Knife River - South Dakota safety activity
MSHA violations, accident reports and inspections across the current mine portfolio.
Safety activity
Inspection.
Corson Sand Plant / Quarry · 390147830 CFR 56.4201(a)(2) · $151.00 proposed penalty
Safety procedures for towing.
Corson Sand Plant / Quarry · 390147830 CFR 56.14209(b) · $151.00 proposed penalty
Regular Safety and Health Inspection
Corson Sand Plant / Quarry · 390147819.5 on-site hours reported
Inspection.
Corson Sand Plant / Quarry · 390147830 CFR 56.4201(a)(2) · $151.00 proposed penalty
Safety defects; examination, correction and records.
Corson Sand Plant / Quarry · 390147830 CFR 56.14100(c) · $151.00 proposed penalty
Inspection.
Corson Sand Plant / Quarry · 390147830 CFR 56.4201(a)(2) · $151.00 proposed penalty
Handtools (nonpowered)
Sioux Falls Quarry · 3900008No dys awy frm wrk,no rstr act
Accident narrative
Employee was assisting with the replacement of a head-drum shaft bearing on the #1 screen conveyor on the Portable Plant. The chain that was used to support the head-drum and shaft assembly snapped, striking Tyler Whipple middle finger on left hand, fracturing the 3rd digit / tip of finger.
Regular Safety and Health Inspection
Knife River Portable Plant SD-1 · 39002923.3 on-site hours reported
Electrical conductors.
Sioux Falls Quarry · 390000830 CFR 56.12004 · $151.00 proposed penalty
Regular Safety and Health Inspection
Sioux Falls Quarry · 390000816.3 on-site hours reported
Preparation and submission of MSHA Form 7000-2—Quarterly Employment and Coal Production Report.
Corson Sand Plant / Quarry · 390147830 CFR 50.30(a) · $151.00 proposed penalty
Preparation and submission of MSHA Form 7000-2—Quarterly Employment and Coal Production Report.
Corson Sand Plant / Quarry · 390147830 CFR 50.30(a) · $151.00 proposed penalty
Regular Safety and Health Inspection
Corson Sand Plant / Quarry · 390147810.8 on-site hours reported
Blocking equipment in a raised position.
Corson Sand Plant / Quarry · 390147830 CFR 56.14211(c) · $151.00 proposed penalty
Securing movable parts.
Corson Sand Plant / Quarry · 390147830 CFR 56.14206(b) · $151.00 proposed penalty
Securing movable parts.
Corson Sand Plant / Quarry · 390147830 CFR 56.14206(b) · $151.00 proposed penalty
Regular Safety and Health Inspection
Knife River Portable Plant SD-1 · 39002923.8 on-site hours reported
Handling of materials
Sioux Falls Quarry · 3900008Days restricted activity only
Accident narrative
Team members replacing return roller, shaft began to slip, team member grabbed the shaft, causing pain to the right wrist.
Handling of materials
Corson Sand Plant / Quarry · 3901478No dys awy frm wrk,no rstr act
Accident narrative
Team member installing new exhaust gaskets, bolting up the flanges when debris fell onto and behind safety glasses, into right eye. Flushed eyes at the shop, debris remained behind eyelid.
Regular Safety and Health Inspection
Corson Sand Plant / Quarry · 390147813.5 on-site hours reported
Testing grounding systems.
Sioux Falls Quarry · 390000830 CFR 56.12028 · $177.00 proposed penalty
Identification of power switches.
Sioux Falls Quarry · 390000830 CFR 56.12018 · $151.00 proposed penalty
Regular Safety and Health Inspection
Sioux Falls Quarry · 390000823.8 on-site hours reported
Parking procedures for unattended equipment.
Sioux Falls Quarry · 390000830 CFR 56.14207 · $151.00 proposed penalty
Dump site restraints.
Sioux Falls Quarry · 390000830 CFR 56.9301 · Significant and substantial (S&S) · $267.00 proposed penalty
Sources and definitions
MSHA Violations (issue date), Accidents (accident date) and Inspections (begin date).
Violation titles use current CFR headings to identify the cited rule; they are not the inspector’s account of what happened.
Status is from the current MSHA Mines snapshot, not the selected reporting period. Closed records can retain their last reported controller/operator.
Counts describe published rows, including contractor records; accident records are not distinct incidents or numbers of people injured.
Zero means no matching records in the imported sources, not proof of no events. Historical coverage differs by source; absence before a source begins reporting is not a zero incident rate. Invalid or absent dates and records after the snapshot are excluded.
S&S means SIG_SUB=Y. Fatality records use DEGREE_INJURY_CD=01. Proposed penalties are not final assessed or paid amounts; missing dollar values are omitted.
Inspection hours are SUM_TOTAL_ON_SITE_HOURS attributed to the inspection start date, without supervisor/trainee hours. Missing hours are omitted; a started inspection may still be open.
Portfolio totals use current mine membership, including events before the current owner or operator's tenure.