{"data":{"schemaVersion":"realm.mine-profile.v1","generatedAt":"2026-10-13T11:26:59.401Z","identity":{"mine_id":"4401862","name":"No 3 Prep Plant","status":"Abandoned","status_date":"1988-03-08","mine_type":"Underground","coal_metal":"C","commodity":"Coal (Bituminous)","state":"VA","county":"Dickenson","nearest_town":"Norton","operator_id":"P10715","operator_name":"Rapoca Energy Company","controller_id":"C08129","controller_name":"M A Hanna Company; W R Grace Company","district":"C05","office":"Vansant VA Field Office","employees":0,"latitude":37.35,"longitude":-82.0417},"coverage":{"contributingSources":3,"registeredSources":20,"sourceRows":7},"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":"4401862","name":"No 3 Prep Plant"},"operator":{"type":"operator","id":"P10715","name":"Rapoca Energy Company"},"controller":{"type":"controller","id":"C08129","name":"M A Hanna Company; W R Grace Company"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"P00579","name":"Black Watch Coal Corp"},"object":{"type":"mine","id":"4401862","name":"No 3 Prep Plant"},"validFrom":"1950-01-01","validTo":"1976-03-29","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4401862|P00579|1950-01-01|1976-03-29"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C00113","name":"Fields Resources Inc"},"object":{"type":"mine","id":"4401862","name":"No 3 Prep Plant"},"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":"4401862|C00113|1950-01-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C00113","name":"Fields Resources Inc"},"object":{"type":"operator","id":"P00579","name":"Black Watch Coal Corp"},"validFrom":"1950-01-01","validTo":"1976-03-29","current":false,"derived":true,"evidenceMineId":"4401862","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4401862|P00579|1950-01-01|C00113|1950-01-01|44256"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C00112","name":"Excello Coal Corp"},"object":{"type":"mine","id":"4401862","name":"No 3 Prep Plant"},"validFrom":"1975-08-13","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4401862|C00112|1975-08-13|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P00167","name":"Excello Coal Corp"},"object":{"type":"mine","id":"4401862","name":"No 3 Prep Plant"},"validFrom":"1976-03-30","validTo":"1977-12-18","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4401862|P00167|1976-03-30|1977-12-18"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C00112","name":"Excello Coal Corp"},"object":{"type":"operator","id":"P00167","name":"Excello Coal Corp"},"validFrom":"1976-03-30","validTo":"1977-12-18","current":false,"derived":true,"evidenceMineId":"4401862","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4401862|P00167|1976-03-30|C00112|1975-08-13|44229"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P08510","name":"Black Watch/Black Diamond Coal Corp"},"object":{"type":"mine","id":"4401862","name":"No 3 Prep Plant"},"validFrom":"1977-12-19","validTo":"1980-06-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4401862|P08510|1977-12-19|1980-06-30"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C00113","name":"Fields Resources Inc"},"object":{"type":"operator","id":"P08510","name":"Black Watch/Black Diamond Coal Corp"},"validFrom":"1977-12-19","validTo":"1980-06-30","current":false,"derived":true,"evidenceMineId":"4401862","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4401862|P08510|1977-12-19|C00113|1950-01-01|44257"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C08129","name":"M A Hanna Company et al"},"object":{"type":"mine","id":"4401862","name":"No 3 Prep Plant"},"validFrom":"1980-06-26","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4401862|C08129|1980-06-26|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P10715","name":"Rapoca Energy Company"},"object":{"type":"mine","id":"4401862","name":"No 3 Prep Plant"},"validFrom":"1980-07-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4401862|P10715|1980-07-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C08129","name":"M A Hanna Company et al"},"object":{"type":"operator","id":"P10715","name":"Rapoca Energy Company"},"validFrom":"1980-07-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"4401862","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4401862|P10715|1980-07-01|C08129|1980-06-26|76420"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C08129","name":"W R Grace Company et al"},"object":{"type":"operator","id":"P10715","name":"Rapoca Energy Company"},"validFrom":"1980-07-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"4401862","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4401862|P10715|1980-07-01|C08129|1980-06-26|76421"}}],"coverage":{"historyRecords":5,"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":"1988-03-08","lastDate":"1988-03-08","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":"1950-01-01","lastDate":"1980-07-01","metrics":{"recentRows":0,"currentOperatorTenures":2,"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/4401862/safety","description":"Full-period safety series, top CFR sections and paginated activity. Requires PostgreSQL."},"silica":{"href":"/api/v1/mines/4401862/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":"4401862","dataSource":"postgres","snapshotId":"2026-10-13T11:19:05.459773+00:00","completedAt":"2026-10-13T11:26:59.401Z","sourceCount":20,"totalRows":17906804}}