY_CODE":"E28","ACTIVITY":"Mine Idle Activity","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"4","SUM_TOTAL_ON_SITE_HOURS":"2","sourceDate":"2010-06-17"},{"SOURCE_ROW_NUMBER":"335251","EVENT_NO":"1140588","INSPECTION_BEGIN_DT":"06/23/2009","INSPECTION_END_DT":"06/23/2009","ACTIVITY_CODE":"E28","ACTIVITY":"Mine Idle Activity","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"6","SUM_TOTAL_ON_SITE_HOURS":"2.25","sourceDate":"2009-06-23"},{"SOURCE_ROW_NUMBER":"532833","EVENT_NO":"1140612","INSPECTION_BEGIN_DT":"09/02/2008","INSPECTION_END_DT":"09/15/2008","ACTIVITY_CODE":"E28","ACTIVITY":"Mine Idle Activity","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"2","SUM_TOTAL_ON_SITE_HOURS":".25","sourceDate":"2008-09-02"},{"SOURCE_ROW_NUMBER":"266340","EVENT_NO":"1140604","INSPECTION_BEGIN_DT":"06/22/2008","INSPECTION_END_DT":"06/24/2008","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"6","SUM_TOTAL_ON_SITE_HOURS":"1.5","sourceDate":"2008-06-22"},{"SOURCE_ROW_NUMBER":"376039","EVENT_NO":"1124895","INSPECTION_BEGIN_DT":"08/25/2007","INSPECTION_END_DT":"08/26/2007","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"6.5","SUM_TOTAL_ON_SITE_HOURS":"5.25","sourceDate":"2007-08-25"},{"SOURCE_ROW_NUMBER":"777310","EVENT_NO":"1131544","INSPECTION_BEGIN_DT":"06/23/2006","INSPECTION_END_DT":"06/23/2006","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"7","SUM_TOTAL_ON_SITE_HOURS":"4","sourceDate":"2006-06-23"},{"SOURCE_ROW_NUMBER":"639297","EVENT_NO":"1124256","INSPECTION_BEGIN_DT":"07/05/2005","INSPECTION_END_DT":"07/06/2005","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"10","SUM_TOTAL_ON_SITE_HOURS":"3","sourceDate":"2005-07-05"},{"SOURCE_ROW_NUMBER":"777153","EVENT_NO":"1124002","INSPECTION_BEGIN_DT":"07/19/2004","INSPECTION_END_DT":"07/19/2004","ACTIVITY_CODE":"01","ACTIVITY":"REGULAR INSPECTION","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"8","SUM_TOTAL_ON_SITE_HOURS":"4","sourceDate":"2004-07-19"},{"SOURCE_ROW_NUMBER":"631904","EVENT_NO":"0755555","INSPECTION_BEGIN_DT":"06/20/2003","INSPECTION_END_DT":"06/20/2003","ACTIVITY_CODE":"01","ACTIVITY":"REGULAR INSPECTION","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"7","SUM_TOTAL_ON_SITE_HOURS":"4","sourceDate":"2003-06-20"},{"SOURCE_ROW_NUMBER":"284982","EVENT_NO":"0647091","INSPECTION_BEGIN_DT":"08/13/2002","INSPECTION_END_DT":"08/14/2002","ACTIVITY_CODE":"01","ACTIVITY":"REGULAR INSPECTION","NBR_INSPECTOR":"2","SUM_TOTAL_INSP_HOURS":"12","SUM_TOTAL_ON_SITE_HOURS":"4","sourceDate":"2002-08-13"}]},{"id":"msha-mine-production-quarterly","name":"Mine Employment and Production — Quarterly","domains":["production","safety","compliance"],"products":["production trend","employee hours","rate denominators","seasonality"],"rowCount":55,"firstDate":null,"lastDate":null,"metrics":{},"periods":{"2011-Q2":{"hours":0,"employees":0,"production":0},"2011-Q1":{"hours":0,"employees":0,"production":0},"2010-Q4":{"hours":0,"employees":0,"production":0},"2010-Q2":{"hours":0,"employees":0,"production":0},"2009-Q4":{"hours":0,"employees":0,"production":0},"2009-Q3":{"hours":0,"employees":0,"production":0},"2009-Q2":{"hours":0,"employees":0,"production":0},"2009-Q1":{"hours":0,"employees":0,"production":0},"2008-Q4":{"hours":0,"employees":0,"production":0},"2008-Q3":{"hours":10,"employees":1,"production":0},"2008-Q2":{"hours":1,"employees":1,"production":0},"2008-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":4,"firstDate":null,"lastDate":null,"metrics":{},"periods":{"2003":{"hours":128,"employees":2,"production":0},"2005":{"hours":352,"employees":2,"production":0},"2006":{"hours":234,"employees":2,"production":0},"2008":{"hours":11,"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/5001739/safety","description":"Full-period safety series, top CFR sections and paginated activity. Requires PostgreSQL."},"silica":{"href":"/api/v1/mines/5001739/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":"5001739","dataSource":"postgres","snapshotId":"2026-10-13T11:19:05.459773+00:00","completedAt":"2026-10-13T11:26:59.401Z","sourceCount":20,"totalRows":17906804}}