{"data":{"schemaVersion":"realm.mine-profile.v1","generatedAt":"2026-10-17T06:17:15.228Z","identity":{"mine_id":"2402518","name":"Portable Screener 2","status":"Abandoned","status_date":"2015-06-02","mine_type":"Surface","coal_metal":"M","commodity":"Construction Sand and Gravel","state":"MT","county":"Madison","nearest_town":"Virginia City","operator_id":"L35887","operator_name":"Madison County","controller_id":"M35887","controller_name":"Madison County-MT","district":"M6","office":"Helena MT Field Office","employees":0,"latitude":45.295556,"longitude":-111.934722},"coverage":{"contributingSources":8,"registeredSources":20,"sourceRows":28},"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":"2026-10-17T05:35:58.500035+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":"2402518","name":"Portable Screener 2"},"operator":{"type":"operator","id":"L35887","name":"Madison County"},"controller":{"type":"controller","id":"M35887","name":"Madison County-MT"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-17T05:35:58.500035+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M35887","name":"Madison County-MT"},"object":{"type":"mine","id":"2402518","name":"Portable Screener 2"},"validFrom":"1992-06-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"2402518|M35887|1992-06-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L35887","name":"Madison County"},"object":{"type":"mine","id":"2402518","name":"Portable Screener 2"},"validFrom":"2008-06-24","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"2402518|L35887|2008-06-24|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M35887","name":"Madison County-MT"},"object":{"type":"operator","id":"L35887","name":"Madison County"},"validFrom":"2008-06-24","validTo":null,"current":true,"derived":true,"evidenceMineId":"2402518","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"2402518|L35887|2008-06-24|M35887|1992-06-01|164906"}}],"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":"2015-06-02","lastDate":"2015-06-02","metrics":{},"periods":{},"recentRecords":[]},{"id":"msha-assessed-violations","name":"Assessed Violations","domains":["compliance","legal"],"products":["penalty lifecycle","paid and outstanding amounts","assessment aging"],"rowCount":4,"firstDate":"2009-06-30","lastDate":"2012-10-02","metrics":{"ss":0,"delinquent":4,"recentRows":0,"paidPenalty":400,"proposedPenalty":400,"currentAssessment":400},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"528888","VIOLATION_NO":"8589135","ISSUE_DT":"10/02/2012","CFR_STANDARD_CD":"56.14132(a)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"100.00","CURRENT_ASSESSMENT_AMT":"100.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2012-10-02"},{"SOURCE_ROW_NUMBER":"528729","VIOLATION_NO":"8589029","ISSUE_DT":"03/22/2012","CFR_STANDARD_CD":"56.1000","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"100.00","CURRENT_ASSESSMENT_AMT":"100.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2012-03-22"},{"SOURCE_ROW_NUMBER":"527117","VIOLATION_NO":"6458109","ISSUE_DT":"10/19/2010","CFR_STANDARD_CD":"56.4402","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"100.00","CURRENT_ASSESSMENT_AMT":"100.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2010-10-19"},{"SOURCE_ROW_NUMBER":"525255","VIOLATION_NO":"6451063","ISSUE_DT":"06/30/2009","CFR_STANDARD_CD":"56.20008(a)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"100.00","CURRENT_ASSESSMENT_AMT":"100.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2009-06-30"}]},{"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":"2008-06-24","lastDate":"2008-06-24","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":8,"firstDate":"2008-09-17","lastDate":"2013-10-22","metrics":{"inspectors":8,"recentRows":0,"onSiteHours":36.75,"inspectionHours":82.25,"inspectionSamples":0},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"540997","EVENT_NO":"6614563","INSPECTION_BEGIN_DT":"10/22/2013","INSPECTION_END_DT":"10/23/2013","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"6.5","SUM_TOTAL_ON_SITE_HOURS":"3","sourceDate":"2013-10-22"},{"SOURCE_ROW_NUMBER":"1129826","EVENT_NO":"6557401","INSPECTION_BEGIN_DT":"10/02/2012","INSPECTION_END_DT":"10/02/2012","ACTIVITY_CODE":"E15","ACTIVITY":"Compliance Follow-up Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"2.5","SUM_TOTAL_ON_SITE_HOURS":".5","sourceDate":"2012-10-02"},{"SOURCE_ROW_NUMBER":"220683","EVENT_NO":"1107160","INSPECTION_BEGIN_DT":"10/01/2012","INSPECTION_END_DT":"10/02/2012","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"10.75","SUM_TOTAL_ON_SITE_HOURS":"4.25","sourceDate":"2012-10-01"},{"SOURCE_ROW_NUMBER":"1097566","EVENT_NO":"6557168","INSPECTION_BEGIN_DT":"04/10/2012","INSPECTION_END_DT":"04/11/2012","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"11","SUM_TOTAL_ON_SITE_HOURS":"3","sourceDate":"2012-04-10"},{"SOURCE_ROW_NUMBER":"938719","EVENT_NO":"1107140","INSPECTION_BEGIN_DT":"03/22/2012","INSPECTION_END_DT":"03/22/2012","ACTIVITY_CODE":"E28","ACTIVITY":"Mine Idle Activity","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"7","SUM_TOTAL_ON_SITE_HOURS":"1.5","sourceDate":"2012-03-22"},{"SOURCE_ROW_NUMBER":"976469","EVENT_NO":"1106544","INSPECTION_BEGIN_DT":"10/19/2010","INSPECTION_END_DT":"10/19/2010","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"12.5","SUM_TOTAL_ON_SITE_HOURS":"7","sourceDate":"2010-10-19"},{"SOURCE_ROW_NUMBER":"341739","EVENT_NO":"1105927","INSPECTION_BEGIN_DT":"06/29/2009","INSPECTION_END_DT":"07/01/2009","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"28","SUM_TOTAL_ON_SITE_HOURS":"16","sourceDate":"2009-06-29"},{"SOURCE_ROW_NUMBER":"692781","EVENT_NO":"1106281","INSPECTION_BEGIN_DT":"09/17/2008","INSPECTION_END_DT":"09/17/2008","ACTIVITY_CODE":"E28","ACTIVITY":"Mine Idle Activity","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"4","SUM_TOTAL_ON_SITE_HOURS":"1.5","sourceDate":"2008-09-17"}]},{"id":"msha-mine-production-yearly","name":"Mine Employment and Production — Yearly","domains":["production","safety","compliance"],"products":["annual trend","backfill","quarterly reconciliation"],"rowCount":7,"firstDate":null,"lastDate":null,"metrics":{},"periods":{"2008":{"hours":174,"employees":2,"production":0},"2009":{"hours":472,"employees":2,"production":0},"2010":{"hours":340,"employees":2,"production":0},"2011":{"hours":1008,"employees":2,"production":0},"2012":{"hours":1348,"employees":2,"production":0},"2013":{"hours":772,"employees":2,"production":0},"2014":{"hours":25,"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":[]},{"id":"msha-personal-health-samples","name":"Metal and Nonmetal Personal Health Samples","domains":["health","safety"],"products":["personal exposure trend","occupation patterns","analyte coverage"],"rowCount":2,"firstDate":"2009-07-01","lastDate":"2009-07-01","metrics":{"recentRows":0,"actionTaken":2,"maxExposureRatio":0,"overExposureLimit":0,"exposureRatioTotal":0},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"103989","EVENT_NO":"1105927","SAMPLE_NO":"000000200906449425","SAMPLE_DATE":"07/01/2009","CONTAMINANT_DESC":"Fibers, >5um","CONCENTRATION":"0000.03","EXPOSURE_LIMIT":"0000.00","C_OVER_E":"00.00","JOB_CD_DESC":"Front-end Loader Operator","ACTION_TAKEN_DESC":"NO ACTION","sourceDate":"2009-07-01"},{"SOURCE_ROW_NUMBER":"103840","EVENT_NO":"1105927","SAMPLE_NO":"000000200906448500","SAMPLE_DATE":"07/01/2009","CONTAMINANT_DESC":"Respirable dust, <.1mg","CONCENTRATION":"0000.00","EXPOSURE_LIMIT":"0000.00","C_OVER_E":"00.00","JOB_CD_DESC":"Front-end Loader Operator","ACTION_TAKEN_DESC":"NO ACTION","sourceDate":"2009-07-01"}]},{"id":"msha-violations","name":"Violations","domains":["compliance","safety","legal"],"products":["citation and order record","condition text","Title 30 linkage","abatement patterns"],"rowCount":4,"firstDate":"2009-06-30","lastDate":"2012-10-02","metrics":{"ss":0,"amountDue":400,"contested":0,"amountPaid":400,"recentRows":0,"section104d":0,"unterminated":0,"proposedPenalty":400},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"1486527","VIOLATION_NO":"8589135","VIOLATION_ISSUE_DT":"10/02/2012","SIG_SUB":"N","PART_SECTION":"56.14132(a)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"Fatal","NO_AFFECTED":"1","NEGLIGENCE":"LowNegligence","TERMINATION_DT":"10/02/2012","PROPOSED_PENALTY":"100","AMOUNT_DUE":"100","AMOUNT_PAID":"100","CONTESTED_IND":"N","sourceDate":"2012-10-02"},{"SOURCE_ROW_NUMBER":"1486525","VIOLATION_NO":"8589029","VIOLATION_ISSUE_DT":"03/22/2012","SIG_SUB":"N","PART_SECTION":"56.1000","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"NoLikelihood","INJ_ILLNESS":"NoLostDays","NO_AFFECTED":"0","NEGLIGENCE":"LowNegligence","TERMINATION_DT":"03/23/2012","PROPOSED_PENALTY":"100","AMOUNT_DUE":"100","AMOUNT_PAID":"100","CONTESTED_IND":"N","sourceDate":"2012-03-22"},{"SOURCE_ROW_NUMBER":"1486528","VIOLATION_NO":"6458109","VIOLATION_ISSUE_DT":"10/19/2010","SIG_SUB":"N","PART_SECTION":"56.4402","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"10/19/2010","PROPOSED_PENALTY":"100","AMOUNT_DUE":"100","AMOUNT_PAID":"100","CONTESTED_IND":"N","sourceDate":"2010-10-19"},{"SOURCE_ROW_NUMBER":"1486526","VIOLATION_NO":"6451063","VIOLATION_ISSUE_DT":"06/30/2009","SIG_SUB":"N","PART_SECTION":"56.20008(a)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"NoLostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"07/01/2009","PROPOSED_PENALTY":"100","AMOUNT_DUE":"100","AMOUNT_PAID":"100","CONTESTED_IND":"N","sourceDate":"2009-06-30"}]}],"safety":{"href":"/api/v1/mines/2402518/safety","description":"Full-period safety series, top CFR sections and paginated activity. Requires PostgreSQL."},"silica":{"href":"/api/v1/mines/2402518/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":[{"chapter":"I","heading":"Horns and backup alarms.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14132","part":"56","subchapter":"K","subpart":"M","id":"56.14132","citation":"30 CFR 56.14132","chapterHeading":"CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","subchapterHeading":"SUBCHAPTER K—METAL AND NONMETAL MINE SAFETY AND HEALTH","partHeading":"PART 56—SAFETY AND HEALTH STANDARDS—SURFACE METAL AND NONMETAL MINES","subpartHeading":"","text":null,"occurrenceCount":1},{"chapter":"I","heading":"Notification of commencement of operations and closing of mines.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-A/section-56.1000","part":"56","subchapter":"K","subpart":"A","id":"56.1000","citation":"30 CFR 56.1000","chapterHeading":"CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","subchapterHeading":"SUBCHAPTER K—METAL AND NONMETAL MINE SAFETY AND HEALTH","partHeading":"PART 56—SAFETY AND HEALTH STANDARDS—SURFACE METAL AND NONMETAL MINES","subpartHeading":"","text":null,"occurrenceCount":1},{"chapter":"I","heading":"Safety can use.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4402","part":"56","subchapter":"K","subpart":"C","id":"56.4402","citation":"30 CFR 56.4402","chapterHeading":"CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","subchapterHeading":"SUBCHAPTER K—METAL AND NONMETAL MINE SAFETY AND HEALTH","partHeading":"PART 56—SAFETY AND HEALTH STANDARDS—SURFACE METAL AND NONMETAL MINES","subpartHeading":"","text":null,"occurrenceCount":1},{"chapter":"I","heading":"Toilet facilities.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-S/section-56.20008","part":"56","subchapter":"K","subpart":"S","id":"56.20008","citation":"30 CFR 56.20008","chapterHeading":"CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","subchapterHeading":"SUBCHAPTER K—METAL AND NONMETAL MINE SAFETY AND HEALTH","partHeading":"PART 56—SAFETY AND HEALTH STANDARDS—SURFACE METAL AND NONMETAL MINES","subpartHeading":"","text":null,"occurrenceCount":1}],"fullCorpus":"/data/title30-sections.json"}}},"meta":{"representation":"json","mineId":"2402518","dataSource":"postgres","snapshotId":"2026-10-17T05:35:58.500035+00:00","completedAt":"2026-10-17T06:17:15.228Z","sourceCount":20,"totalRows":15450873}}