{"data":{"schemaVersion":"realm.mine-profile.v1","generatedAt":"2026-10-13T11:26:59.401Z","identity":{"mine_id":"4703133","name":"Plant #48","status":"Abandoned","status_date":"2007-07-23","mine_type":"Surface","coal_metal":"M","commodity":"Construction Sand and Gravel","state":"WI","county":"La Crosse","nearest_town":"Onalaska","operator_id":"L16472","operator_name":"Milestone Materials Division Mathy Construction Co","controller_id":"M00893","controller_name":"Mathy Construction Company","district":"M4","office":"Duluth District","employees":0,"latitude":null,"longitude":null},"coverage":{"contributingSources":8,"registeredSources":20,"sourceRows":87},"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":"4703133","name":"Plant #48"},"operator":{"type":"operator","id":"L16472","name":"Milestone Materials Division Mathy Construction Co"},"controller":{"type":"controller","id":"M00893","name":"Mathy Construction Company"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00893","name":"Mathy Construction Company"},"object":{"type":"mine","id":"4703133","name":"Plant #48"},"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":"4703133|M00893|1950-01-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L16472","name":"Milestone Materials Division Mathy Construction Co"},"object":{"type":"mine","id":"4703133","name":"Plant #48"},"validFrom":"1998-04-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4703133|L16472|1998-04-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00893","name":"Mathy Construction Company"},"object":{"type":"operator","id":"L16472","name":"Milestone Materials Division Mathy Construction Co"},"validFrom":"1998-04-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"4703133","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4703133|L16472|1998-04-01|M00893|1950-01-01|115734"}}],"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":"2007-07-23","lastDate":"2007-07-23","metrics":{},"periods":{},"recentRecords":[]},{"id":"msha-assessed-violations","name":"Assessed Violations","domains":["compliance","legal"],"products":["penalty lifecycle","paid and outstanding amounts","assessment aging"],"rowCount":6,"firstDate":"2000-10-03","lastDate":"2006-09-27","metrics":{"ss":1,"delinquent":6,"recentRows":0,"paidPenalty":411,"proposedPenalty":411,"currentAssessment":411},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"353567","VIOLATION_NO":"6165685","ISSUE_DT":"09/27/2006","CFR_STANDARD_CD":"56.14107(a)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"60.00","CURRENT_ASSESSMENT_AMT":"60.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2006-09-27"},{"SOURCE_ROW_NUMBER":"321891","VIOLATION_NO":"6136668","ISSUE_DT":"11/20/2002","CFR_STANDARD_CD":"56.14100(b)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"55.00","CURRENT_ASSESSMENT_AMT":"55.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2002-11-20"},{"SOURCE_ROW_NUMBER":"148406","VIOLATION_NO":"6135516","ISSUE_DT":"11/29/2001","CFR_STANDARD_CD":"56.18002(b)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"55.00","CURRENT_ASSESSMENT_AMT":"55.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2001-11-29"},{"SOURCE_ROW_NUMBER":"148405","VIOLATION_NO":"6135515","ISSUE_DT":"11/29/2001","CFR_STANDARD_CD":"56.14107(a)","SIG_SUB_IND":"Y","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"131.00","CURRENT_ASSESSMENT_AMT":"131.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2001-11-29"},{"SOURCE_ROW_NUMBER":"88703","VIOLATION_NO":"7838270","ISSUE_DT":"10/03/2000","CFR_STANDARD_CD":"56.14100(d)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"55.00","CURRENT_ASSESSMENT_AMT":"55.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2000-10-03"},{"SOURCE_ROW_NUMBER":"88702","VIOLATION_NO":"7838269","ISSUE_DT":"10/03/2000","CFR_STANDARD_CD":"56.14132(a)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"55.00","CURRENT_ASSESSMENT_AMT":"55.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2000-10-03"}]},{"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":"1998-04-01","lastDate":"1998-04-01","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":7,"firstDate":"2000-10-03","lastDate":"2006-09-27","metrics":{"inspectors":9,"recentRows":0,"onSiteHours":19,"inspectionHours":43,"inspectionSamples":0},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"237440","EVENT_NO":"0992144","INSPECTION_BEGIN_DT":"09/27/2006","INSPECTION_END_DT":"09/27/2006","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"8","SUM_TOTAL_ON_SITE_HOURS":"3","sourceDate":"2006-09-27"},{"SOURCE_ROW_NUMBER":"1641","EVENT_NO":"0978315","INSPECTION_BEGIN_DT":"10/13/2004","INSPECTION_END_DT":"10/13/2004","ACTIVITY_CODE":"01","ACTIVITY":"REGULAR INSPECTION","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"6","SUM_TOTAL_ON_SITE_HOURS":"2","sourceDate":"2004-10-13"},{"SOURCE_ROW_NUMBER":"24219","EVENT_NO":"0968413","INSPECTION_BEGIN_DT":"10/16/2003","INSPECTION_END_DT":"10/16/2003","ACTIVITY_CODE":"01","ACTIVITY":"REGULAR INSPECTION","NBR_INSPECTOR":"2","SUM_TOTAL_INSP_HOURS":"8","SUM_TOTAL_ON_SITE_HOURS":"2","sourceDate":"2003-10-16"},{"SOURCE_ROW_NUMBER":"758262","EVENT_NO":"0969444","INSPECTION_BEGIN_DT":"11/20/2002","INSPECTION_END_DT":"11/20/2002","ACTIVITY_CODE":"01","ACTIVITY":"REGULAR INSPECTION","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"5","SUM_TOTAL_ON_SITE_HOURS":"2","sourceDate":"2002-11-20"},{"SOURCE_ROW_NUMBER":"352039","EVENT_NO":"0969255","INSPECTION_BEGIN_DT":"10/17/2002","INSPECTION_END_DT":"10/17/2002","ACTIVITY_CODE":"46","ACTIVITY":"SPECIAL ENFORCEMENT 4","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"2","SUM_TOTAL_ON_SITE_HOURS":"1","sourceDate":"2002-10-17"},{"SOURCE_ROW_NUMBER":"568124","EVENT_NO":"0813192","INSPECTION_BEGIN_DT":"11/29/2001","INSPECTION_END_DT":"11/29/2001","ACTIVITY_CODE":"01","ACTIVITY":"REGULAR INSPECTION","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"8","SUM_TOTAL_ON_SITE_HOURS":"5","sourceDate":"2001-11-29"},{"SOURCE_ROW_NUMBER":"101561","EVENT_NO":"0722539","INSPECTION_BEGIN_DT":"10/03/2000","INSPECTION_END_DT":"10/05/2000","ACTIVITY_CODE":"01","ACTIVITY":"REGULAR INSPECTION","NBR_INSPECTOR":"2","SUM_TOTAL_INSP_HOURS":"6","SUM_TOTAL_ON_SITE_HOURS":"4","sourceDate":"2000-10-03"}]},{"id":"msha-mine-production-quarterly","name":"Mine Employment and Production — Quarterly","domains":["production","safety","compliance"],"products":["production trend","employee hours","rate denominators","seasonality"],"rowCount":52,"firstDate":null,"lastDate":null,"metrics":{},"periods":{"2007-Q2":{"hours":1,"employees":1,"production":0},"2007-Q1":{"hours":1,"employees":1,"production":0},"2006-Q4":{"hours":1,"employees":1,"production":0},"2006-Q3":{"hours":575,"employees":1,"production":0},"2006-Q2":{"hours":338,"employees":1,"production":0},"2006-Q1":{"hours":1,"employees":1,"production":0},"2005-Q4":{"hours":873,"employees":1,"production":0},"2005-Q3":{"hours":2009,"employees":3,"production":0},"2005-Q2":{"hours":1124,"employees":2,"production":0},"2005-Q1":{"hours":1,"employees":1,"production":0},"2004-Q4":{"hours":636,"employees":1,"production":0},"2004-Q3":{"hours":314,"employees":1,"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":13,"firstDate":null,"lastDate":null,"metrics":{},"periods":{"2000":{"hours":2276,"employees":2,"production":0},"2001":{"hours":3844,"employees":2,"production":0},"2002":{"hours":965,"employees":2,"production":0},"2003":{"hours":3189,"employees":2,"production":0},"2004":{"hours":1261,"employees":2,"production":0},"2005":{"hours":4007,"employees":3,"production":0},"2006":{"hours":915,"employees":2,"production":0},"2007":{"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":[]},{"id":"msha-violations","name":"Violations","domains":["compliance","safety","legal"],"products":["citation and order record","condition text","Title 30 linkage","abatement patterns"],"rowCount":6,"firstDate":"2000-10-03","lastDate":"2006-09-27","metrics":{"ss":1,"amountDue":411,"contested":0,"amountPaid":411,"recentRows":0,"section104d":0,"unterminated":0,"proposedPenalty":411},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"3020153","VIOLATION_NO":"6165685","VIOLATION_ISSUE_DT":"09/27/2006","SIG_SUB":"N","PART_SECTION":"56.14107(a)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"Permanent","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"09/27/2006","PROPOSED_PENALTY":"60","AMOUNT_DUE":"60","AMOUNT_PAID":"60","CONTESTED_IND":"N","sourceDate":"2006-09-27"},{"SOURCE_ROW_NUMBER":"3020156","VIOLATION_NO":"6136668","VIOLATION_ISSUE_DT":"11/20/2002","SIG_SUB":"N","PART_SECTION":"56.14100(b)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"11/20/2002","PROPOSED_PENALTY":"55","AMOUNT_DUE":"55","AMOUNT_PAID":"55","CONTESTED_IND":"N","sourceDate":"2002-11-20"},{"SOURCE_ROW_NUMBER":"3020158","VIOLATION_NO":"6135516","VIOLATION_ISSUE_DT":"11/29/2001","SIG_SUB":"N","PART_SECTION":"56.18002(b)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"NoLikelihood","INJ_ILLNESS":"NoLostDays","NO_AFFECTED":"0","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"11/29/2001","PROPOSED_PENALTY":"55","AMOUNT_DUE":"55","AMOUNT_PAID":"55","CONTESTED_IND":"N","sourceDate":"2001-11-29"},{"SOURCE_ROW_NUMBER":"3020157","VIOLATION_NO":"6135515","VIOLATION_ISSUE_DT":"11/29/2001","SIG_SUB":"Y","PART_SECTION":"56.14107(a)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Reasonably","INJ_ILLNESS":"Permanent","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"11/29/2001","PROPOSED_PENALTY":"131","AMOUNT_DUE":"131","AMOUNT_PAID":"131","CONTESTED_IND":"N","sourceDate":"2001-11-29"},{"SOURCE_ROW_NUMBER":"3020155","VIOLATION_NO":"7838270","VIOLATION_ISSUE_DT":"10/03/2000","SIG_SUB":"N","PART_SECTION":"56.14100(d)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"NoLikelihood","INJ_ILLNESS":"NoLostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"10/03/2000","PROPOSED_PENALTY":"55","AMOUNT_DUE":"55","AMOUNT_PAID":"55","CONTESTED_IND":"N","sourceDate":"2000-10-03"},{"SOURCE_ROW_NUMBER":"3020154","VIOLATION_NO":"7838269","VIOLATION_ISSUE_DT":"10/03/2000","SIG_SUB":"N","PART_SECTION":"56.14132(a)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"10/03/2000","PROPOSED_PENALTY":"55","AMOUNT_DUE":"55","AMOUNT_PAID":"55","CONTESTED_IND":"N","sourceDate":"2000-10-03"}]}],"safety":{"href":"/api/v1/mines/4703133/safety","description":"Full-period safety series, top CFR sections and paginated activity. Requires PostgreSQL."},"silica":{"href":"/api/v1/mines/4703133/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":"Moving machine parts.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14107","part":"56","subchapter":"K","subpart":"M","id":"56.14107","citation":"30 CFR 56.14107","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":2},{"chapter":"I","heading":"Safety defects; examination, correction and records.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14100","part":"56","subchapter":"K","subpart":"M","id":"56.14100","citation":"30 CFR 56.14100","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":2},{"chapter":"I","heading":"Examination of working places.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-Q/section-56.18002","part":"56","subchapter":"K","subpart":"Q","id":"56.18002","citation":"30 CFR 56.18002","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":"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}],"fullCorpus":"/data/title30-sections.json"}}},"meta":{"representation":"json","mineId":"4703133","dataSource":"postgres","snapshotId":"2026-10-13T11:19:05.459773+00:00","completedAt":"2026-10-13T11:26:59.401Z","sourceCount":20,"totalRows":17906804}}