{"data":{"schemaVersion":"realm.mine-profile.v1","generatedAt":"2026-10-13T11:26:59.401Z","identity":{"mine_id":"0405137","name":"PORTABLE PLANT C","status":"Abandoned","status_date":"2002-10-07","mine_type":"Surface","coal_metal":"M","commodity":"Construction Sand and Gravel","state":"CA","county":"Los Angeles","nearest_town":"Canyon Country","operator_id":"L10631","operator_name":"Diversified Materials","controller_id":"M06095","controller_name":"David B  Blomgren","district":"M7","office":"San Bernardino CA Field Office","employees":0,"latitude":null,"longitude":null},"coverage":{"contributingSources":8,"registeredSources":20,"sourceRows":25},"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":"0405137","name":"PORTABLE PLANT C"},"operator":{"type":"operator","id":"L10631","name":"Diversified Materials"},"controller":{"type":"controller","id":"M06095","name":"David B  Blomgren"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M06095","name":"David B  Blomgren  et al"},"object":{"type":"mine","id":"0405137","name":"PORTABLE PLANT C"},"validFrom":"1988-09-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0405137|M06095|1988-09-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L10631","name":"Diversified Materials"},"object":{"type":"mine","id":"0405137","name":"PORTABLE PLANT C"},"validFrom":"1991-03-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0405137|L10631|1991-03-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M06095","name":"David B  Blomgren  et al"},"object":{"type":"operator","id":"L10631","name":"Diversified Materials"},"validFrom":"1991-03-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"0405137","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0405137|L10631|1991-03-01|M06095|1988-09-01|136194"}}],"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":"2002-10-07","lastDate":"2002-10-07","metrics":{},"periods":{},"recentRecords":[]},{"id":"msha-assessed-violations","name":"Assessed Violations","domains":["compliance","legal"],"products":["penalty lifecycle","paid and outstanding amounts","assessment aging"],"rowCount":2,"firstDate":"2001-08-22","lastDate":"2001-08-22","metrics":{"ss":0,"delinquent":2,"recentRows":0,"paidPenalty":110,"proposedPenalty":110,"currentAssessment":110},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"48932","VIOLATION_NO":"7960285","ISSUE_DT":"08/22/2001","CFR_STANDARD_CD":"56.14132(b)(1)(i)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"55.00","CURRENT_ASSESSMENT_AMT":"55.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2001-08-22"},{"SOURCE_ROW_NUMBER":"48931","VIOLATION_NO":"7960284","ISSUE_DT":"08/22/2001","CFR_STANDARD_CD":"56.12008","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"55.00","CURRENT_ASSESSMENT_AMT":"55.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2001-08-22"}]},{"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":"1991-03-01","lastDate":"1991-03-01","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":1,"firstDate":"2001-08-22","lastDate":"2001-08-22","metrics":{"inspectors":1,"recentRows":0,"onSiteHours":11,"inspectionHours":18,"inspectionSamples":0},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"892408","EVENT_NO":"0654338","INSPECTION_BEGIN_DT":"08/22/2001","INSPECTION_END_DT":"08/23/2001","ACTIVITY_CODE":"01","ACTIVITY":"REGULAR INSPECTION","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"18","SUM_TOTAL_ON_SITE_HOURS":"11","sourceDate":"2001-08-22"}]},{"id":"msha-mine-production-quarterly","name":"Mine Employment and Production — Quarterly","domains":["production","safety","compliance"],"products":["production trend","employee hours","rate denominators","seasonality"],"rowCount":14,"firstDate":null,"lastDate":null,"metrics":{},"periods":{"2002-Q4":{"hours":0,"employees":0,"production":0},"2002-Q3":{"hours":855,"employees":3,"production":0},"2002-Q2":{"hours":1352,"employees":5,"production":0},"2002-Q1":{"hours":1014,"employees":3,"production":0},"2001-Q4":{"hours":1530,"employees":6,"production":0},"2001-Q3":{"hours":932,"employees":4,"production":0},"2001-Q2":{"hours":0,"employees":0,"production":0},"2001-Q1":{"hours":0,"employees":0,"production":0},"2000-Q4":{"hours":0,"employees":0,"production":0},"2000-Q3":{"hours":0,"employees":0,"production":0},"2000-Q2":{"hours":1725,"employees":3,"production":0},"2000-Q1":{"hours":1840,"employees":3,"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":{"2000":{"hours":3565,"employees":3,"production":0},"2001":{"hours":2462,"employees":5,"production":0},"2002":{"hours":3221,"employees":4,"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":2,"firstDate":"2001-08-22","lastDate":"2001-08-22","metrics":{"ss":0,"amountDue":110,"contested":0,"amountPaid":110,"recentRows":0,"section104d":0,"unterminated":0,"proposedPenalty":110},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"253602","VIOLATION_NO":"7960285","VIOLATION_ISSUE_DT":"08/22/2001","SIG_SUB":"N","PART_SECTION":"56.14132(b)(1)(i)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"08/23/2001","PROPOSED_PENALTY":"55","AMOUNT_DUE":"55","AMOUNT_PAID":"55","CONTESTED_IND":"N","sourceDate":"2001-08-22"},{"SOURCE_ROW_NUMBER":"253601","VIOLATION_NO":"7960284","VIOLATION_ISSUE_DT":"08/22/2001","SIG_SUB":"N","PART_SECTION":"56.12008","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"08/22/2001","PROPOSED_PENALTY":"55","AMOUNT_DUE":"55","AMOUNT_PAID":"55","CONTESTED_IND":"N","sourceDate":"2001-08-22"}]}],"safety":{"href":"/api/v1/mines/0405137/safety","description":"Full-period safety series, top CFR sections and paginated activity. Requires PostgreSQL."},"silica":{"href":"/api/v1/mines/0405137/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":"Insulation and fittings for power wires and cables.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12008","part":"56","subchapter":"K","subpart":"K","id":"56.12008","citation":"30 CFR 56.12008","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":"0405137","dataSource":"postgres","snapshotId":"2026-10-13T11:19:05.459773+00:00","completedAt":"2026-10-13T11:26:59.401Z","sourceCount":20,"totalRows":17906804}}