{"data":{"schemaVersion":"realm.mine-profile.v1","generatedAt":"2026-10-13T11:26:59.401Z","identity":{"mine_id":"3102263","name":"WALKER SAND PIT","status":"Intermittent","status_date":"2026-02-02","mine_type":"Surface","coal_metal":"M","commodity":"Sand, Common","state":"NC","county":"Davie","nearest_town":"ADVANCE","operator_id":"L16466","operator_name":"CAROLINA SAND, INC","controller_id":"M12598","controller_name":"Wayne  Cassavaugh","district":"C05","office":"Sanford NC Field Office","employees":1,"latitude":36.058889,"longitude":-80.467222},"coverage":{"contributingSources":9,"registeredSources":20,"sourceRows":130},"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":"3102263","name":"WALKER SAND PIT"},"operator":{"type":"operator","id":"L16466","name":"CAROLINA SAND, INC"},"controller":{"type":"controller","id":"M12598","name":"Wayne  Cassavaugh"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M12598","name":"Wayne  Cassavaugh"},"object":{"type":"mine","id":"3102263","name":"WALKER SAND PIT"},"validFrom":"1999-04-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3102263|M12598|1999-04-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L16466","name":"CAROLINA SAND, INC"},"object":{"type":"mine","id":"3102263","name":"WALKER SAND PIT"},"validFrom":"2011-03-18","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3102263|L16466|2011-03-18|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M12598","name":"Wayne  Cassavaugh"},"object":{"type":"operator","id":"L16466","name":"CAROLINA SAND, INC"},"validFrom":"2011-03-18","validTo":null,"current":true,"derived":true,"evidenceMineId":"3102263","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3102263|L16466|2011-03-18|M12598|1999-04-01|154111"}}],"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":"2026-02-02","lastDate":"2026-02-02","metrics":{},"periods":{},"recentRecords":[]},{"id":"msha-assessed-violations","name":"Assessed Violations","domains":["compliance","legal"],"products":["penalty lifecycle","paid and outstanding amounts","assessment aging"],"rowCount":3,"firstDate":"2011-05-25","lastDate":"2011-12-05","metrics":{"ss":1,"delinquent":3,"recentRows":0,"paidPenalty":443,"proposedPenalty":443,"currentAssessment":443},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"2093800","VIOLATION_NO":"8637584","ISSUE_DT":"12/05/2011","CFR_STANDARD_CD":"56.1000","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"100.00","CURRENT_ASSESSMENT_AMT":"100.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2011-12-05"},{"SOURCE_ROW_NUMBER":"2093888","VIOLATION_NO":"8631405","ISSUE_DT":"05/25/2011","CFR_STANDARD_CD":"56.11001","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"100.00","CURRENT_ASSESSMENT_AMT":"100.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2011-05-25"},{"SOURCE_ROW_NUMBER":"2093887","VIOLATION_NO":"8631404","ISSUE_DT":"05/25/2011","CFR_STANDARD_CD":"56.12017","SIG_SUB_IND":"Y","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"243.00","CURRENT_ASSESSMENT_AMT":"243.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2011-05-25"}]},{"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":"2011-03-18","lastDate":"2011-03-18","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":12,"firstDate":"2011-05-25","lastDate":"2026-02-02","metrics":{"inspectors":12,"recentRows":6,"onSiteHours":44,"inspectionHours":99,"inspectionSamples":0},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"1031576","EVENT_NO":"F01466B","INSPECTION_BEGIN_DT":"02/02/2026","INSPECTION_END_DT":"02/03/2026","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"8.75","SUM_TOTAL_ON_SITE_HOURS":"1.25","sourceDate":"2026-02-02"},{"SOURCE_ROW_NUMBER":"298459","EVENT_NO":"F01D219","INSPECTION_BEGIN_DT":"06/04/2025","INSPECTION_END_DT":"06/04/2025","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"2","SUM_TOTAL_ON_SITE_HOURS":"1.25","sourceDate":"2025-06-04"},{"SOURCE_ROW_NUMBER":"297032","EVENT_NO":"F0163F5","INSPECTION_BEGIN_DT":"01/22/2025","INSPECTION_END_DT":"01/22/2025","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"6.75","SUM_TOTAL_ON_SITE_HOURS":"3","sourceDate":"2025-01-22"},{"SOURCE_ROW_NUMBER":"737156","EVENT_NO":"F00DF8F","INSPECTION_BEGIN_DT":"09/05/2024","INSPECTION_END_DT":"09/05/2024","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"6.75","SUM_TOTAL_ON_SITE_HOURS":"3.5","sourceDate":"2024-09-05"},{"SOURCE_ROW_NUMBER":"266488","EVENT_NO":"6919286","INSPECTION_BEGIN_DT":"02/15/2024","INSPECTION_END_DT":"02/15/2024","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"7.25","SUM_TOTAL_ON_SITE_HOURS":"2.5","sourceDate":"2024-02-15"},{"SOURCE_ROW_NUMBER":"494909","EVENT_NO":"6919249","INSPECTION_BEGIN_DT":"09/07/2023","INSPECTION_END_DT":"09/07/2023","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"7.25","SUM_TOTAL_ON_SITE_HOURS":"3.75","sourceDate":"2023-09-07"},{"SOURCE_ROW_NUMBER":"1159079","EVENT_NO":"6714169","INSPECTION_BEGIN_DT":"03/22/2017","INSPECTION_END_DT":"03/22/2017","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"7.75","SUM_TOTAL_ON_SITE_HOURS":"2.75","sourceDate":"2017-03-22"},{"SOURCE_ROW_NUMBER":"365714","EVENT_NO":"6643007","INSPECTION_BEGIN_DT":"09/03/2014","INSPECTION_END_DT":"09/03/2014","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"9.5","SUM_TOTAL_ON_SITE_HOURS":"3","sourceDate":"2014-09-03"},{"SOURCE_ROW_NUMBER":"412387","EVENT_NO":"6583511","INSPECTION_BEGIN_DT":"10/11/2012","INSPECTION_END_DT":"10/11/2012","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"4.5","SUM_TOTAL_ON_SITE_HOURS":"1","sourceDate":"2012-10-11"},{"SOURCE_ROW_NUMBER":"1014064","EVENT_NO":"6583378","INSPECTION_BEGIN_DT":"05/07/2012","INSPECTION_END_DT":"05/10/2012","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"14","SUM_TOTAL_ON_SITE_HOURS":"10","sourceDate":"2012-05-07"},{"SOURCE_ROW_NUMBER":"23728","EVENT_NO":"6528584","INSPECTION_BEGIN_DT":"12/05/2011","INSPECTION_END_DT":"12/06/2011","ACTIVITY_CODE":"E16","ACTIVITY":"Spot Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"7","SUM_TOTAL_ON_SITE_HOURS":".5","sourceDate":"2011-12-05"},{"SOURCE_ROW_NUMBER":"294004","EVENT_NO":"6528647","INSPECTION_BEGIN_DT":"05/25/2011","INSPECTION_END_DT":"05/26/2011","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"17.5","SUM_TOTAL_ON_SITE_HOURS":"11.5","sourceDate":"2011-05-25"}]},{"id":"msha-mine-production-quarterly","name":"Mine Employment and Production — Quarterly","domains":["production","safety","compliance"],"products":["production trend","employee hours","rate denominators","seasonality"],"rowCount":98,"firstDate":null,"lastDate":null,"metrics":{},"periods":{"2026-Q2":{"hours":0,"employees":0,"production":0},"2026-Q1":{"hours":0,"employees":0,"production":0},"2025-Q4":{"hours":0,"employees":0,"production":0},"2025-Q3":{"hours":0,"employees":0,"production":0},"2025-Q2":{"hours":0,"employees":0,"production":0},"2025-Q1":{"hours":0,"employees":0,"production":0},"2024-Q4":{"hours":0,"employees":0,"production":0},"2024-Q3":{"hours":0,"employees":0,"production":0},"2024-Q2":{"hours":0,"employees":0,"production":0},"2024-Q1":{"hours":0,"employees":0,"production":0},"2023-Q4":{"hours":0,"employees":0,"production":0},"2023-Q3":{"hours":0,"employees":0,"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":8,"firstDate":null,"lastDate":null,"metrics":{},"periods":{"2011":{"hours":1783,"employees":2,"production":0},"2012":{"hours":376,"employees":1,"production":0},"2013":{"hours":160,"employees":1,"production":0},"2014":{"hours":2,"employees":1,"production":0},"2017":{"hours":3019,"employees":2,"production":0},"2018":{"hours":17,"employees":1,"production":0},"2026":{"hours":0,"employees":0,"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":3,"firstDate":"2011-05-26","lastDate":"2012-05-10","metrics":{"recentRows":0,"actionTaken":3,"maxExposureRatio":0,"overExposureLimit":0,"exposureRatioTotal":0},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"126343","EVENT_NO":"6583378","SAMPLE_NO":"000000201204884300","SAMPLE_DATE":"05/10/2012","CONTAMINANT_DESC":"Respirable dust, <.1mg","CONCENTRATION":"0000.00","EXPOSURE_LIMIT":"0000.00","C_OVER_E":"00.00","JOB_CD_DESC":"Supervisor, Co. Official","ACTION_TAKEN_DESC":"NO ACTION","sourceDate":"2012-05-10"},{"SOURCE_ROW_NUMBER":"131521","EVENT_NO":"6528647","SAMPLE_NO":"000000201104975200","SAMPLE_DATE":"05/26/2011","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":"2011-05-26"},{"SOURCE_ROW_NUMBER":"131520","EVENT_NO":"6528647","SAMPLE_NO":"000000201104975100","SAMPLE_DATE":"05/26/2011","CONTAMINANT_DESC":"Respirable dust, <.1mg","CONCENTRATION":"0000.00","EXPOSURE_LIMIT":"0000.00","C_OVER_E":"00.00","JOB_CD_DESC":"Dredge/Barge Operator","ACTION_TAKEN_DESC":"NO ACTION","sourceDate":"2011-05-26"}]},{"id":"msha-violations","name":"Violations","domains":["compliance","safety","legal"],"products":["citation and order record","condition text","Title 30 linkage","abatement patterns"],"rowCount":3,"firstDate":"2011-05-25","lastDate":"2011-12-05","metrics":{"ss":1,"amountDue":443,"contested":0,"amountPaid":443,"recentRows":0,"section104d":0,"unterminated":0,"proposedPenalty":443},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"1699742","VIOLATION_NO":"8637584","VIOLATION_ISSUE_DT":"12/05/2011","SIG_SUB":"N","PART_SECTION":"56.1000","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"NoLostDays","NO_AFFECTED":"2","NEGLIGENCE":"HighNegligence","TERMINATION_DT":"12/12/2011","PROPOSED_PENALTY":"100","AMOUNT_DUE":"100","AMOUNT_PAID":"100","CONTESTED_IND":"N","sourceDate":"2011-12-05"},{"SOURCE_ROW_NUMBER":"1699741","VIOLATION_NO":"8631405","VIOLATION_ISSUE_DT":"05/25/2011","SIG_SUB":"N","PART_SECTION":"56.11001","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"Fatal","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"05/26/2011","PROPOSED_PENALTY":"100","AMOUNT_DUE":"100","AMOUNT_PAID":"100","CONTESTED_IND":"N","sourceDate":"2011-05-25"},{"SOURCE_ROW_NUMBER":"1699740","VIOLATION_NO":"8631404","VIOLATION_ISSUE_DT":"05/25/2011","SIG_SUB":"Y","PART_SECTION":"56.12017","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Reasonably","INJ_ILLNESS":"Fatal","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"05/26/2011","PROPOSED_PENALTY":"243","AMOUNT_DUE":"243","AMOUNT_PAID":"243","CONTESTED_IND":"N","sourceDate":"2011-05-25"}]}],"safety":{"href":"/api/v1/mines/3102263/safety","description":"Full-period safety series, top CFR sections and paginated activity. Requires PostgreSQL."},"silica":{"href":"/api/v1/mines/3102263/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":"Notification of commencement of operations and closing of mines.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-A/section-56.1000","part":"56","subchapter":"K","subpart":"A","id":"56.1000","citation":"30 CFR 56.1000","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":"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":"Work on power circuits.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12017","part":"56","subchapter":"K","subpart":"K","id":"56.12017","citation":"30 CFR 56.12017","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":"3102263","dataSource":"postgres","snapshotId":"2026-10-13T11:19:05.459773+00:00","completedAt":"2026-10-13T11:26:59.401Z","sourceCount":20,"totalRows":17906804}}