{"data":{"schemaVersion":"realm.mine-profile.v1","generatedAt":"2026-10-13T11:26:59.401Z","identity":{"mine_id":"4101295","name":"VanHorn","status":"Abandoned","status_date":"2002-08-05","mine_type":"Surface","coal_metal":"M","commodity":"Talc","state":"TX","county":"Hudspeth","nearest_town":"Van Horn","operator_id":"L00645","operator_name":"Unimin Texas Company L P","controller_id":"0159743","controller_name":"Covia Holdings LLC","district":"M5","office":"Carlsbad NM Field Office","employees":0,"latitude":31.054099,"longitude":-104.826795},"coverage":{"contributingSources":6,"registeredSources":20,"sourceRows":43},"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":"4101295","name":"VanHorn"},"operator":{"type":"operator","id":"L00645","name":"Unimin Texas Company L P"},"controller":{"type":"controller","id":"0159743","name":"Covia Holdings LLC"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L00214","name":"Southern Clay Products Inc"},"object":{"type":"mine","id":"4101295","name":"VanHorn"},"validFrom":"1950-01-01","validTo":"1991-09-24","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4101295|L00214|1950-01-01|1991-09-24"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00025","name":"English China Clays PLC"},"object":{"type":"mine","id":"4101295","name":"VanHorn"},"validFrom":"1950-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4101295|M00025|1950-01-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00025","name":"English China Clays PLC"},"object":{"type":"operator","id":"L00214","name":"Southern Clay Products Inc"},"validFrom":"1950-01-01","validTo":"1991-09-24","current":false,"derived":true,"evidenceMineId":"4101295","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4101295|L00214|1950-01-01|M00025|1950-01-01|102086"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00538","name":"S C R-Sibelco Nv et al"},"object":{"type":"mine","id":"4101295","name":"VanHorn"},"validFrom":"1950-01-01","validTo":"2020-12-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4101295|M00538|1950-01-01|2020-12-31"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L12358","name":"Southern Clay Products Inc"},"object":{"type":"mine","id":"4101295","name":"VanHorn"},"validFrom":"1991-09-25","validTo":"1992-02-23","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4101295|L12358|1991-09-25|1992-02-23"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M09256","name":"Laporte Plc"},"object":{"type":"mine","id":"4101295","name":"VanHorn"},"validFrom":"1991-09-25","validTo":"2002-10-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4101295|M09256|1991-09-25|2002-10-30"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M09256","name":"Laporte Plc"},"object":{"type":"operator","id":"L12358","name":"Southern Clay Products Inc"},"validFrom":"1991-09-25","validTo":"1992-02-23","current":false,"derived":true,"evidenceMineId":"4101295","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4101295|L12358|1991-09-25|M09256|1991-09-25|145968"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L12528","name":"United Clays Of Texas Inc"},"object":{"type":"mine","id":"4101295","name":"VanHorn"},"validFrom":"1992-02-24","validTo":"1999-10-03","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4101295|L12528|1992-02-24|1999-10-03"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M08318","name":"Watts Blake Bearne & Company Plc"},"object":{"type":"mine","id":"4101295","name":"VanHorn"},"validFrom":"1992-02-24","validTo":"1999-11-09","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4101295|M08318|1992-02-24|1999-11-09"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M08318","name":"Watts Blake Bearne & Company Plc"},"object":{"type":"operator","id":"L12528","name":"United Clays Of Texas Inc"},"validFrom":"1992-02-24","validTo":"1999-10-03","current":false,"derived":true,"evidenceMineId":"4101295","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4101295|L12528|1992-02-24|M08318|1992-02-24|143113"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L00645","name":"Unimin Texas Company L P"},"object":{"type":"mine","id":"4101295","name":"VanHorn"},"validFrom":"1999-10-04","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4101295|L00645|1999-10-04|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00538","name":"S C R-Sibelco Nv et al"},"object":{"type":"operator","id":"L00645","name":"Unimin Texas Company L P"},"validFrom":"1999-10-04","validTo":"2020-12-31","current":false,"derived":true,"evidenceMineId":"4101295","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4101295|L00645|1999-10-04|M00538|1950-01-01|112901"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0043717","name":"Rockwood Specialties Group Inc"},"object":{"type":"mine","id":"4101295","name":"VanHorn"},"validFrom":"2002-10-31","validTo":"2013-09-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4101295|0043717|2002-10-31|2013-09-30"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0043717","name":"Rockwood Specialties Group Inc"},"object":{"type":"operator","id":"L12358","name":"Southern Clay Products Inc"},"validFrom":"2002-10-31","validTo":"1992-02-23","current":false,"derived":true,"evidenceMineId":"4101295","intervalAnomaly":true,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4101295|L12358|1991-09-25|0043717|2002-10-31|4786"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0113325","name":"Altana Group (Germany)"},"object":{"type":"mine","id":"4101295","name":"VanHorn"},"validFrom":"2013-10-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4101295|0113325|2013-10-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0113325","name":"Altana Group (Germany)"},"object":{"type":"operator","id":"L12358","name":"Southern Clay Products Inc"},"validFrom":"2013-10-01","validTo":"1992-02-23","current":false,"derived":true,"evidenceMineId":"4101295","intervalAnomaly":true,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4101295|L12358|1991-09-25|0113325|2013-10-01|21142"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0159743","name":"Covia Holdings LLC"},"object":{"type":"mine","id":"4101295","name":"VanHorn"},"validFrom":"2021-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4101295|0159743|2021-01-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0159743","name":"Covia Holdings LLC"},"object":{"type":"operator","id":"L00645","name":"Unimin Texas Company L P"},"validFrom":"2021-01-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"4101295","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4101295|L00645|1999-10-04|0159743|2021-01-01|33266"}}],"coverage":{"historyRecords":7,"edgeCount":18,"intervalAnomalies":2,"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":"2002-08-05","lastDate":"2002-08-05","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":7,"firstDate":"1950-01-01","lastDate":"1999-10-04","metrics":{"recentRows":0,"currentOperatorTenures":2,"completedOperatorTenures":5},"periods":{},"recentRecords":[]},{"id":"msha-inspections","name":"Inspections","domains":["safety","compliance"],"products":["inspection mix","on-site hours","event context","citation rate denominator"],"rowCount":2,"firstDate":"2001-01-17","lastDate":"2002-07-24","metrics":{"inspectors":2,"recentRows":0,"onSiteHours":16,"inspectionHours":23,"inspectionSamples":0},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"663592","EVENT_NO":"0757665","INSPECTION_BEGIN_DT":"07/24/2002","INSPECTION_END_DT":"07/24/2002","ACTIVITY_CODE":"01","ACTIVITY":"REGULAR INSPECTION","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"4","SUM_TOTAL_ON_SITE_HOURS":"2","sourceDate":"2002-07-24"},{"SOURCE_ROW_NUMBER":"521311","EVENT_NO":"0714489","INSPECTION_BEGIN_DT":"01/17/2001","INSPECTION_END_DT":"01/18/2001","ACTIVITY_CODE":"01","ACTIVITY":"REGULAR INSPECTION","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"19","SUM_TOTAL_ON_SITE_HOURS":"14","sourceDate":"2001-01-17"}]},{"id":"msha-mine-production-quarterly","name":"Mine Employment and Production — Quarterly","domains":["production","safety","compliance"],"products":["production trend","employee hours","rate denominators","seasonality"],"rowCount":27,"firstDate":null,"lastDate":null,"metrics":{},"periods":{"2002-Q4":{"hours":0,"employees":0,"production":0},"2002-Q3":{"hours":0,"employees":0,"production":0},"2002-Q2":{"hours":0,"employees":0,"production":0},"2002-Q1":{"hours":1040,"employees":2,"production":0},"2001-Q4":{"hours":950,"employees":2,"production":0},"2001-Q3":{"hours":1000,"employees":2,"production":0},"2001-Q2":{"hours":940,"employees":2,"production":0},"2001-Q1":{"hours":1020,"employees":2,"production":0},"2000-Q4":{"hours":910,"employees":2,"production":0},"2000-Q3":{"hours":940,"employees":2,"production":0},"2000-Q2":{"hours":1000,"employees":2,"production":0},"2000-Q1":{"hours":1550,"employees":3,"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":5,"firstDate":null,"lastDate":null,"metrics":{},"periods":{"2000":{"hours":4400,"employees":2,"production":0},"2001":{"hours":3910,"employees":2,"production":0},"2002":{"hours":1040,"employees":2,"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":[]}],"safety":{"href":"/api/v1/mines/4101295/safety","description":"Full-period safety series, top CFR sections and paginated activity. Requires PostgreSQL."},"silica":{"href":"/api/v1/mines/4101295/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":"4101295","dataSource":"postgres","snapshotId":"2026-10-13T11:19:05.459773+00:00","completedAt":"2026-10-13T11:26:59.401Z","sourceCount":20,"totalRows":17906804}}