{"data":{"schemaVersion":"realm.mine-profile.v1","generatedAt":"2026-10-13T11:26:59.401Z","identity":{"mine_id":"2902060","name":"MATHIS & MATHIS MIN CO MATHIS LI","status":"Abandoned","status_date":"2000-04-04","mine_type":"Surface","coal_metal":"M","commodity":"Crushed, Broken Stone NEC","state":"NM","county":"Grant","nearest_town":"","operator_id":"L13231","operator_name":"W L Maintenance Company","controller_id":"M10106","controller_name":"William E  Laudenklos","district":"M5","office":"Albuquerque NM Field Office","employees":0,"latitude":null,"longitude":null},"coverage":{"contributingSources":4,"registeredSources":20,"sourceRows":8},"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":"2902060","name":"MATHIS & MATHIS MIN CO MATHIS LI"},"operator":{"type":"operator","id":"L13231","name":"W L Maintenance Company"},"controller":{"type":"controller","id":"M10106","name":"William E  Laudenklos"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M05093","name":"Goldfield Corp"},"object":{"type":"mine","id":"2902060","name":"MATHIS & MATHIS MIN CO MATHIS LI"},"validFrom":"1950-01-01","validTo":"2002-12-03","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2902060|M05093|1950-01-01|2002-12-03"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M09516","name":"Daniel L  Maxwell"},"object":{"type":"mine","id":"2902060","name":"MATHIS & MATHIS MIN CO MATHIS LI"},"validFrom":"1990-04-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2902060|M09516|1990-04-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L06398","name":"St Cloud Mining Company"},"object":{"type":"mine","id":"2902060","name":"MATHIS & MATHIS MIN CO MATHIS LI"},"validFrom":"1990-09-01","validTo":"1991-10-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2902060|L06398|1990-09-01|1991-10-31"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M05093","name":"Goldfield Corp"},"object":{"type":"operator","id":"L06398","name":"St Cloud Mining Company"},"validFrom":"1990-09-01","validTo":"1991-10-31","current":false,"derived":true,"evidenceMineId":"2902060","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2902060|L06398|1990-09-01|M05093|1950-01-01|133636"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L12399","name":"Southwest Exploration Inc"},"object":{"type":"mine","id":"2902060","name":"MATHIS & MATHIS MIN CO MATHIS LI"},"validFrom":"1991-11-01","validTo":"1993-07-06","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2902060|L12399|1991-11-01|1993-07-06"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M09516","name":"Daniel L  Maxwell"},"object":{"type":"operator","id":"L12399","name":"Southwest Exploration Inc"},"validFrom":"1991-11-01","validTo":"1993-07-06","current":false,"derived":true,"evidenceMineId":"2902060","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2902060|L12399|1991-11-01|M09516|1990-04-01|146572"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L13231","name":"W L Maintenance Company"},"object":{"type":"mine","id":"2902060","name":"MATHIS & MATHIS MIN CO MATHIS LI"},"validFrom":"1993-07-07","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2902060|L13231|1993-07-07|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M10106","name":"William E  Laudenklos"},"object":{"type":"mine","id":"2902060","name":"MATHIS & MATHIS MIN CO MATHIS LI"},"validFrom":"1993-07-07","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2902060|M10106|1993-07-07|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M10106","name":"William E  Laudenklos"},"object":{"type":"operator","id":"L13231","name":"W L Maintenance Company"},"validFrom":"1993-07-07","validTo":null,"current":true,"derived":true,"evidenceMineId":"2902060","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2902060|L13231|1993-07-07|M10106|1993-07-07|148396"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0041943","name":"Imagin Minerals Incorporated"},"object":{"type":"mine","id":"2902060","name":"MATHIS & MATHIS MIN CO MATHIS LI"},"validFrom":"2002-12-04","validTo":"2024-12-12","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2902060|0041943|2002-12-04|2024-12-12"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0041943","name":"Imagin Minerals Incorporated"},"object":{"type":"operator","id":"L06398","name":"St Cloud Mining Company"},"validFrom":"2002-12-04","validTo":"1991-10-31","current":false,"derived":true,"evidenceMineId":"2902060","intervalAnomaly":true,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2902060|L06398|1990-09-01|0041943|2002-12-04|3339"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0191381","name":"Equalizer Inc"},"object":{"type":"mine","id":"2902060","name":"MATHIS & MATHIS MIN CO MATHIS LI"},"validFrom":"2024-12-13","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2902060|0191381|2024-12-13|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0191381","name":"Equalizer Inc"},"object":{"type":"operator","id":"L06398","name":"St Cloud Mining Company"},"validFrom":"2024-12-13","validTo":"1991-10-31","current":false,"derived":true,"evidenceMineId":"2902060","intervalAnomaly":true,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2902060|L06398|1990-09-01|0191381|2024-12-13|40728"}}],"coverage":{"historyRecords":5,"edgeCount":13,"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":"2000-04-04","lastDate":"2000-04-04","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":5,"firstDate":"1990-09-01","lastDate":"1993-07-07","metrics":{"recentRows":0,"currentOperatorTenures":1,"completedOperatorTenures":4},"periods":{},"recentRecords":[]},{"id":"msha-inspections","name":"Inspections","domains":["safety","compliance"],"products":["inspection mix","on-site hours","event context","citation rate denominator"],"rowCount":1,"firstDate":"2000-02-02","lastDate":"2000-02-02","metrics":{"inspectors":1,"recentRows":0,"onSiteHours":1,"inspectionHours":4,"inspectionSamples":0},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"33200","EVENT_NO":"0683139","INSPECTION_BEGIN_DT":"02/02/2000","INSPECTION_END_DT":"02/02/2000","ACTIVITY_CODE":"10","ACTIVITY":"ATTEMPTED INSPECTION","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"4","SUM_TOTAL_ON_SITE_HOURS":"1","sourceDate":"2000-02-02"}]},{"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/2902060/safety","description":"Full-period safety series, top CFR sections and paginated activity. Requires PostgreSQL."},"silica":{"href":"/api/v1/mines/2902060/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":"2902060","dataSource":"postgres","snapshotId":"2026-10-13T11:19:05.459773+00:00","completedAt":"2026-10-13T11:26:59.401Z","sourceCount":20,"totalRows":17906804}}