{"data":{"schemaVersion":"realm.mine-profile.v1","generatedAt":"2026-10-13T11:26:59.401Z","identity":{"mine_id":"1302361","name":"Knife River Stripping Crew","status":"Abandoned","status_date":"2011-06-27","mine_type":"Surface","coal_metal":"M","commodity":"Construction Sand and Gravel","state":"IA","county":"Woodbury","nearest_town":"Decorah","operator_id":"L00546","operator_name":"Knife River Midwest","controller_id":"M09717","controller_name":"MDU Resources Group Inc","district":"M4","office":"Duluth District","employees":0,"latitude":null,"longitude":null},"coverage":{"contributingSources":11,"registeredSources":20,"sourceRows":32},"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":"1302361","name":"Knife River Stripping Crew"},"operator":{"type":"operator","id":"L00546","name":"Knife River Midwest"},"controller":{"type":"controller","id":"M09717","name":"MDU Resources Group Inc"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00465","name":"Jeff C Roverud et al"},"object":{"type":"mine","id":"1302361","name":"Knife River Stripping Crew"},"validFrom":"1950-01-01","validTo":"2004-02-04","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1302361|M00465|1950-01-01|2004-02-04"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M09717","name":"MDU Resources Group Inc"},"object":{"type":"mine","id":"1302361","name":"Knife River Stripping Crew"},"validFrom":"2004-02-05","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1302361|M09717|2004-02-05|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L00546","name":"Knife River Midwest"},"object":{"type":"mine","id":"1302361","name":"Knife River Stripping Crew"},"validFrom":"2008-02-20","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1302361|L00546|2008-02-20|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00465","name":"Jeff C Roverud et al"},"object":{"type":"operator","id":"L00546","name":"Knife River Midwest"},"validFrom":"2008-02-20","validTo":"2004-02-04","current":false,"derived":true,"evidenceMineId":"1302361","intervalAnomaly":true,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1302361|L00546|2008-02-20|M00465|1950-01-01|111501"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00465","name":"Curtis G Roverud et al"},"object":{"type":"operator","id":"L00546","name":"Knife River Midwest"},"validFrom":"2008-02-20","validTo":"2004-02-04","current":false,"derived":true,"evidenceMineId":"1302361","intervalAnomaly":true,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1302361|L00546|2008-02-20|M00465|1950-01-01|111502"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M09717","name":"MDU Resources Group Inc"},"object":{"type":"operator","id":"L00546","name":"Knife River Midwest"},"validFrom":"2008-02-20","validTo":null,"current":true,"derived":true,"evidenceMineId":"1302361","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1302361|L00546|2008-02-20|M09717|2004-02-05|147350"}}],"coverage":{"historyRecords":3,"edgeCount":6,"intervalAnomalies":2,"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":"2011-06-27","lastDate":"2011-06-27","metrics":{},"periods":{},"recentRecords":[]},{"id":"msha-assessed-violations","name":"Assessed Violations","domains":["compliance","legal"],"products":["penalty lifecycle","paid and outstanding amounts","assessment aging"],"rowCount":3,"firstDate":"2008-02-20","lastDate":"2008-04-22","metrics":{"ss":1,"delinquent":3,"recentRows":0,"paidPenalty":300,"proposedPenalty":300,"currentAssessment":300},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"380156","VIOLATION_NO":"7837198","ISSUE_DT":"04/22/2008","CFR_STANDARD_CD":"56.14213(a)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"100.00","CURRENT_ASSESSMENT_AMT":"100.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2008-04-22"},{"SOURCE_ROW_NUMBER":"380079","VIOLATION_NO":"7837107","ISSUE_DT":"02/21/2008","CFR_STANDARD_CD":"56.12032","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"100.00","CURRENT_ASSESSMENT_AMT":"100.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2008-02-21"},{"SOURCE_ROW_NUMBER":"380080","VIOLATION_NO":"7837114","ISSUE_DT":"02/20/2008","CFR_STANDARD_CD":"56.4101","SIG_SUB_IND":"Y","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"100.00","CURRENT_ASSESSMENT_AMT":"100.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2008-02-20"}]},{"id":"msha-civil-penalty-dockets-decisions","name":"Civil Penalty Dockets and Decisions","domains":["compliance","legal"],"products":["docket lineage","decision outcomes","citation packet precedent"],"rowCount":3,"firstDate":"2009-07-16","lastDate":"2009-07-30","metrics":{"appeals":0,"decisions":3,"recentRows":0,"decisionPenalty":300,"originalPenalty":300},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"225794","VIOLATION_NO":"7837198","DOCKET_NO":"CENT 2008-706M","DECISION_DT":"07/30/2009","DECISION_TYPE_CODE_DESC":"Settlement","ORIGINAL_PENALTY_AMT":"100.00","DECISION_PENALTY_AMT":"100.00","JUDGE_FIRST_NAME":"Robert","JUDGE_LAST_NAME":"Lesnick","sourceDate":"2009-07-30"},{"SOURCE_ROW_NUMBER":"220394","VIOLATION_NO":"7837107","DOCKET_NO":"CENT 2008-569M","DECISION_DT":"07/16/2009","DECISION_TYPE_CODE_DESC":"Settlement","ORIGINAL_PENALTY_AMT":"100.00","DECISION_PENALTY_AMT":"100.00","JUDGE_FIRST_NAME":"Richard","JUDGE_LAST_NAME":"Manning","sourceDate":"2009-07-16"},{"SOURCE_ROW_NUMBER":"23489","VIOLATION_NO":"7837114","DOCKET_NO":"CENT 2008-569M","DECISION_DT":"07/16/2009","DECISION_TYPE_CODE_DESC":"Settlement","ORIGINAL_PENALTY_AMT":"100.00","DECISION_PENALTY_AMT":"100.00","JUDGE_FIRST_NAME":"Richard","JUDGE_LAST_NAME":"Manning","sourceDate":"2009-07-16"}]},{"id":"msha-conferences","name":"Conferences","domains":["compliance","legal"],"products":["conference history","post-issuance changes","citation lifecycle"],"rowCount":1,"firstDate":"2008-05-07","lastDate":"2008-05-07","metrics":{"linkedIssuances":1},"periods":{},"recentRecords":[]},{"id":"msha-contested-violations","name":"Contested Violations","domains":["compliance","legal"],"products":["contest status","time to resolution","contested-rate context"],"rowCount":3,"firstDate":"2008-02-20","lastDate":"2008-04-22","metrics":{"decisions":3,"ssChanged":1,"recentRows":0,"decisionPenalty":300,"proposedPenalty":300},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"349478","CITATION_NO":"7837198","CITATION_ISSUE_DT":"04/22/2008","DOCKET_NO":"CENT 2008-706M","DECISION_DT":"07/30/2009","CFR_STANDARD_CODE":"56.14213(a)","ORIGINAL_SIG_SUB_IND":"Y","DECISION_SIG_SUB_IND":"N","PROPOSED_PENALTY_AMT":"100.00","DECISION_PENALTY_AMT":"100.00","sourceDate":"2008-04-22"},{"SOURCE_ROW_NUMBER":"120207","CITATION_NO":"7837107","CITATION_ISSUE_DT":"02/21/2008","DOCKET_NO":"CENT 2008-569M","DECISION_DT":"07/16/2009","CFR_STANDARD_CODE":"56.12032","ORIGINAL_SIG_SUB_IND":"N","DECISION_SIG_SUB_IND":"N","PROPOSED_PENALTY_AMT":"100.00","DECISION_PENALTY_AMT":"100.00","sourceDate":"2008-02-21"},{"SOURCE_ROW_NUMBER":"231577","CITATION_NO":"7837114","CITATION_ISSUE_DT":"02/20/2008","DOCKET_NO":"CENT 2008-569M","DECISION_DT":"07/16/2009","CFR_STANDARD_CODE":"56.4101","ORIGINAL_SIG_SUB_IND":"Y","DECISION_SIG_SUB_IND":"Y","PROPOSED_PENALTY_AMT":"100.00","DECISION_PENALTY_AMT":"100.00","sourceDate":"2008-02-20"}]},{"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":"2008-02-20","lastDate":"2008-02-20","metrics":{"recentRows":0,"currentOperatorTenures":3,"completedOperatorTenures":0},"periods":{},"recentRecords":[]},{"id":"msha-inspections","name":"Inspections","domains":["safety","compliance"],"products":["inspection mix","on-site hours","event context","citation rate denominator"],"rowCount":4,"firstDate":"2008-02-20","lastDate":"2011-06-27","metrics":{"inspectors":4,"recentRows":0,"onSiteHours":22.5,"inspectionHours":46,"inspectionSamples":0},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"370045","EVENT_NO":"6573636","INSPECTION_BEGIN_DT":"06/27/2011","INSPECTION_END_DT":"06/27/2011","ACTIVITY_CODE":"E16","ACTIVITY":"Spot Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":".5","SUM_TOTAL_ON_SITE_HOURS":".5","sourceDate":"2011-06-27"},{"SOURCE_ROW_NUMBER":"1055676","EVENT_NO":"1009235","INSPECTION_BEGIN_DT":"04/22/2008","INSPECTION_END_DT":"04/23/2008","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"16","SUM_TOTAL_ON_SITE_HOURS":"7","sourceDate":"2008-04-22"},{"SOURCE_ROW_NUMBER":"440683","EVENT_NO":"1009219","INSPECTION_BEGIN_DT":"03/05/2008","INSPECTION_END_DT":"03/05/2008","ACTIVITY_CODE":"E15","ACTIVITY":"Compliance Follow-up Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"4.5","SUM_TOTAL_ON_SITE_HOURS":"2","sourceDate":"2008-03-05"},{"SOURCE_ROW_NUMBER":"212457","EVENT_NO":"1009214","INSPECTION_BEGIN_DT":"02/20/2008","INSPECTION_END_DT":"02/21/2008","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"25","SUM_TOTAL_ON_SITE_HOURS":"13","sourceDate":"2008-02-20"}]},{"id":"msha-mine-production-quarterly","name":"Mine Employment and Production — Quarterly","domains":["production","safety","compliance"],"products":["production trend","employee hours","rate denominators","seasonality"],"rowCount":8,"firstDate":null,"lastDate":null,"metrics":{},"periods":{"2008-Q4":{"hours":602,"employees":3,"production":0},"2008-Q3":{"hours":720,"employees":3,"production":0},"2008-Q2":{"hours":1330,"employees":4,"production":0},"2008-Q1":{"hours":3286,"employees":12,"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":2,"firstDate":null,"lastDate":null,"metrics":{},"periods":{"2008":{"hours":5938,"employees":6,"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-violations","name":"Violations","domains":["compliance","safety","legal"],"products":["citation and order record","condition text","Title 30 linkage","abatement patterns"],"rowCount":3,"firstDate":"2008-02-20","lastDate":"2008-04-22","metrics":{"ss":1,"amountDue":300,"contested":3,"amountPaid":300,"recentRows":0,"section104d":0,"unterminated":0,"proposedPenalty":300},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"677415","VIOLATION_NO":"7837198","VIOLATION_ISSUE_DT":"04/22/2008","SIG_SUB":"N","PART_SECTION":"56.14213(a)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"LostDays","NO_AFFECTED":"4","NEGLIGENCE":"LowNegligence","TERMINATION_DT":"04/22/2008","PROPOSED_PENALTY":"100","AMOUNT_DUE":"100","AMOUNT_PAID":"100","CONTESTED_IND":"Y","DOCKET_NO":"CENT 2008-706M","sourceDate":"2008-04-22"},{"SOURCE_ROW_NUMBER":"677413","VIOLATION_NO":"7837107","VIOLATION_ISSUE_DT":"02/21/2008","SIG_SUB":"N","PART_SECTION":"56.12032","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"LowNegligence","TERMINATION_DT":"02/21/2008","PROPOSED_PENALTY":"100","AMOUNT_DUE":"100","AMOUNT_PAID":"100","CONTESTED_IND":"Y","DOCKET_NO":"CENT 2008-569M","sourceDate":"2008-02-21"},{"SOURCE_ROW_NUMBER":"677414","VIOLATION_NO":"7837114","VIOLATION_ISSUE_DT":"02/20/2008","SIG_SUB":"Y","PART_SECTION":"56.4101","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Reasonably","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"LowNegligence","TERMINATION_DT":"03/05/2008","PROPOSED_PENALTY":"100","AMOUNT_DUE":"100","AMOUNT_PAID":"100","CONTESTED_IND":"Y","DOCKET_NO":"CENT 2008-569M","sourceDate":"2008-02-20"}]}],"safety":{"href":"/api/v1/mines/1302361/safety","description":"Full-period safety series, top CFR sections and paginated activity. Requires PostgreSQL."},"silica":{"href":"/api/v1/mines/1302361/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":[{"chapter":"I","heading":"Ventilation and shielding for welding.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14213","part":"56","subchapter":"K","subpart":"M","id":"56.14213","citation":"30 CFR 56.14213","chapterHeading":"CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","subchapterHeading":"SUBCHAPTER K—METAL AND NONMETAL MINE SAFETY AND HEALTH","partHeading":"PART 56—SAFETY AND HEALTH STANDARDS—SURFACE METAL AND NONMETAL MINES","subpartHeading":"","text":null,"occurrenceCount":1},{"chapter":"I","heading":"Inspection and cover plates.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12032","part":"56","subchapter":"K","subpart":"K","id":"56.12032","citation":"30 CFR 56.12032","chapterHeading":"CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","subchapterHeading":"SUBCHAPTER K—METAL AND NONMETAL MINE SAFETY AND HEALTH","partHeading":"PART 56—SAFETY AND HEALTH STANDARDS—SURFACE METAL AND NONMETAL MINES","subpartHeading":"","text":null,"occurrenceCount":1},{"chapter":"I","heading":"Warning signs.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4101","part":"56","subchapter":"K","subpart":"C","id":"56.4101","citation":"30 CFR 56.4101","chapterHeading":"CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","subchapterHeading":"SUBCHAPTER K—METAL AND NONMETAL MINE SAFETY AND HEALTH","partHeading":"PART 56—SAFETY AND HEALTH STANDARDS—SURFACE METAL AND NONMETAL MINES","subpartHeading":"","text":null,"occurrenceCount":1}],"fullCorpus":"/data/title30-sections.json"}}},"meta":{"representation":"json","mineId":"1302361","dataSource":"postgres","snapshotId":"2026-10-13T11:19:05.459773+00:00","completedAt":"2026-10-13T11:26:59.401Z","sourceCount":20,"totalRows":17906804}}