{"data":{"schemaVersion":"realm.mine-profile.v1","generatedAt":"2026-10-17T06:17:15.228Z","identity":{"mine_id":"1516741","name":"Knee High Mine #1","status":"Abandoned and Sealed","status_date":"1997-09-30","mine_type":"Underground","coal_metal":"C","commodity":"Coal (Bituminous)","state":"KY","county":"Letcher","nearest_town":"Skyline","operator_id":"P23666","operator_name":"Anr Coal Company Llc","controller_id":"C01883","controller_name":"El Paso Energy Corp","district":"C05","office":"Norton VA Field Office","employees":22,"latitude":37.0628,"longitude":-82.9767},"coverage":{"contributingSources":3,"registeredSources":20,"sourceRows":6},"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":"2026-10-17T05:35:58.500035+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":"1516741","name":"Knee High Mine #1"},"operator":{"type":"operator","id":"P23666","name":"Anr Coal Company Llc"},"controller":{"type":"controller","id":"C01883","name":"El Paso Energy Corp"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-17T05:35:58.500035+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"C11021","name":"Elmer  Jent"},"object":{"type":"mine","id":"1516741","name":"Knee High Mine #1"},"validFrom":"1984-06-27","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1516741|C11021|1984-06-27|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C08125","name":"Ronald S  Ratliff"},"object":{"type":"mine","id":"1516741","name":"Knee High Mine #1"},"validFrom":"1988-07-08","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1516741|C08125|1988-07-08|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P15672","name":"Jent & Franks Coal Company Inc"},"object":{"type":"mine","id":"1516741","name":"Knee High Mine #1"},"validFrom":"1989-10-01","validTo":"1992-06-14","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1516741|P15672|1989-10-01|1992-06-14"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C11021","name":"Elmer  Jent"},"object":{"type":"operator","id":"P15672","name":"Jent & Franks Coal Company Inc"},"validFrom":"1989-10-01","validTo":"1992-06-14","current":false,"derived":true,"evidenceMineId":"1516741","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1516741|P15672|1989-10-01|C11021|1984-06-27|83446"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P19607","name":"R S Mining Inc"},"object":{"type":"mine","id":"1516741","name":"Knee High Mine #1"},"validFrom":"1992-06-15","validTo":"1993-04-07","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1516741|P19607|1992-06-15|1993-04-07"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C08125","name":"Ronald S  Ratliff"},"object":{"type":"operator","id":"P19607","name":"R S Mining Inc"},"validFrom":"1992-06-15","validTo":"1993-04-07","current":false,"derived":true,"evidenceMineId":"1516741","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1516741|P19607|1992-06-15|C08125|1988-07-08|76429"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P22294","name":"Cozak Coal Inc"},"object":{"type":"mine","id":"1516741","name":"Knee High Mine #1"},"validFrom":"1993-04-08","validTo":"1993-12-01","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1516741|P22294|1993-04-08|1993-12-01"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C12010","name":"(William) Scott  Moore"},"object":{"type":"mine","id":"1516741","name":"Knee High Mine #1"},"validFrom":"1993-04-08","validTo":"1993-12-01","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1516741|C12010|1993-04-08|1993-12-01"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C12010","name":"(William) Scott  Moore"},"object":{"type":"operator","id":"P22294","name":"Cozak Coal Inc"},"validFrom":"1993-04-08","validTo":"1993-12-01","current":false,"derived":true,"evidenceMineId":"1516741","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1516741|P22294|1993-04-08|C12010|1993-04-08|85921"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P23666","name":"Anr Coal Company Llc"},"object":{"type":"mine","id":"1516741","name":"Knee High Mine #1"},"validFrom":"1993-12-02","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1516741|P23666|1993-12-02|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C01883","name":"El Paso Energy Corp"},"object":{"type":"mine","id":"1516741","name":"Knee High Mine #1"},"validFrom":"1993-12-02","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1516741|C01883|1993-12-02|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C01883","name":"El Paso Energy Corp"},"object":{"type":"operator","id":"P23666","name":"Anr Coal Company Llc"},"validFrom":"1993-12-02","validTo":null,"current":true,"derived":true,"evidenceMineId":"1516741","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1516741|P23666|1993-12-02|C01883|1993-12-02|56723"}}],"coverage":{"historyRecords":4,"edgeCount":12,"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":"1997-09-30","lastDate":"1997-09-30","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":4,"firstDate":"1989-10-01","lastDate":"1993-12-02","metrics":{"recentRows":0,"currentOperatorTenures":1,"completedOperatorTenures":3},"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/1516741/safety","description":"Full-period safety series, top CFR sections and paginated activity. Requires PostgreSQL."},"silica":{"href":"/api/v1/mines/1516741/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":"1516741","dataSource":"postgres","snapshotId":"2026-10-17T05:35:58.500035+00:00","completedAt":"2026-10-17T06:17:15.228Z","sourceCount":20,"totalRows":15450873}}