{"data":{"schemaVersion":"realm.mine-profile.v1","generatedAt":"2026-10-13T11:26:59.401Z","identity":{"mine_id":"4105512","name":"County Line","status":"Abandoned","status_date":"2021-02-10","mine_type":"Surface","coal_metal":"M","commodity":"Sand, Common","state":"TX","county":"Webb","nearest_town":"Laredo","operator_id":"L39736","operator_name":"Upper Valley Materials, LLC","controller_id":"M39736","controller_name":"Ramiro J  Flores; Rufino  Garza","district":"M5","office":"San Antonio TX Field Office","employees":0,"latitude":27.446742,"longitude":-99.468645},"coverage":{"contributingSources":4,"registeredSources":20,"sourceRows":5},"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":"4105512","name":"County Line"},"operator":{"type":"operator","id":"L39736","name":"Upper Valley Materials, LLC"},"controller":{"type":"controller","id":"M39736","name":"Ramiro J  Flores; Rufino  Garza"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M39736","name":"Rufino  Garza et al"},"object":{"type":"mine","id":"4105512","name":"County Line"},"validFrom":"1988-02-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4105512|M39736|1988-02-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L39736","name":"Upper Valley Materials, LLC"},"object":{"type":"mine","id":"4105512","name":"County Line"},"validFrom":"2021-03-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4105512|L39736|2021-03-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M39736","name":"Rufino  Garza et al"},"object":{"type":"operator","id":"L39736","name":"Upper Valley Materials, LLC"},"validFrom":"2021-03-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"4105512","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4105512|L39736|2021-03-01|M39736|1988-02-01|169322"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M39736","name":"Ramiro J  Flores et al"},"object":{"type":"operator","id":"L39736","name":"Upper Valley Materials, LLC"},"validFrom":"2021-03-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"4105512","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4105512|L39736|2021-03-01|M39736|1988-02-01|169323"}}],"coverage":{"historyRecords":2,"edgeCount":4,"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":"2021-02-10","lastDate":"2021-02-10","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":2,"firstDate":"2021-03-01","lastDate":"2021-03-01","metrics":{"recentRows":2,"currentOperatorTenures":2,"completedOperatorTenures":0},"periods":{},"recentRecords":[]},{"id":"msha-inspections","name":"Inspections","domains":["safety","compliance"],"products":["inspection mix","on-site hours","event context","citation rate denominator"],"rowCount":1,"firstDate":"2021-02-10","lastDate":"2021-02-10","metrics":{"inspectors":1,"recentRows":1,"onSiteHours":2.5,"inspectionHours":5,"inspectionSamples":0},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"306695","EVENT_NO":"6885781","INSPECTION_BEGIN_DT":"02/10/2021","INSPECTION_END_DT":"02/10/2021","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"5","SUM_TOTAL_ON_SITE_HOURS":"2.5","sourceDate":"2021-02-10"}]},{"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":[]}],"safety":{"href":"/api/v1/mines/4105512/safety","description":"Full-period safety series, top CFR sections and paginated activity. Requires PostgreSQL."},"silica":{"href":"/api/v1/mines/4105512/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":"4105512","dataSource":"postgres","snapshotId":"2026-10-13T11:19:05.459773+00:00","completedAt":"2026-10-13T11:26:59.401Z","sourceCount":20,"totalRows":17906804}}