{"data":{"schemaVersion":"realm.mine-profile.v1","generatedAt":"2026-10-13T11:26:59.401Z","identity":{"mine_id":"2600724","name":"VALLEY ROCK PIT","status":"Abandoned","status_date":"1999-04-12","mine_type":"Surface","coal_metal":"M","commodity":"Construction Sand and Gravel","state":"NV","county":"Nye","nearest_town":"","operator_id":"L15443","operator_name":"Valley Rock & Sand Inc","controller_id":"M11774","controller_name":"Mendel Lisa","district":"M7","office":"Henderson NV Field Office","employees":0,"latitude":null,"longitude":null},"coverage":{"contributingSources":3,"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":"2600724","name":"VALLEY ROCK PIT"},"operator":{"type":"operator","id":"L15443","name":"Valley Rock & Sand Inc"},"controller":{"type":"controller","id":"M11774","name":"Mendel Lisa"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L01882","name":"Valley Sand & Gravel Company"},"object":{"type":"mine","id":"2600724","name":"VALLEY ROCK PIT"},"validFrom":"1950-01-01","validTo":"1983-07-18","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2600724|L01882|1950-01-01|1983-07-18"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M01695","name":"Olson Donald"},"object":{"type":"mine","id":"2600724","name":"VALLEY ROCK PIT"},"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":"2600724|M01695|1950-01-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M01695","name":"Olson Donald"},"object":{"type":"operator","id":"L01882","name":"Valley Sand & Gravel Company"},"validFrom":"1950-01-01","validTo":"1983-07-18","current":false,"derived":true,"evidenceMineId":"2600724","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2600724|L01882|1950-01-01|M01695|1950-01-01|120377"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L06663","name":"Calhoon'S Sand & Gravel"},"object":{"type":"mine","id":"2600724","name":"VALLEY ROCK PIT"},"validFrom":"1983-07-19","validTo":"1997-07-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2600724|L06663|1983-07-19|1997-07-30"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M05311","name":"Calhoon Lee"},"object":{"type":"mine","id":"2600724","name":"VALLEY ROCK PIT"},"validFrom":"1983-07-19","validTo":"1997-07-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2600724|M05311|1983-07-19|1997-07-30"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M05311","name":"Calhoon Lee"},"object":{"type":"operator","id":"L06663","name":"Calhoon'S Sand & Gravel"},"validFrom":"1983-07-19","validTo":"1997-07-30","current":false,"derived":true,"evidenceMineId":"2600724","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2600724|L06663|1983-07-19|M05311|1983-07-19|134149"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L15443","name":"Valley Rock & Sand Inc"},"object":{"type":"mine","id":"2600724","name":"VALLEY ROCK PIT"},"validFrom":"1997-07-31","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2600724|L15443|1997-07-31|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M11774","name":"Mendel Lisa Et Al"},"object":{"type":"mine","id":"2600724","name":"VALLEY ROCK PIT"},"validFrom":"1997-07-31","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2600724|M11774|1997-07-31|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M11774","name":"Mendel Lisa Et Al"},"object":{"type":"operator","id":"L15443","name":"Valley Rock & Sand Inc"},"validFrom":"1997-07-31","validTo":null,"current":true,"derived":true,"evidenceMineId":"2600724","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2600724|L15443|1997-07-31|M11774|1997-07-31|152378"}}],"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":"1999-04-12","lastDate":"1999-04-12","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":"1950-01-01","lastDate":"1997-07-31","metrics":{"recentRows":0,"currentOperatorTenures":1,"completedOperatorTenures":2},"periods":{},"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/2600724/safety","description":"Full-period safety series, top CFR sections and paginated activity. Requires PostgreSQL."},"silica":{"href":"/api/v1/mines/2600724/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":"2600724","dataSource":"postgres","snapshotId":"2026-10-13T11:19:05.459773+00:00","completedAt":"2026-10-13T11:26:59.401Z","sourceCount":20,"totalRows":17906804}}