{"data":{"schemaVersion":"realm.mine-profile.v1","generatedAt":"2026-10-13T11:26:59.401Z","identity":{"mine_id":"2402765","name":"Clarks Fork Quarry","status":"Intermittent","status_date":"2025-05-16","mine_type":"Surface","coal_metal":"M","commodity":"Dimension Stone NEC","state":"MT","county":"Yellowstone","nearest_town":"Laurel","operator_id":"0177514","operator_name":"Huppert Brothers Construction Inc.","controller_id":"0163263","controller_name":"Fred  Huppert","district":"C09","office":"Gillette WY Field Office","employees":5,"latitude":45.667778,"longitude":-108.775833},"coverage":{"contributingSources":9,"registeredSources":20,"sourceRows":70},"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":"2402765","name":"Clarks Fork Quarry"},"operator":{"type":"operator","id":"0177514","name":"Huppert Brothers Construction Inc."},"controller":{"type":"controller","id":"0163263","name":"Fred  Huppert"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"0177514","name":"Huppert Brothers Construction Inc."},"object":{"type":"mine","id":"2402765","name":"Clarks Fork Quarry"},"validFrom":"2021-07-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2402765|0177514|2021-07-01|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0163263","name":"Fred  Huppert"},"object":{"type":"mine","id":"2402765","name":"Clarks Fork Quarry"},"validFrom":"2021-07-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2402765|0163263|2021-07-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0163263","name":"Fred  Huppert"},"object":{"type":"operator","id":"0177514","name":"Huppert Brothers Construction Inc."},"validFrom":"2021-07-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"2402765","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2402765|0177514|2021-07-01|0163263|2021-07-01|34204"}}],"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":"2025-05-16","lastDate":"2025-05-16","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":"2023-03-16","lastDate":"2026-02-12","metrics":{"ss":2,"delinquent":3,"recentRows":4,"paidPenalty":2157,"proposedPenalty":2157,"currentAssessment":2157},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"2943989","VIOLATION_NO":"9732825","ISSUE_DT":"02/12/2026","CFR_STANDARD_CD":"56.9300(b)","SIG_SUB_IND":"Y","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"1431.00","CURRENT_ASSESSMENT_AMT":"1431.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2026-02-12"},{"SOURCE_ROW_NUMBER":"2943988","VIOLATION_NO":"9732824","ISSUE_DT":"02/12/2026","CFR_STANDARD_CD":"56.9300(b)","SIG_SUB_IND":"Y","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"432.00","CURRENT_ASSESSMENT_AMT":"432.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2026-02-12"},{"SOURCE_ROW_NUMBER":"2035646","VIOLATION_NO":"9732531","ISSUE_DT":"09/09/2025","CFR_STANDARD_CD":"56.14206(b)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"151.00","CURRENT_ASSESSMENT_AMT":"151.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2025-09-09"},{"SOURCE_ROW_NUMBER":"2630799","VIOLATION_NO":"9653918","ISSUE_DT":"03/16/2023","CFR_STANDARD_CD":"56.4201(b)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"143.00","CURRENT_ASSESSMENT_AMT":"143.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2023-03-16"}]},{"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":"2021-07-01","lastDate":"2021-07-01","metrics":{"recentRows":1,"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":11,"firstDate":"2022-03-28","lastDate":"2026-06-05","metrics":{"inspectors":11,"recentRows":11,"onSiteHours":32.75,"inspectionHours":94.75,"inspectionSamples":0},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"1117668","EVENT_NO":"F009DA4","INSPECTION_BEGIN_DT":"06/05/2026","INSPECTION_END_DT":"06/11/2026","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"8.5","SUM_TOTAL_ON_SITE_HOURS":"3","sourceDate":"2026-06-05"},{"SOURCE_ROW_NUMBER":"1101142","EVENT_NO":"F00F371","INSPECTION_BEGIN_DT":"02/12/2026","INSPECTION_END_DT":"02/12/2026","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"9.5","SUM_TOTAL_ON_SITE_HOURS":"5","sourceDate":"2026-02-12"},{"SOURCE_ROW_NUMBER":"216322","EVENT_NO":"6472622","INSPECTION_BEGIN_DT":"09/09/2025","INSPECTION_END_DT":"09/15/2025","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"12.5","SUM_TOTAL_ON_SITE_HOURS":"6.75","sourceDate":"2025-09-09"},{"SOURCE_ROW_NUMBER":"998229","EVENT_NO":"F009F0C","INSPECTION_BEGIN_DT":"11/18/2024","INSPECTION_END_DT":"11/19/2024","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"10","SUM_TOTAL_ON_SITE_HOURS":"2.75","sourceDate":"2024-11-18"},{"SOURCE_ROW_NUMBER":"250273","EVENT_NO":"F01022B","INSPECTION_BEGIN_DT":"07/22/2024","INSPECTION_END_DT":"07/22/2024","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"3.25","SUM_TOTAL_ON_SITE_HOURS":"2","sourceDate":"2024-07-22"},{"SOURCE_ROW_NUMBER":"758907","EVENT_NO":"6948804","INSPECTION_BEGIN_DT":"01/31/2024","INSPECTION_END_DT":"01/31/2024","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"16.25","SUM_TOTAL_ON_SITE_HOURS":"3","sourceDate":"2024-01-31"},{"SOURCE_ROW_NUMBER":"1120832","EVENT_NO":"6946506","INSPECTION_BEGIN_DT":"06/21/2023","INSPECTION_END_DT":"06/22/2023","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"4.5","SUM_TOTAL_ON_SITE_HOURS":"2","sourceDate":"2023-06-21"},{"SOURCE_ROW_NUMBER":"1043637","EVENT_NO":"6860654","INSPECTION_BEGIN_DT":"03/13/2023","INSPECTION_END_DT":"03/16/2023","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"12.75","SUM_TOTAL_ON_SITE_HOURS":"4.25","sourceDate":"2023-03-13"},{"SOURCE_ROW_NUMBER":"1019039","EVENT_NO":"6943602","INSPECTION_BEGIN_DT":"08/30/2022","INSPECTION_END_DT":"08/30/2022","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"5.5","SUM_TOTAL_ON_SITE_HOURS":"3.5","sourceDate":"2022-08-30"},{"SOURCE_ROW_NUMBER":"562476","EVENT_NO":"6851842","INSPECTION_BEGIN_DT":"04/18/2022","INSPECTION_END_DT":"04/19/2022","ACTIVITY_CODE":"E28","ACTIVITY":"Mine Idle Activity","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"8.25","SUM_TOTAL_ON_SITE_HOURS":".25","sourceDate":"2022-04-18"},{"SOURCE_ROW_NUMBER":"89576","EVENT_NO":"6855365","INSPECTION_BEGIN_DT":"03/28/2022","INSPECTION_END_DT":"03/29/2022","ACTIVITY_CODE":"E28","ACTIVITY":"Mine Idle Activity","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"3.75","SUM_TOTAL_ON_SITE_HOURS":".25","sourceDate":"2022-03-28"}]},{"id":"msha-mine-production-quarterly","name":"Mine Employment and Production — Quarterly","domains":["production","safety","compliance"],"products":["production trend","employee hours","rate denominators","seasonality"],"rowCount":40,"firstDate":null,"lastDate":null,"metrics":{},"periods":{"2026-Q2":{"hours":2835,"employees":4,"production":0},"2026-Q1":{"hours":2440,"employees":4,"production":0},"2025-Q4":{"hours":2360,"employees":4,"production":0},"2025-Q3":{"hours":2810,"employees":5,"production":0},"2025-Q2":{"hours":700,"employees":1,"production":0},"2025-Q1":{"hours":2646,"employees":6,"production":0},"2024-Q4":{"hours":570,"employees":1,"production":0},"2024-Q3":{"hours":912,"employees":6,"production":0},"2024-Q2":{"hours":3195,"employees":6,"production":0},"2024-Q1":{"hours":3200,"employees":6,"production":0},"2023-Q4":{"hours":3192,"employees":6,"production":0},"2023-Q3":{"hours":3380,"employees":6,"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":7,"firstDate":null,"lastDate":null,"metrics":{},"periods":{"2021":{"hours":8384,"employees":8,"production":0},"2022":{"hours":17860,"employees":8,"production":0},"2023":{"hours":12432,"employees":6,"production":0},"2024":{"hours":7877,"employees":5,"production":0},"2025":{"hours":8516,"employees":4,"production":0},"2026":{"hours":5275,"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-personal-health-samples","name":"Metal and Nonmetal Personal Health Samples","domains":["health","safety"],"products":["personal exposure trend","occupation patterns","analyte coverage"],"rowCount":1,"firstDate":"2025-09-09","lastDate":"2025-09-09","metrics":{"recentRows":1,"actionTaken":1,"maxExposureRatio":0,"overExposureLimit":0,"exposureRatioTotal":0},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"299792","EVENT_NO":"6472622","SAMPLE_NO":"000000202503867900","SAMPLE_DATE":"09/09/2025","CONTAMINANT_DESC":"Respirable dust, <.1mg","CONCENTRATION":"0000.00","EXPOSURE_LIMIT":"0000.00","C_OVER_E":"00.00","JOB_CD_DESC":"Rotary Bucket Ex. Operator","ACTION_TAKEN_DESC":"NO ACTION","sourceDate":"2025-09-09"}]},{"id":"msha-violations","name":"Violations","domains":["compliance","safety","legal"],"products":["citation and order record","condition text","Title 30 linkage","abatement patterns"],"rowCount":4,"firstDate":"2023-03-16","lastDate":"2026-02-12","metrics":{"ss":2,"amountDue":2157,"contested":0,"amountPaid":2157,"recentRows":4,"section104d":0,"unterminated":0,"proposedPenalty":2157},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"1488097","VIOLATION_NO":"9732825","VIOLATION_ISSUE_DT":"02/12/2026","SIG_SUB":"Y","PART_SECTION":"56.9300(b)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Reasonably","INJ_ILLNESS":"Fatal","NO_AFFECTED":"2","NEGLIGENCE":"HighNegligence","TERMINATION_DT":"02/12/2026","PROPOSED_PENALTY":"1431","AMOUNT_DUE":"1431","AMOUNT_PAID":"1431","CONTESTED_IND":"N","sourceDate":"2026-02-12"},{"SOURCE_ROW_NUMBER":"1488096","VIOLATION_NO":"9732824","VIOLATION_ISSUE_DT":"02/12/2026","SIG_SUB":"Y","PART_SECTION":"56.9300(b)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Reasonably","INJ_ILLNESS":"Fatal","NO_AFFECTED":"2","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"02/12/2026","PROPOSED_PENALTY":"432","AMOUNT_DUE":"432","AMOUNT_PAID":"432","CONTESTED_IND":"N","sourceDate":"2026-02-12"},{"SOURCE_ROW_NUMBER":"1488099","VIOLATION_NO":"9732531","VIOLATION_ISSUE_DT":"09/09/2025","SIG_SUB":"N","PART_SECTION":"56.14206(b)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"09/09/2025","PROPOSED_PENALTY":"151","AMOUNT_DUE":"151","AMOUNT_PAID":"151","CONTESTED_IND":"N","sourceDate":"2025-09-09"},{"SOURCE_ROW_NUMBER":"1488098","VIOLATION_NO":"9653918","VIOLATION_ISSUE_DT":"03/16/2023","SIG_SUB":"N","PART_SECTION":"56.4201(b)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"03/16/2023","PROPOSED_PENALTY":"143","AMOUNT_DUE":"143","AMOUNT_PAID":"143","CONTESTED_IND":"N","sourceDate":"2023-03-16"}]}],"safety":{"href":"/api/v1/mines/2402765/safety","description":"Full-period safety series, top CFR sections and paginated activity. Requires PostgreSQL."},"silica":{"href":"/api/v1/mines/2402765/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":"Berms or guardrails.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-H/section-56.9300","part":"56","subchapter":"K","subpart":"H","id":"56.9300","citation":"30 CFR 56.9300","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":"Securing movable parts.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14206","part":"56","subchapter":"K","subpart":"M","id":"56.14206","citation":"30 CFR 56.14206","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.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4201","part":"56","subchapter":"K","subpart":"C","id":"56.4201","citation":"30 CFR 56.4201","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":"2402765","dataSource":"postgres","snapshotId":"2026-10-13T11:19:05.459773+00:00","completedAt":"2026-10-13T11:26:59.401Z","sourceCount":20,"totalRows":17906804}}