{"data":{"schemaVersion":"realm.mine-profile.v1","generatedAt":"2026-10-13T11:26:59.401Z","identity":{"mine_id":"3304025","name":"Buckingham","status":"Abandoned","status_date":"2007-03-16","mine_type":"Surface","coal_metal":"C","commodity":"Coal (Bituminous)","state":"OH","county":"Perry","nearest_town":"Shawnee","operator_id":"P22730","operator_name":"Buckingham Mining & Reclamation","controller_id":"C02880","controller_name":"James F  Graham","district":"M2","office":"Warrendale District","employees":0,"latitude":39.697222,"longitude":-82.125},"coverage":{"contributingSources":7,"registeredSources":20,"sourceRows":16},"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":"3304025","name":"Buckingham"},"operator":{"type":"operator","id":"P22730","name":"Buckingham Mining & Reclamation"},"controller":{"type":"controller","id":"C02880","name":"James F  Graham"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"P16964","name":"Buckingham Mining & Reclamation Inc"},"object":{"type":"mine","id":"3304025","name":"Buckingham"},"validFrom":"1985-08-01","validTo":"1994-03-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3304025|P16964|1985-08-01|1994-03-31"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C11990","name":"Gary L  Allen"},"object":{"type":"mine","id":"3304025","name":"Buckingham"},"validFrom":"1985-08-01","validTo":"1994-03-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3304025|C11990|1985-08-01|1994-03-31"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C11990","name":"Gary L  Allen"},"object":{"type":"operator","id":"P16964","name":"Buckingham Mining & Reclamation Inc"},"validFrom":"1985-08-01","validTo":"1994-03-31","current":false,"derived":true,"evidenceMineId":"3304025","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3304025|P16964|1985-08-01|C11990|1985-08-01|85857"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P22730","name":"Buckingham Mining & Reclamation"},"object":{"type":"mine","id":"3304025","name":"Buckingham"},"validFrom":"1994-04-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3304025|P22730|1994-04-01|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C02880","name":"James F  Graham"},"object":{"type":"mine","id":"3304025","name":"Buckingham"},"validFrom":"1994-04-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3304025|C02880|1994-04-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C02880","name":"James F  Graham"},"object":{"type":"operator","id":"P22730","name":"Buckingham Mining & Reclamation"},"validFrom":"1994-04-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"3304025","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3304025|P22730|1994-04-01|C02880|1994-04-01|61086"}}],"coverage":{"historyRecords":2,"edgeCount":6,"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":"2007-03-16","lastDate":"2007-03-16","metrics":{},"periods":{},"recentRecords":[]},{"id":"msha-coal-dust-samples","name":"Coal Dust Samples","domains":["health","safety"],"products":["respirable dust trends","CPDM coverage","void patterns","occupation exposure"],"rowCount":2,"firstDate":"2000-04-10","lastDate":"2000-04-10","metrics":{"recentRows":0,"cpdmSamples":0,"voidSamples":0,"validSamples":2,"maxConcentration":0.94,"concentrationTotal":1.097},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"920851","CASS_NUM":"57248779","SMP_TAKEN_DT":"4/10/2000","CONC":".157","SMP_TYPE_CD_DESC":"NONDESIGNATED WORK POSITION","SMP_USE_CD_DESC":"NOT USED ON INSPECTOR SAMPLES; NOT FOUND ON OPERATOR SAMPLE","VOID_CD_DESC":"SAMPLE NOT VOIDED","OCC_CD_DESC":"HIGHLIFT OPERATOR/FRONT END LOADER","DEVICE_TYPE_CD":"CMDPSU","sourceDate":"2000-04-10"},{"SOURCE_ROW_NUMBER":"203810","CASS_NUM":"57248774","SMP_TAKEN_DT":"4/10/2000","CONC":".94","SMP_TYPE_CD_DESC":"NONDESIGNATED WORK POSITION","SMP_USE_CD_DESC":"NOT USED ON INSPECTOR SAMPLES; NOT FOUND ON OPERATOR SAMPLE","VOID_CD_DESC":"SAMPLE NOT VOIDED","OCC_CD_DESC":"TIPPLE OPERATOR","DEVICE_TYPE_CD":"CMDPSU","sourceDate":"2000-04-10"}]},{"id":"msha-controller-operator-history","name":"Controller and Operator History","domains":["identity","compliance"],"products":["historical ownership attribution","operator transitions","valid-time joins"],"rowCount":2,"firstDate":"1985-08-01","lastDate":"1994-04-01","metrics":{"recentRows":0,"currentOperatorTenures":1,"completedOperatorTenures":1},"periods":{},"recentRecords":[]},{"id":"msha-inspections","name":"Inspections","domains":["safety","compliance"],"products":["inspection mix","on-site hours","event context","citation rate denominator"],"rowCount":4,"firstDate":"2000-04-10","lastDate":"2006-04-14","metrics":{"inspectors":4,"recentRows":0,"onSiteHours":16,"inspectionHours":44,"inspectionSamples":0},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"956378","EVENT_NO":"4358066","INSPECTION_BEGIN_DT":"04/14/2006","INSPECTION_END_DT":"04/17/2006","ACTIVITY_CODE":"E19","ACTIVITY":"Electrical Technical Investigation","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"4","SUM_TOTAL_ON_SITE_HOURS":"0","sourceDate":"2006-04-14"},{"SOURCE_ROW_NUMBER":"561543","EVENT_NO":"4075528","INSPECTION_BEGIN_DT":"04/17/2002","INSPECTION_END_DT":"04/26/2002","ACTIVITY_CODE":"CCA","ACTIVITY":"ROOF CONTROL TECHNICAL INSPECTION","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"20.5","SUM_TOTAL_ON_SITE_HOURS":"5.5","sourceDate":"2002-04-17"},{"SOURCE_ROW_NUMBER":"789117","EVENT_NO":"4067650","INSPECTION_BEGIN_DT":"10/23/2000","INSPECTION_END_DT":"10/23/2000","ACTIVITY_CODE":"CFA","ACTIVITY":"MINE IDLE","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"4","SUM_TOTAL_ON_SITE_HOURS":"1","sourceDate":"2000-10-23"},{"SOURCE_ROW_NUMBER":"409048","EVENT_NO":"4070711","INSPECTION_BEGIN_DT":"04/10/2000","INSPECTION_END_DT":"04/18/2000","ACTIVITY_CODE":"AAA","ACTIVITY":"Regular Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"15.5","SUM_TOTAL_ON_SITE_HOURS":"9.5","sourceDate":"2000-04-10"}]},{"id":"msha-mine-production-quarterly","name":"Mine Employment and Production — Quarterly","domains":["production","safety","compliance"],"products":["production trend","employee hours","rate denominators","seasonality"],"rowCount":4,"firstDate":null,"lastDate":null,"metrics":{},"periods":{"2000-Q4":{"hours":0,"employees":0,"production":0},"2000-Q3":{"hours":0,"employees":0,"production":0},"2000-Q2":{"hours":0,"employees":0,"production":0},"2000-Q1":{"hours":0,"employees":0,"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":[]},{"id":"msha-noise-samples","name":"Noise Samples","domains":["health","safety","equipment"],"products":["hearing exposure","machine and manufacturer patterns","occupation coverage"],"rowCount":2,"firstDate":"2000-04-10","lastDate":"2000-04-10","metrics":{"recentRows":0,"doseOver100":0,"actDoseTotal":99,"pelDoseTotal":48},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"129841","EVENT_NO":"4070711","SURVEY_DATE":"04/10/2000","OCCUPATION_CD_DESC":"TIPPLE OPERATOR","MACHINE_CD":"40","MANUFACTURER_CD":"119","ACT_DOSE_85":"75","PEL_DOSE_90":"38","SURVEY_TYPE":"I","sourceDate":"2000-04-10"},{"SOURCE_ROW_NUMBER":"129840","EVENT_NO":"4070711","SURVEY_DATE":"04/10/2000","OCCUPATION_CD_DESC":"HIGHLIFT OPERATOR/FRONT END LOADER","MACHINE_CD":"18","MANUFACTURER_CD":"018","ACT_DOSE_85":"24","PEL_DOSE_90":"10","SURVEY_TYPE":"I","sourceDate":"2000-04-10"}]}],"safety":{"href":"/api/v1/mines/3304025/safety","description":"Full-period safety series, top CFR sections and paginated activity. Requires PostgreSQL."},"silica":{"href":"/api/v1/mines/3304025/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":"3304025","dataSource":"postgres","snapshotId":"2026-10-13T11:19:05.459773+00:00","completedAt":"2026-10-13T11:26:59.401Z","sourceCount":20,"totalRows":17906804}}