{"data":{"schemaVersion":"realm.mine-profile.v1","generatedAt":"2026-10-18T09:31:49.615Z","identity":{"mine_id":"3101843","name":"AARON SAND & GRAVEL #2 MINE","status":"Abandoned","status_date":"2001-04-25","mine_type":"Surface","coal_metal":"M","commodity":"Construction Sand and Gravel","state":"NC","county":"Davie","nearest_town":"","operator_id":"L17999","operator_name":"Larco Construction","controller_id":"M03183","controller_name":"Colas S A","district":"C05","office":"Sanford NC Field Office","employees":0,"latitude":null,"longitude":null},"coverage":{"contributingSources":7,"registeredSources":20,"sourceRows":20},"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":"2026-10-18T09:31:49.615908+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":"3101843","name":"AARON SAND & GRAVEL #2 MINE"},"operator":{"type":"operator","id":"L17999","name":"Larco Construction"},"controller":{"type":"controller","id":"M03183","name":"Colas S A"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-18T09:31:49.615908+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00454","name":"Philipp Holzmann A G"},"object":{"type":"mine","id":"3101843","name":"AARON SAND & GRAVEL #2 MINE"},"validFrom":"1950-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"3101843|M00454|1950-01-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L00534","name":"Rea Construction Company"},"object":{"type":"mine","id":"3101843","name":"AARON SAND & GRAVEL #2 MINE"},"validFrom":"1979-01-01","validTo":"1996-04-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"3101843|L00534|1979-01-01|1996-04-30"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00454","name":"Philipp Holzmann A G"},"object":{"type":"operator","id":"L00534","name":"Rea Construction Company"},"validFrom":"1979-01-01","validTo":"1996-04-30","current":false,"derived":true,"evidenceMineId":"3101843","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"3101843|L00534|1979-01-01|M00454|1950-01-01|111294"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M09705","name":"Sandra  Beeman"},"object":{"type":"mine","id":"3101843","name":"AARON SAND & GRAVEL #2 MINE"},"validFrom":"1992-06-23","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"3101843|M09705|1992-06-23|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L12665","name":"Aaron Sand & Gravel Company"},"object":{"type":"mine","id":"3101843","name":"AARON SAND & GRAVEL #2 MINE"},"validFrom":"1996-05-01","validTo":"2000-03-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"3101843|L12665|1996-05-01|2000-03-31"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M09705","name":"Sandra  Beeman"},"object":{"type":"operator","id":"L12665","name":"Aaron Sand & Gravel Company"},"validFrom":"1996-05-01","validTo":"2000-03-31","current":false,"derived":true,"evidenceMineId":"3101843","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"3101843|L12665|1996-05-01|M09705|1992-06-23|147023"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L17999","name":"Larco Construction"},"object":{"type":"mine","id":"3101843","name":"AARON SAND & GRAVEL #2 MINE"},"validFrom":"2000-04-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"3101843|L17999|2000-04-01|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M03183","name":"Colas S A"},"object":{"type":"mine","id":"3101843","name":"AARON SAND & GRAVEL #2 MINE"},"validFrom":"2000-04-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"3101843|M03183|2000-04-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M03183","name":"Colas S A"},"object":{"type":"operator","id":"L17999","name":"Larco Construction"},"validFrom":"2000-04-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"3101843","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"3101843|L17999|2000-04-01|M03183|2000-04-01|128371"}}],"coverage":{"historyRecords":3,"edgeCount":9,"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":"2001-04-25","lastDate":"2001-04-25","metrics":{},"periods":{},"recentRecords":[]},{"id":"msha-controller-operator-history","name":"Controller and Operator History","domains":["identity","compliance"],"products":["historical ownership attribution","operator transitions","valid-time joins"],"rowCount":3,"firstDate":"1979-01-01","lastDate":"2000-04-01","metrics":{"recentRows":0,"currentOperatorTenures":1,"completedOperatorTenures":2},"periods":{},"recentRecords":[]},{"id":"msha-inspections","name":"Inspections","domains":["safety","compliance"],"products":["inspection mix","on-site hours","event context","citation rate denominator"],"rowCount":3,"firstDate":"2000-07-12","lastDate":"2001-04-25","metrics":{"inspectors":3,"recentRows":0,"onSiteHours":15,"inspectionHours":24,"inspectionSamples":0},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"754840","EVENT_NO":"0690776","INSPECTION_BEGIN_DT":"04/25/2001","INSPECTION_END_DT":"04/25/2001","ACTIVITY_CODE":"01","ACTIVITY":"REGULAR INSPECTION","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"8","SUM_TOTAL_ON_SITE_HOURS":"4","sourceDate":"2001-04-25"},{"SOURCE_ROW_NUMBER":"1121466","EVENT_NO":"0712453","INSPECTION_BEGIN_DT":"01/31/2001","INSPECTION_END_DT":"01/31/2001","ACTIVITY_CODE":"16","ACTIVITY":"PART 50 AUDIT","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"6","SUM_TOTAL_ON_SITE_HOURS":"3","sourceDate":"2001-01-31"},{"SOURCE_ROW_NUMBER":"788396","EVENT_NO":"0712267","INSPECTION_BEGIN_DT":"07/12/2000","INSPECTION_END_DT":"07/12/2000","ACTIVITY_CODE":"01","ACTIVITY":"REGULAR INSPECTION","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"10","SUM_TOTAL_ON_SITE_HOURS":"8","sourceDate":"2000-07-12"}]},{"id":"msha-mine-production-quarterly","name":"Mine Employment and Production — Quarterly","domains":["production","safety","compliance"],"products":["production trend","employee hours","rate denominators","seasonality"],"rowCount":8,"firstDate":null,"lastDate":null,"metrics":{},"periods":{"2001-Q2":{"hours":1,"employees":1,"production":0},"2001-Q1":{"hours":2,"employees":1,"production":0},"2000-Q4":{"hours":0,"employees":0,"production":0},"2000-Q2":{"hours":1,"employees":1,"production":0},"2000-Q1":{"hours":1,"employees":1,"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":{"2000":{"hours":2,"employees":1,"production":0},"2001":{"hours":3,"employees":1,"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":2,"firstDate":"2000-07-12","lastDate":"2000-07-12","metrics":{"recentRows":0,"actionTaken":2,"maxExposureRatio":0,"overExposureLimit":0,"exposureRatioTotal":0},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"201164","EVENT_NO":"0712267","SAMPLE_NO":"800000200000015800","SAMPLE_DATE":"07/12/2000","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 (NO LONGER USED)","sourceDate":"2000-07-12"},{"SOURCE_ROW_NUMBER":"200810","EVENT_NO":"0712267","SAMPLE_NO":"800000200000015700","SAMPLE_DATE":"07/12/2000","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 (NO LONGER USED)","sourceDate":"2000-07-12"}]}],"safety":{"href":"/api/v1/mines/3101843/safety","description":"Full-period safety series, top CFR sections and paginated activity. Requires PostgreSQL."},"silica":{"href":"/api/v1/mines/3101843/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":[],"fullCorpus":"/data/title30-sections.json"}}},"meta":{"representation":"json","mineId":"3101843","dataSource":"postgres","snapshotId":"2026-10-18T09:31:49.615908+00:00","completedAt":"2026-10-18T09:31:49.615Z","sourceCount":20,"totalRows":17915666}}