{"data":{"schemaVersion":"realm.mine-profile.v1","generatedAt":"2026-10-13T11:26:59.401Z","identity":{"mine_id":"0503570","name":"AURORA PIT S-4","status":"Abandoned","status_date":"2003-03-10","mine_type":"Surface","coal_metal":"M","commodity":"Construction Sand and Gravel","state":"CO","county":"Arapahoe","nearest_town":"PORTABLE","operator_id":"L13289","operator_name":"Rio Grande Company-Sand & Gravel Div","controller_id":"M03524","controller_name":"Rio Grande Company","district":"M6","office":"Denver CO Field Office","employees":0,"latitude":null,"longitude":null},"coverage":{"contributingSources":8,"registeredSources":20,"sourceRows":60},"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":"0503570","name":"AURORA PIT S-4"},"operator":{"type":"operator","id":"L13289","name":"Rio Grande Company-Sand & Gravel Div"},"controller":{"type":"controller","id":"M03524","name":"Rio Grande Company"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M03524","name":"Rio Grande Company"},"object":{"type":"mine","id":"0503570","name":"AURORA PIT S-4"},"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":"0503570|M03524|1950-01-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L13289","name":"Rio Grande Company-Sand & Gravel Div"},"object":{"type":"mine","id":"0503570","name":"AURORA PIT S-4"},"validFrom":"1980-06-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0503570|L13289|1980-06-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M03524","name":"Rio Grande Company"},"object":{"type":"operator","id":"L13289","name":"Rio Grande Company-Sand & Gravel Div"},"validFrom":"1980-06-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"0503570","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0503570|L13289|1980-06-01|M03524|1950-01-01|129248"}}],"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":"2003-03-10","lastDate":"2003-03-10","metrics":{},"periods":{},"recentRecords":[]},{"id":"msha-assessed-violations","name":"Assessed Violations","domains":["compliance","legal"],"products":["penalty lifecycle","paid and outstanding amounts","assessment aging"],"rowCount":14,"firstDate":"2000-02-03","lastDate":"2002-10-09","metrics":{"ss":5,"delinquent":14,"recentRows":0,"paidPenalty":1118,"proposedPenalty":1118,"currentAssessment":1118},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"461130","VIOLATION_NO":"6297519","ISSUE_DT":"10/09/2002","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":"2002-10-09"},{"SOURCE_ROW_NUMBER":"461129","VIOLATION_NO":"6297518","ISSUE_DT":"10/09/2002","CFR_STANDARD_CD":"56.9301","SIG_SUB_IND":"Y","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"69.00","CURRENT_ASSESSMENT_AMT":"69.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2002-10-09"},{"SOURCE_ROW_NUMBER":"461128","VIOLATION_NO":"6297517","ISSUE_DT":"10/09/2002","CFR_STANDARD_CD":"46.3(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":"2002-10-09"},{"SOURCE_ROW_NUMBER":"112390","VIOLATION_NO":"7941994","ISSUE_DT":"04/05/2001","CFR_STANDARD_CD":"56.11001","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"55.00","CURRENT_ASSESSMENT_AMT":"55.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2001-04-05"},{"SOURCE_ROW_NUMBER":"112389","VIOLATION_NO":"7941993","ISSUE_DT":"04/05/2001","CFR_STANDARD_CD":"56.11001","SIG_SUB_IND":"Y","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"150.00","CURRENT_ASSESSMENT_AMT":"150.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2001-04-05"},{"SOURCE_ROW_NUMBER":"112387","VIOLATION_NO":"7941991","ISSUE_DT":"04/05/2001","CFR_STANDARD_CD":"56.14107(a)","SIG_SUB_IND":"Y","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"150.00","CURRENT_ASSESSMENT_AMT":"150.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2001-04-05"},{"SOURCE_ROW_NUMBER":"112388","VIOLATION_NO":"7941992","ISSUE_DT":"04/04/2001","CFR_STANDARD_CD":"56.4104(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":"2001-04-04"},{"SOURCE_ROW_NUMBER":"112386","VIOLATION_NO":"7941990","ISSUE_DT":"04/04/2001","CFR_STANDARD_CD":"56.14107(a)","SIG_SUB_IND":"Y","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"150.00","CURRENT_ASSESSMENT_AMT":"150.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2001-04-04"},{"SOURCE_ROW_NUMBER":"112385","VIOLATION_NO":"7941989","ISSUE_DT":"04/04/2001","CFR_STANDARD_CD":"56.13015(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":"2001-04-04"},{"SOURCE_ROW_NUMBER":"112384","VIOLATION_NO":"7941988","ISSUE_DT":"04/04/2001","CFR_STANDARD_CD":"56.4601","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"55.00","CURRENT_ASSESSMENT_AMT":"55.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2001-04-04"},{"SOURCE_ROW_NUMBER":"112383","VIOLATION_NO":"7941987","ISSUE_DT":"04/04/2001","CFR_STANDARD_CD":"56.18010","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"55.00","CURRENT_ASSESSMENT_AMT":"55.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2001-04-04"},{"SOURCE_ROW_NUMBER":"112382","VIOLATION_NO":"7941986","ISSUE_DT":"04/04/2001","CFR_STANDARD_CD":"56.12028","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"55.00","CURRENT_ASSESSMENT_AMT":"55.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2001-04-04"}]},{"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":"1980-06-01","lastDate":"1980-06-01","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":9,"firstDate":"2000-02-03","lastDate":"2003-03-07","metrics":{"inspectors":9,"recentRows":0,"onSiteHours":45,"inspectionHours":80,"inspectionSamples":0},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"827458","EVENT_NO":"1063610","INSPECTION_BEGIN_DT":"03/07/2003","INSPECTION_END_DT":"03/07/2003","ACTIVITY_CODE":"02","ACTIVITY":"COMPLIANCE FOLLOW-UP INSPECTION","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"3","SUM_TOTAL_ON_SITE_HOURS":"1","sourceDate":"2003-03-07"},{"SOURCE_ROW_NUMBER":"1068533","EVENT_NO":"1063609","INSPECTION_BEGIN_DT":"02/06/2003","INSPECTION_END_DT":"02/06/2003","ACTIVITY_CODE":"02","ACTIVITY":"COMPLIANCE FOLLOW-UP INSPECTION","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"3","SUM_TOTAL_ON_SITE_HOURS":"1","sourceDate":"2003-02-06"},{"SOURCE_ROW_NUMBER":"161367","EVENT_NO":"1063600","INSPECTION_BEGIN_DT":"12/12/2002","INSPECTION_END_DT":"12/13/2002","ACTIVITY_CODE":"02","ACTIVITY":"COMPLIANCE FOLLOW-UP INSPECTION","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"6","SUM_TOTAL_ON_SITE_HOURS":"3","sourceDate":"2002-12-12"},{"SOURCE_ROW_NUMBER":"1033474","EVENT_NO":"1063566","INSPECTION_BEGIN_DT":"10/09/2002","INSPECTION_END_DT":"10/10/2002","ACTIVITY_CODE":"01","ACTIVITY":"REGULAR INSPECTION","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"14","SUM_TOTAL_ON_SITE_HOURS":"12","sourceDate":"2002-10-09"},{"SOURCE_ROW_NUMBER":"982771","EVENT_NO":"0765448","INSPECTION_BEGIN_DT":"07/05/2001","INSPECTION_END_DT":"07/05/2001","ACTIVITY_CODE":"02","ACTIVITY":"COMPLIANCE FOLLOW-UP INSPECTION","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"4","SUM_TOTAL_ON_SITE_HOURS":"1","sourceDate":"2001-07-05"},{"SOURCE_ROW_NUMBER":"59399","EVENT_NO":"0765437","INSPECTION_BEGIN_DT":"05/08/2001","INSPECTION_END_DT":"05/08/2001","ACTIVITY_CODE":"02","ACTIVITY":"COMPLIANCE FOLLOW-UP INSPECTION","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"12","SUM_TOTAL_ON_SITE_HOURS":"6","sourceDate":"2001-05-08"},{"SOURCE_ROW_NUMBER":"381520","EVENT_NO":"0765430","INSPECTION_BEGIN_DT":"04/04/2001","INSPECTION_END_DT":"04/06/2001","ACTIVITY_CODE":"01","ACTIVITY":"REGULAR INSPECTION","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"28","SUM_TOTAL_ON_SITE_HOURS":"16","sourceDate":"2001-04-04"},{"SOURCE_ROW_NUMBER":"715536","EVENT_NO":"0464028","INSPECTION_BEGIN_DT":"05/18/2000","INSPECTION_END_DT":"05/18/2000","ACTIVITY_CODE":"02","ACTIVITY":"COMPLIANCE FOLLOW-UP INSPECTION","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"2","SUM_TOTAL_ON_SITE_HOURS":"1","sourceDate":"2000-05-18"},{"SOURCE_ROW_NUMBER":"439181","EVENT_NO":"0463994","INSPECTION_BEGIN_DT":"02/03/2000","INSPECTION_END_DT":"02/03/2000","ACTIVITY_CODE":"01","ACTIVITY":"REGULAR INSPECTION","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"8","SUM_TOTAL_ON_SITE_HOURS":"4","sourceDate":"2000-02-03"}]},{"id":"msha-mine-production-quarterly","name":"Mine Employment and Production — Quarterly","domains":["production","safety","compliance"],"products":["production trend","employee hours","rate denominators","seasonality"],"rowCount":16,"firstDate":null,"lastDate":null,"metrics":{},"periods":{"2003-Q4":{"hours":0,"employees":0,"production":0},"2003-Q3":{"hours":0,"employees":0,"production":0},"2003-Q2":{"hours":1397,"employees":3,"production":0},"2003-Q1":{"hours":1489,"employees":3,"production":0},"2002-Q4":{"hours":1912,"employees":3,"production":0},"2002-Q3":{"hours":1536,"employees":3,"production":0},"2002-Q2":{"hours":1153,"employees":2,"production":0},"2002-Q1":{"hours":2544,"employees":2,"production":0},"2001-Q4":{"hours":1158,"employees":2,"production":0},"2001-Q3":{"hours":1098,"employees":2,"production":0},"2001-Q2":{"hours":1118,"employees":2,"production":0},"2001-Q1":{"hours":1206,"employees":2,"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":{"2000":{"hours":7345,"employees":4,"production":0},"2001":{"hours":4580,"employees":2,"production":0},"2002":{"hours":7145,"employees":3,"production":0},"2003":{"hours":2886,"employees":3,"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":14,"firstDate":"2000-02-03","lastDate":"2002-10-09","metrics":{"ss":5,"amountDue":1118,"contested":0,"amountPaid":1118,"recentRows":0,"section104d":0,"unterminated":0,"proposedPenalty":1118},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"299719","VIOLATION_NO":"6297519","VIOLATION_ISSUE_DT":"10/09/2002","SIG_SUB":"N","PART_SECTION":"56.14100(b)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"NoLikelihood","INJ_ILLNESS":"NoLostDays","NO_AFFECTED":"0","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"12/12/2002","PROPOSED_PENALTY":"55","AMOUNT_DUE":"55","AMOUNT_PAID":"55","CONTESTED_IND":"N","sourceDate":"2002-10-09"},{"SOURCE_ROW_NUMBER":"299718","VIOLATION_NO":"6297518","VIOLATION_ISSUE_DT":"10/09/2002","SIG_SUB":"Y","PART_SECTION":"56.9301","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"NoLikelihood","INJ_ILLNESS":"NoLostDays","NO_AFFECTED":"0","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"12/12/2002","PROPOSED_PENALTY":"69","AMOUNT_DUE":"69","AMOUNT_PAID":"69","CONTESTED_IND":"N","sourceDate":"2002-10-09"},{"SOURCE_ROW_NUMBER":"299717","VIOLATION_NO":"6297517","VIOLATION_ISSUE_DT":"10/09/2002","SIG_SUB":"N","PART_SECTION":"46.3(a)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"NoLikelihood","INJ_ILLNESS":"NoLostDays","NO_AFFECTED":"0","NEGLIGENCE":"LowNegligence","TERMINATION_DT":"03/07/2003","PROPOSED_PENALTY":"55","AMOUNT_DUE":"55","AMOUNT_PAID":"55","CONTESTED_IND":"N","sourceDate":"2002-10-09"},{"SOURCE_ROW_NUMBER":"299716","VIOLATION_NO":"7941994","VIOLATION_ISSUE_DT":"04/05/2001","SIG_SUB":"N","PART_SECTION":"56.11001","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"05/08/2001","PROPOSED_PENALTY":"55","AMOUNT_DUE":"55","AMOUNT_PAID":"55","CONTESTED_IND":"N","sourceDate":"2001-04-05"},{"SOURCE_ROW_NUMBER":"299715","VIOLATION_NO":"7941993","VIOLATION_ISSUE_DT":"04/05/2001","SIG_SUB":"Y","PART_SECTION":"56.11001","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Reasonably","INJ_ILLNESS":"Fatal","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"07/05/2001","PROPOSED_PENALTY":"150","AMOUNT_DUE":"150","AMOUNT_PAID":"150","CONTESTED_IND":"N","sourceDate":"2001-04-05"},{"SOURCE_ROW_NUMBER":"299713","VIOLATION_NO":"7941991","VIOLATION_ISSUE_DT":"04/05/2001","SIG_SUB":"Y","PART_SECTION":"56.14107(a)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Reasonably","INJ_ILLNESS":"Fatal","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"05/08/2001","PROPOSED_PENALTY":"150","AMOUNT_DUE":"150","AMOUNT_PAID":"150","CONTESTED_IND":"N","sourceDate":"2001-04-05"},{"SOURCE_ROW_NUMBER":"299714","VIOLATION_NO":"7941992","VIOLATION_ISSUE_DT":"04/04/2001","SIG_SUB":"N","PART_SECTION":"56.4104(a)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"05/08/2001","PROPOSED_PENALTY":"55","AMOUNT_DUE":"55","AMOUNT_PAID":"55","CONTESTED_IND":"N","sourceDate":"2001-04-04"},{"SOURCE_ROW_NUMBER":"299712","VIOLATION_NO":"7941990","VIOLATION_ISSUE_DT":"04/04/2001","SIG_SUB":"Y","PART_SECTION":"56.14107(a)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Reasonably","INJ_ILLNESS":"Fatal","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"05/08/2001","PROPOSED_PENALTY":"150","AMOUNT_DUE":"150","AMOUNT_PAID":"150","CONTESTED_IND":"N","sourceDate":"2001-04-04"},{"SOURCE_ROW_NUMBER":"299711","VIOLATION_NO":"7941989","VIOLATION_ISSUE_DT":"04/04/2001","SIG_SUB":"N","PART_SECTION":"56.13015(a)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"NoLikelihood","INJ_ILLNESS":"NoLostDays","NO_AFFECTED":"0","NEGLIGENCE":"LowNegligence","TERMINATION_DT":"06/04/2001","PROPOSED_PENALTY":"55","AMOUNT_DUE":"55","AMOUNT_PAID":"55","CONTESTED_IND":"N","sourceDate":"2001-04-04"},{"SOURCE_ROW_NUMBER":"299710","VIOLATION_NO":"7941988","VIOLATION_ISSUE_DT":"04/04/2001","SIG_SUB":"N","PART_SECTION":"56.4601","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"Fatal","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"04/04/2001","PROPOSED_PENALTY":"55","AMOUNT_DUE":"55","AMOUNT_PAID":"55","CONTESTED_IND":"N","sourceDate":"2001-04-04"},{"SOURCE_ROW_NUMBER":"299709","VIOLATION_NO":"7941987","VIOLATION_ISSUE_DT":"04/04/2001","SIG_SUB":"N","PART_SECTION":"56.18010","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"NoLikelihood","INJ_ILLNESS":"NoLostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"06/04/2001","PROPOSED_PENALTY":"55","AMOUNT_DUE":"55","AMOUNT_PAID":"55","CONTESTED_IND":"N","sourceDate":"2001-04-04"},{"SOURCE_ROW_NUMBER":"299708","VIOLATION_NO":"7941986","VIOLATION_ISSUE_DT":"04/04/2001","SIG_SUB":"N","PART_SECTION":"56.12028","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"NoLikelihood","INJ_ILLNESS":"NoLostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"07/05/2001","PROPOSED_PENALTY":"55","AMOUNT_DUE":"55","AMOUNT_PAID":"55","CONTESTED_IND":"N","sourceDate":"2001-04-04"}]}],"safety":{"href":"/api/v1/mines/0503570/safety","description":"Full-period safety series, top CFR sections and paginated activity. Requires PostgreSQL."},"silica":{"href":"/api/v1/mines/0503570/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":"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":1},{"chapter":"I","heading":"Dump site restraints.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-H/section-56.9301","part":"56","subchapter":"K","subpart":"H","id":"56.9301","citation":"30 CFR 56.9301","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":"Training plans.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-46/section-46.3","part":"46","subchapter":"H","subpart":"","id":"46.3","citation":"30 CFR 46.3","chapterHeading":"CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","subchapterHeading":"SUBCHAPTER H—EDUCATION AND TRAINING","partHeading":"PART 46—TRAINING AND RETRAINING OF MINERS ENGAGED IN SHELL DREDGING OR EMPLOYED AT SAND, GRAVEL, SURFACE STONE, SURFACE CLAY, COLLOIDAL PHOSPHATE, OR SURFACE LIMESTONE MINES.","subpartHeading":"","text":null,"occurrenceCount":1},{"chapter":"I","heading":"Safe access.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-J/section-56.11001","part":"56","subchapter":"K","subpart":"J","id":"56.11001","citation":"30 CFR 56.11001","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":"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":"Combustible waste.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4104","part":"56","subchapter":"K","subpart":"C","id":"56.4104","citation":"30 CFR 56.4104","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":"Inspection of compressed-air receivers and other unfired pressure vessels.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-L/section-56.13015","part":"56","subchapter":"K","subpart":"L","id":"56.13015","citation":"30 CFR 56.13015","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":"Oxygen cylinder storage.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4601","part":"56","subchapter":"K","subpart":"C","id":"56.4601","citation":"30 CFR 56.4601","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":"First aid.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-Q/section-56.18010","part":"56","subchapter":"K","subpart":"Q","id":"56.18010","citation":"30 CFR 56.18010","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":"Testing grounding systems.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12028","part":"56","subchapter":"K","subpart":"K","id":"56.12028","citation":"30 CFR 56.12028","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":"0503570","dataSource":"postgres","snapshotId":"2026-10-13T11:19:05.459773+00:00","completedAt":"2026-10-13T11:26:59.401Z","sourceCount":20,"totalRows":17906804}}