{"data":{"schemaVersion":"realm.mine-profile.v1","generatedAt":"2026-10-13T11:26:59.401Z","identity":{"mine_id":"4501052","name":"Section 31 Mine","status":"Abandoned","status_date":"2010-07-19","mine_type":"Surface","coal_metal":"M","commodity":"Common Clays NEC","state":"WA","county":"King","nearest_town":"Newcastle","operator_id":"L00311","operator_name":"Mutual Materials Company","controller_id":"M00250","controller_name":"Mutual Materials Company","district":"M7","office":"Kent WA Field Office","employees":0,"latitude":47.539444,"longitude":-122.118333},"coverage":{"contributingSources":11,"registeredSources":20,"sourceRows":163},"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":"4501052","name":"Section 31 Mine"},"operator":{"type":"operator","id":"L00311","name":"Mutual Materials Company"},"controller":{"type":"controller","id":"M00250","name":"Mutual Materials Company"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L00311","name":"Mutual Materials Company"},"object":{"type":"mine","id":"4501052","name":"Section 31 Mine"},"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":"4501052|L00311|1950-01-01|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00250","name":"Mutual Materials Company"},"object":{"type":"mine","id":"4501052","name":"Section 31 Mine"},"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":"4501052|M00250|1950-01-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00250","name":"Mutual Materials Company"},"object":{"type":"operator","id":"L00311","name":"Mutual Materials Company"},"validFrom":"1950-01-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"4501052","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4501052|L00311|1950-01-01|M00250|1950-01-01|108185"}}],"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":"2010-07-19","lastDate":"2010-07-19","metrics":{},"periods":{},"recentRecords":[]},{"id":"msha-assessed-violations","name":"Assessed Violations","domains":["compliance","legal"],"products":["penalty lifecycle","paid and outstanding amounts","assessment aging"],"rowCount":1,"firstDate":"2003-06-04","lastDate":"2003-06-04","metrics":{"ss":0,"delinquent":1,"recentRows":0,"paidPenalty":60,"proposedPenalty":60,"currentAssessment":60},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"547169","VIOLATION_NO":"6350624","ISSUE_DT":"06/04/2003","CFR_STANDARD_CD":"56.20008(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":"2003-06-04"}]},{"id":"msha-contractor-production-quarterly","name":"Contractor Employment and Production — Quarterly","domains":["contractors","production","safety"],"products":["contractor exposure denominator","productivity","presence windows"],"rowCount":63,"firstDate":null,"lastDate":null,"metrics":{"linkedContractors":1,"notMineAttributable":1},"periods":{},"recentRecords":[]},{"id":"msha-contractor-production-yearly","name":"Contractor Employment and Production — Yearly","domains":["contractors","production","safety"],"products":["long-run contractor trend","annual denominator reconciliation"],"rowCount":16,"firstDate":null,"lastDate":null,"metrics":{"linkedContractors":1,"notMineAttributable":1},"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":"1950-01-01","lastDate":"1950-01-01","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":"2003-06-04","lastDate":"2009-05-27","metrics":{"inspectors":8,"recentRows":0,"onSiteHours":46.5,"inspectionHours":72,"inspectionSamples":0},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"719023","EVENT_NO":"1144611","INSPECTION_BEGIN_DT":"05/27/2009","INSPECTION_END_DT":"05/27/2009","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"13","SUM_TOTAL_ON_SITE_HOURS":"9.5","sourceDate":"2009-05-27"},{"SOURCE_ROW_NUMBER":"334454","EVENT_NO":"1134866","INSPECTION_BEGIN_DT":"05/06/2008","INSPECTION_END_DT":"05/07/2008","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"10","SUM_TOTAL_ON_SITE_HOURS":"5","sourceDate":"2008-05-06"},{"SOURCE_ROW_NUMBER":"1143068","EVENT_NO":"1131703","INSPECTION_BEGIN_DT":"07/11/2006","INSPECTION_END_DT":"07/11/2006","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"5","SUM_TOTAL_ON_SITE_HOURS":"2","sourceDate":"2006-07-11"},{"SOURCE_ROW_NUMBER":"888340","EVENT_NO":"1123525","INSPECTION_BEGIN_DT":"05/10/2005","INSPECTION_END_DT":"05/11/2005","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"21","SUM_TOTAL_ON_SITE_HOURS":"15","sourceDate":"2005-05-10"},{"SOURCE_ROW_NUMBER":"729372","EVENT_NO":"1123034","INSPECTION_BEGIN_DT":"09/16/2004","INSPECTION_END_DT":"09/16/2004","ACTIVITY_CODE":"01","ACTIVITY":"REGULAR INSPECTION","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"5","SUM_TOTAL_ON_SITE_HOURS":"3","sourceDate":"2004-09-16"},{"SOURCE_ROW_NUMBER":"425864","EVENT_NO":"1123009","INSPECTION_BEGIN_DT":"06/15/2004","INSPECTION_END_DT":"06/15/2004","ACTIVITY_CODE":"10","ACTIVITY":"ATTEMPTED INSPECTION","NBR_INSPECTOR":"2","SUM_TOTAL_INSP_HOURS":"7","SUM_TOTAL_ON_SITE_HOURS":"3","sourceDate":"2004-06-15"},{"SOURCE_ROW_NUMBER":"263861","EVENT_NO":"1116474","INSPECTION_BEGIN_DT":"06/04/2003","INSPECTION_END_DT":"06/06/2003","ACTIVITY_CODE":"01","ACTIVITY":"REGULAR INSPECTION","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"11","SUM_TOTAL_ON_SITE_HOURS":"9","sourceDate":"2003-06-04"}]},{"id":"msha-mine-production-quarterly","name":"Mine Employment and Production — Quarterly","domains":["production","safety","compliance"],"products":["production trend","employee hours","rate denominators","seasonality"],"rowCount":59,"firstDate":null,"lastDate":null,"metrics":{},"periods":{"2010-Q3":{"hours":19,"employees":1,"production":0},"2010-Q2":{"hours":16,"employees":1,"production":0},"2010-Q1":{"hours":30,"employees":1,"production":0},"2009-Q4":{"hours":28,"employees":1,"production":0},"2009-Q3":{"hours":26,"employees":1,"production":0},"2009-Q2":{"hours":42,"employees":1,"production":0},"2009-Q1":{"hours":20,"employees":1,"production":0},"2008-Q4":{"hours":20,"employees":1,"production":0},"2008-Q3":{"hours":46,"employees":1,"production":0},"2008-Q2":{"hours":72,"employees":1,"production":0},"2008-Q1":{"hours":32,"employees":1,"production":0},"2007-Q4":{"hours":5,"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":11,"firstDate":null,"lastDate":null,"metrics":{},"periods":{"2003":{"hours":812,"employees":6,"production":0},"2004":{"hours":96,"employees":1,"production":0},"2005":{"hours":350,"employees":3,"production":0},"2006":{"hours":256,"employees":1,"production":0},"2007":{"hours":575,"employees":3,"production":0},"2008":{"hours":170,"employees":1,"production":0},"2009":{"hours":116,"employees":1,"production":0},"2010":{"hours":65,"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":"2005-05-11","lastDate":"2009-05-27","metrics":{"recentRows":0,"actionTaken":2,"maxExposureRatio":0.21,"overExposureLimit":0,"exposureRatioTotal":0.33},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"121333","EVENT_NO":"1144611","SAMPLE_NO":"000000200905487100","SAMPLE_DATE":"05/27/2009","CONTAMINANT_DESC":"Quartz, respirable, >1% Qtz","CONCENTRATION":"0000.12","EXPOSURE_LIMIT":"0001.04","C_OVER_E":"00.12","JOB_CD_DESC":"Bulldozer Operator","ACTION_TAKEN_DESC":"NO ACTION","sourceDate":"2009-05-27"},{"SOURCE_ROW_NUMBER":"49279","EVENT_NO":"1123525","SAMPLE_NO":"000000200504440400","SAMPLE_DATE":"05/11/2005","CONTAMINANT_DESC":"Quartz, respirable, >1% Qtz","CONCENTRATION":"0000.17","EXPOSURE_LIMIT":"0000.80","C_OVER_E":"00.21","JOB_CD_DESC":"Bulldozer Operator","ACTION_TAKEN_DESC":"NO ACTION","sourceDate":"2005-05-11"}]},{"id":"msha-violations","name":"Violations","domains":["compliance","safety","legal"],"products":["citation and order record","condition text","Title 30 linkage","abatement patterns"],"rowCount":1,"firstDate":"2003-06-04","lastDate":"2003-06-04","metrics":{"ss":0,"amountDue":60,"contested":0,"amountPaid":60,"recentRows":0,"section104d":0,"unterminated":0,"proposedPenalty":60},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"2454879","VIOLATION_NO":"6350624","VIOLATION_ISSUE_DT":"06/04/2003","SIG_SUB":"N","PART_SECTION":"56.20008(a)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"LostDays","NO_AFFECTED":"4","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"06/06/2003","PROPOSED_PENALTY":"60","AMOUNT_DUE":"60","AMOUNT_PAID":"60","CONTESTED_IND":"N","sourceDate":"2003-06-04"}]}],"safety":{"href":"/api/v1/mines/4501052/safety","description":"Full-period safety series, top CFR sections and paginated activity. Requires PostgreSQL."},"silica":{"href":"/api/v1/mines/4501052/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":"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":"4501052","dataSource":"postgres","snapshotId":"2026-10-13T11:19:05.459773+00:00","completedAt":"2026-10-13T11:26:59.401Z","sourceCount":20,"totalRows":17906804}}