{"data":{"schemaVersion":"realm.mine-profile.v1","generatedAt":"2026-10-13T11:26:59.401Z","identity":{"mine_id":"4703161","name":"#5734 Nordberg Impactor","status":"Abandoned","status_date":"2004-11-08","mine_type":"Surface","coal_metal":"M","commodity":"Construction Sand and Gravel","state":"WI","county":"Eau Claire","nearest_town":"Closing","operator_id":"L03018","operator_name":"American Materials Corp","controller_id":"M02473","controller_name":"Paul T  Ayres","district":"M4","office":"Duluth District","employees":0,"latitude":null,"longitude":null},"coverage":{"contributingSources":8,"registeredSources":20,"sourceRows":61},"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":"4703161","name":"#5734 Nordberg Impactor"},"operator":{"type":"operator","id":"L03018","name":"American Materials Corp"},"controller":{"type":"controller","id":"M02473","name":"Paul T  Ayres"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M02473","name":"Paul T  Ayres"},"object":{"type":"mine","id":"4703161","name":"#5734 Nordberg Impactor"},"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":"4703161|M02473|1950-01-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L03018","name":"American Materials Corp"},"object":{"type":"mine","id":"4703161","name":"#5734 Nordberg Impactor"},"validFrom":"1998-08-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4703161|L03018|1998-08-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M02473","name":"Paul T  Ayres"},"object":{"type":"operator","id":"L03018","name":"American Materials Corp"},"validFrom":"1998-08-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"4703161","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4703161|L03018|1998-08-01|M02473|1950-01-01|125615"}}],"coverage":{"historyRecords":1,"edgeCount":3,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"sources":[{"id":"msha-accidents","name":"Accident, Injuries, and Illnesses","domains":["safety","contractors"],"products":["incident trends","severity rates","equipment patterns","peer denominators"],"rowCount":3,"firstDate":"2000-05-08","lastDate":"2001-09-20","metrics":{"daysLost":0,"injuries":3,"fatalities":0,"recentRows":0,"restrictedDays":5,"contractorRecords":0},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"266507","DOCUMENT_NO":"220012700028","ACCIDENT_DT":"09/20/2001","DEGREE_INJURY":"DAYS RESTRICTED ACTIVITY ONLY","CLASSIFICATION":"POWERED HAULAGE","ACCIDENT_TYPE":"Over-exertion in pulling or pushing objects","OCCUPATION":"Bulldozer operator, Universal operator, Heavy equipment operator, Operating engineer","NO_INJURIES":"1","NARRATIVE":"EMPLOYEE REPORTED PUSHING ON DUMP LEVER TO LOWER BOX AND A TINGLE WENT DOWN HIS ARM.","sourceDate":"2001-09-20"},{"SOURCE_ROW_NUMBER":"223483","DOCUMENT_NO":"220002070029","ACCIDENT_DT":"07/14/2000","DEGREE_INJURY":"INJURIES DUE TO NATURAL CAUSES","CLASSIFICATION":"OTHER","ACCIDENT_TYPE":"NEC","OCCUPATION":"Bulldozer operator, Universal operator, Heavy equipment operator, Operating engineer","NO_INJURIES":"1","NARRATIVE":"EMPLOYEE HAD A DIABETIC REACTION AND WAS TRANSPORTED FROM SITE BY AMBULANCE.","sourceDate":"2000-07-14"},{"SOURCE_ROW_NUMBER":"249330","DOCUMENT_NO":"220001320058","ACCIDENT_DT":"05/08/2000","DEGREE_INJURY":"NO DYS AWY FRM WRK,NO RSTR ACT","CLASSIFICATION":"SLIP OR FALL OF PERSON","ACCIDENT_TYPE":"Fall to the walkway or working surface","OCCUPATION":"Bulldozer operator, Universal operator, Heavy equipment operator, Operating engineer","NO_INJURIES":"1","NARRATIVE":"EE LOST BALANCE WHILE LIFTING SCREEN FROM RAILS AND FELL ON LEFT HAND.","sourceDate":"2000-05-08"}]},{"id":"msha-addresses","name":"Addresses of Record","domains":["identity","logistics"],"products":["entity resolution","address history","facility geocoding"],"rowCount":1,"firstDate":"2004-11-08","lastDate":"2004-11-08","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":1,"firstDate":"1998-08-01","lastDate":"1998-08-01","metrics":{"recentRows":0,"currentOperatorTenures":1,"completedOperatorTenures":0},"periods":{},"recentRecords":[]},{"id":"msha-inspections","name":"Inspections","domains":["safety","compliance"],"products":["inspection mix","on-site hours","event context","citation rate denominator"],"rowCount":9,"firstDate":"2000-10-25","lastDate":"2003-11-19","metrics":{"inspectors":9,"recentRows":0,"onSiteHours":29,"inspectionHours":58,"inspectionSamples":0},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"829791","EVENT_NO":"0977981","INSPECTION_BEGIN_DT":"11/19/2003","INSPECTION_END_DT":"11/19/2003","ACTIVITY_CODE":"01","ACTIVITY":"REGULAR INSPECTION","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"19","SUM_TOTAL_ON_SITE_HOURS":"13","sourceDate":"2003-11-19"},{"SOURCE_ROW_NUMBER":"669881","EVENT_NO":"0968599","INSPECTION_BEGIN_DT":"08/19/2003","INSPECTION_END_DT":"08/19/2003","ACTIVITY_CODE":"82","ACTIVITY":"AT MINE TRAINING ACTIVITIES","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"1","SUM_TOTAL_ON_SITE_HOURS":"1","sourceDate":"2003-08-19"},{"SOURCE_ROW_NUMBER":"144875","EVENT_NO":"0969608","INSPECTION_BEGIN_DT":"06/24/2003","INSPECTION_END_DT":"06/24/2003","ACTIVITY_CODE":"01","ACTIVITY":"REGULAR INSPECTION","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"6","SUM_TOTAL_ON_SITE_HOURS":"4","sourceDate":"2003-06-24"},{"SOURCE_ROW_NUMBER":"231599","EVENT_NO":"0969784","INSPECTION_BEGIN_DT":"05/28/2003","INSPECTION_END_DT":"05/28/2003","ACTIVITY_CODE":"10","ACTIVITY":"ATTEMPTED INSPECTION","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"3","SUM_TOTAL_ON_SITE_HOURS":"0","sourceDate":"2003-05-28"},{"SOURCE_ROW_NUMBER":"7713","EVENT_NO":"0977588","INSPECTION_BEGIN_DT":"04/09/2003","INSPECTION_END_DT":"04/09/2003","ACTIVITY_CODE":"16","ACTIVITY":"PART 50 AUDIT","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"7","SUM_TOTAL_ON_SITE_HOURS":"2","sourceDate":"2003-04-09"},{"SOURCE_ROW_NUMBER":"627156","EVENT_NO":"0969446","INSPECTION_BEGIN_DT":"11/25/2002","INSPECTION_END_DT":"11/25/2002","ACTIVITY_CODE":"10","ACTIVITY":"ATTEMPTED INSPECTION","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"5","SUM_TOTAL_ON_SITE_HOURS":"0","sourceDate":"2002-11-25"},{"SOURCE_ROW_NUMBER":"512755","EVENT_NO":"0812942","INSPECTION_BEGIN_DT":"04/18/2002","INSPECTION_END_DT":"04/18/2002","ACTIVITY_CODE":"01","ACTIVITY":"REGULAR INSPECTION","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"8","SUM_TOTAL_ON_SITE_HOURS":"4","sourceDate":"2002-04-18"},{"SOURCE_ROW_NUMBER":"145548","EVENT_NO":"0812934","INSPECTION_BEGIN_DT":"03/27/2002","INSPECTION_END_DT":"03/27/2002","ACTIVITY_CODE":"10","ACTIVITY":"ATTEMPTED INSPECTION","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"3","SUM_TOTAL_ON_SITE_HOURS":"0","sourceDate":"2002-03-27"},{"SOURCE_ROW_NUMBER":"820525","EVENT_NO":"0812543","INSPECTION_BEGIN_DT":"10/25/2000","INSPECTION_END_DT":"10/25/2000","ACTIVITY_CODE":"01","ACTIVITY":"REGULAR INSPECTION","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"6","SUM_TOTAL_ON_SITE_HOURS":"5","sourceDate":"2000-10-25"}]},{"id":"msha-mine-production-quarterly","name":"Mine Employment and Production — Quarterly","domains":["production","safety","compliance"],"products":["production trend","employee hours","rate denominators","seasonality"],"rowCount":36,"firstDate":null,"lastDate":null,"metrics":{},"periods":{"2004-Q4":{"hours":406,"employees":2,"production":0},"2004-Q3":{"hours":1205,"employees":3,"production":0},"2004-Q2":{"hours":1329,"employees":2,"production":0},"2004-Q1":{"hours":0,"employees":0,"production":0},"2003-Q4":{"hours":1724,"employees":2,"production":0},"2003-Q3":{"hours":1873,"employees":2,"production":0},"2003-Q2":{"hours":1525,"employees":2,"production":0},"2003-Q1":{"hours":218,"employees":2,"production":0},"2002-Q4":{"hours":1500,"employees":2,"production":0},"2002-Q3":{"hours":2296,"employees":2,"production":0},"2002-Q2":{"hours":1399,"employees":3,"production":0},"2002-Q1":{"hours":841,"employees":5,"production":0}},"recentRecords":[]},{"id":"msha-mine-production-yearly","name":"Mine Employment and Production — Yearly","domains":["production","safety","compliance"],"products":["annual trend","backfill","quarterly reconciliation"],"rowCount":8,"firstDate":null,"lastDate":null,"metrics":{},"periods":{"2000":{"hours":4621,"employees":3,"production":0},"2001":{"hours":4877,"employees":4,"production":0},"2002":{"hours":6036,"employees":4,"production":0},"2003":{"hours":5340,"employees":2,"production":0},"2004":{"hours":2940,"employees":2,"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-personal-health-samples","name":"Metal and Nonmetal Personal Health Samples","domains":["health","safety"],"products":["personal exposure trend","occupation patterns","analyte coverage"],"rowCount":2,"firstDate":"2003-11-19","lastDate":"2003-11-19","metrics":{"recentRows":0,"actionTaken":2,"maxExposureRatio":0,"overExposureLimit":0,"exposureRatioTotal":0},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"44360","EVENT_NO":"0977981","SAMPLE_NO":"000000200309341400","SAMPLE_DATE":"11/19/2003","CONTAMINANT_DESC":"Nuisance dust, total, <1% Qtz","CONCENTRATION":"0000.00","EXPOSURE_LIMIT":"0010.00","C_OVER_E":"00.00","JOB_CD_DESC":"Front-end Loader Operator","ACTION_TAKEN_DESC":"NO ACTION","sourceDate":"2003-11-19"},{"SOURCE_ROW_NUMBER":"44359","EVENT_NO":"0977981","SAMPLE_NO":"000000200309341300","SAMPLE_DATE":"11/19/2003","CONTAMINANT_DESC":"Nuisance dust, total, <1% Qtz","CONCENTRATION":"0000.00","EXPOSURE_LIMIT":"0010.00","C_OVER_E":"00.00","JOB_CD_DESC":"Crusher Oper/Worker","ACTION_TAKEN_DESC":"NO ACTION","sourceDate":"2003-11-19"}]}],"safety":{"href":"/api/v1/mines/4703161/safety","description":"Full-period safety series, top CFR sections and paginated activity. Requires PostgreSQL."},"silica":{"href":"/api/v1/mines/4703161/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":"4703161","dataSource":"postgres","snapshotId":"2026-10-13T11:19:05.459773+00:00","completedAt":"2026-10-13T11:26:59.401Z","sourceCount":20,"totalRows":17906804}}