{"data":{"schemaVersion":"realm.mine-profile.v1","generatedAt":"2026-10-13T11:26:59.401Z","identity":{"mine_id":"4801902","name":"C&H Portable","status":"Intermittent","status_date":"2025-09-03","mine_type":"Surface","coal_metal":"M","commodity":"Construction Sand and Gravel","state":"WY","county":"Laramie","nearest_town":"Granite Wyoming","operator_id":"0162853","operator_name":"C&H Excavation LLC","controller_id":"0146921","controller_name":"Cliff E  Simpson","district":"M6","office":"Denver CO Field Office","employees":5,"latitude":41.865278,"longitude":-105.171667},"coverage":{"contributingSources":9,"registeredSources":20,"sourceRows":19},"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":"4801902","name":"C&H Portable"},"operator":{"type":"operator","id":"0162853","name":"C&H Excavation LLC"},"controller":{"type":"controller","id":"0146921","name":"Cliff E  Simpson"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"0146921","name":"Cliff E  Simpson"},"object":{"type":"mine","id":"4801902","name":"C&H Portable"},"validFrom":"2019-01-30","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4801902|0146921|2019-01-30|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0162853","name":"C&H Excavation LLC"},"object":{"type":"mine","id":"4801902","name":"C&H Portable"},"validFrom":"2025-08-14","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4801902|0162853|2025-08-14|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0146921","name":"Cliff E  Simpson"},"object":{"type":"operator","id":"0162853","name":"C&H Excavation LLC"},"validFrom":"2025-08-14","validTo":null,"current":true,"derived":true,"evidenceMineId":"4801902","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4801902|0162853|2025-08-14|0146921|2019-01-30|30074"}}],"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":"2025-09-03","lastDate":"2025-09-03","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":"2025-10-30","lastDate":"2025-10-30","metrics":{"ss":0,"delinquent":2,"recentRows":2,"paidPenalty":302,"proposedPenalty":302,"currentAssessment":302},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"3016705","VIOLATION_NO":"5056941","ISSUE_DT":"10/30/2025","CFR_STANDARD_CD":"56.11001","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"151.00","CURRENT_ASSESSMENT_AMT":"151.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2025-10-30"},{"SOURCE_ROW_NUMBER":"3016704","VIOLATION_NO":"5056940","ISSUE_DT":"10/30/2025","CFR_STANDARD_CD":"56.14112(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":"2025-10-30"}]},{"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":"2025-08-14","lastDate":"2025-08-14","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":2,"firstDate":"2025-09-03","lastDate":"2025-10-30","metrics":{"inspectors":2,"recentRows":2,"onSiteHours":18.25,"inspectionHours":27.25,"inspectionSamples":0},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"815661","EVENT_NO":"F02BB3B","INSPECTION_BEGIN_DT":"10/30/2025","INSPECTION_END_DT":"11/03/2025","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"23.25","SUM_TOTAL_ON_SITE_HOURS":"17.25","sourceDate":"2025-10-30"},{"SOURCE_ROW_NUMBER":"213620","EVENT_NO":"F004253","INSPECTION_BEGIN_DT":"09/03/2025","INSPECTION_END_DT":"09/05/2025","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"4","SUM_TOTAL_ON_SITE_HOURS":"1","sourceDate":"2025-09-03"}]},{"id":"msha-mine-production-quarterly","name":"Mine Employment and Production — Quarterly","domains":["production","safety","compliance"],"products":["production trend","employee hours","rate denominators","seasonality"],"rowCount":4,"firstDate":null,"lastDate":null,"metrics":{},"periods":{"2026-Q2":{"hours":2561,"employees":4,"production":0},"2026-Q1":{"hours":540,"employees":4,"production":0},"2025-Q4":{"hours":702,"employees":4,"production":0},"2025-Q3":{"hours":907,"employees":4,"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":2,"firstDate":null,"lastDate":null,"metrics":{},"periods":{"2025":{"hours":1609,"employees":4,"production":0},"2026":{"hours":3101,"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":4,"firstDate":"2025-10-31","lastDate":"2025-10-31","metrics":{"recentRows":4,"actionTaken":4,"maxExposureRatio":0.27,"overExposureLimit":0,"exposureRatioTotal":0.27},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"303131","EVENT_NO":"F02BB3B","SAMPLE_NO":"000000202504809500","SAMPLE_DATE":"10/31/2025","CONTAMINANT_DESC":"Respirable dust, <.1mg","CONCENTRATION":"0000.00","EXPOSURE_LIMIT":"0000.00","C_OVER_E":"00.00","JOB_CD_DESC":"Front-end Loader Operator","ACTION_TAKEN_DESC":"NO ACTION","sourceDate":"2025-10-31"},{"SOURCE_ROW_NUMBER":"303130","EVENT_NO":"F02BB3B","SAMPLE_NO":"000000202504809400","SAMPLE_DATE":"10/31/2025","CONTAMINANT_DESC":"Quartz, respirable, >1% Qtz","CONCENTRATION":"0000.53","EXPOSURE_LIMIT":"0002.00","C_OVER_E":"00.27","JOB_CD_DESC":"Crusher Oper/Worker","ACTION_TAKEN_DESC":"NO ACTION","sourceDate":"2025-10-31"},{"SOURCE_ROW_NUMBER":"303129","EVENT_NO":"F02BB3B","SAMPLE_NO":"000000202504809300","SAMPLE_DATE":"10/31/2025","CONTAMINANT_DESC":"Respirable dust, <.1mg","CONCENTRATION":"0000.00","EXPOSURE_LIMIT":"0000.00","C_OVER_E":"00.00","JOB_CD_DESC":"Front-end Loader Operator","ACTION_TAKEN_DESC":"NO ACTION","sourceDate":"2025-10-31"},{"SOURCE_ROW_NUMBER":"303128","EVENT_NO":"F02BB3B","SAMPLE_NO":"000000202504809200","SAMPLE_DATE":"10/31/2025","CONTAMINANT_DESC":"Quartz, respirable, >1% Qtz","CONCENTRATION":"0000.14","EXPOSURE_LIMIT":"0000.00","C_OVER_E":"00.00","JOB_CD_DESC":"Truck Driver","ACTION_TAKEN_DESC":"NO ACTION","sourceDate":"2025-10-31"}]},{"id":"msha-violations","name":"Violations","domains":["compliance","safety","legal"],"products":["citation and order record","condition text","Title 30 linkage","abatement patterns"],"rowCount":2,"firstDate":"2025-10-30","lastDate":"2025-10-30","metrics":{"ss":0,"amountDue":302,"contested":0,"amountPaid":302,"recentRows":2,"section104d":0,"unterminated":0,"proposedPenalty":302},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"3074669","VIOLATION_NO":"5056941","VIOLATION_ISSUE_DT":"10/30/2025","SIG_SUB":"N","PART_SECTION":"56.11001","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"10/31/2025","PROPOSED_PENALTY":"151","AMOUNT_DUE":"151","AMOUNT_PAID":"151","CONTESTED_IND":"N","sourceDate":"2025-10-30"},{"SOURCE_ROW_NUMBER":"3074668","VIOLATION_NO":"5056940","VIOLATION_ISSUE_DT":"10/30/2025","SIG_SUB":"N","PART_SECTION":"56.14112(b)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"Permanent","NO_AFFECTED":"1","NEGLIGENCE":"HighNegligence","TERMINATION_DT":"10/30/2025","PROPOSED_PENALTY":"151","AMOUNT_DUE":"151","AMOUNT_PAID":"151","CONTESTED_IND":"N","sourceDate":"2025-10-30"}]}],"safety":{"href":"/api/v1/mines/4801902/safety","description":"Full-period safety series, top CFR sections and paginated activity. Requires PostgreSQL."},"silica":{"href":"/api/v1/mines/4801902/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":"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":1},{"chapter":"I","heading":"Construction and maintenance of guards.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14112","part":"56","subchapter":"K","subpart":"M","id":"56.14112","citation":"30 CFR 56.14112","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":"4801902","dataSource":"postgres","snapshotId":"2026-10-13T11:19:05.459773+00:00","completedAt":"2026-10-13T11:26:59.401Z","sourceCount":20,"totalRows":17906804}}