NR HAMM QUARRY INC safety activity
MSHA violations, accident reports and inspections across the current mine portfolio.
Safety activity
Regular Safety and Health Inspection
Knoxville Mine · 13022176.5 on-site hours reported
Brakes.
Knoxville Mine · 130221730 CFR 57.14101(a)(2) · $151.00 proposed penalty
Ventilation plan.
Knoxville Mine · 130221730 CFR 57.8520 · $151.00 proposed penalty
Underground evacuation instruction.
Knoxville Mine · 130221730 CFR 57.4363(d) · $151.00 proposed penalty
Underground evacuation drills.
Knoxville Mine · 130221730 CFR 57.4361(a) · Significant and substantial (S&S) · $959.00 proposed penalty
Correction of hazardous conditions.
Knoxville Mine · 130221730 CFR 57.3200 · Significant and substantial (S&S) · $288.00 proposed penalty
Main facilities.
Knoxville Mine · 130221730 CFR 57.6160(a)(2) · $151.00 proposed penalty
Correction of hazardous conditions.
Knoxville Mine · 130221730 CFR 57.3200 · $151.00 proposed penalty
Escape and evacuation plans.
Knoxville Mine · 130221730 CFR 57.11053(a) · $193.00 proposed penalty
Regular Safety and Health Inspection
Knoxville Mine · 130221738.3 on-site hours reported
Spot Inspection
Knoxville Mine · 13022170.0 on-site hours reported
General instructions for completing MSHA Form 7000-1.
Knoxville Mine · 130221730 CFR 50.20-1 · $151.00 proposed penalty
Regular Safety and Health Inspection
Knoxville Mine · 13022175.0 on-site hours reported
Fall of roof or back
Knoxville Mine · 1302217Days away from work only
Accident narrative
The underground mine had a cave-in and employee is experiencing ringing of the left ear and headaches caused by the loud noise and air pressure.
Fall of roof or back
Knoxville Mine · 1302217Days away from work only
Accident narrative
The underground mine had a cave-in and the employee is experiencing ringing in the left ear and headaches caused by the loud noise and air pressure.
Fall of roof or back
Knoxville Mine · 1302217Accident only
Accident narrative
An unplanned cave-in / release of material occurred underground during the second shift. During the second shift employees were loading shot rock and transporting to surface storage area when employees heard material falling and an accumulation of dust appeared in their area.
Non-Fatal Accident Investigation
Knoxville Mine · 130221728.0 on-site hours reported
Violation — cited standard not reported
Knoxville Mine · 1302217Parking procedures for unattended equipment.
Knoxville Mine · 130221730 CFR 57.14207 · $151.00 proposed penalty
Construction and maintenance of guards.
Knoxville Mine · 130221730 CFR 56.14112(a) · $151.00 proposed penalty
Regular Safety and Health Inspection
Knoxville Mine · 130221726.8 on-site hours reported
Construction and maintenance of guards.
Knoxville Mine · 130221730 CFR 56.14112(a) · $151.00 proposed penalty
Spillage and leakage.
Knoxville Mine · 130221730 CFR 57.4102 · $151.00 proposed penalty
Verbal Hazard Complaint Inspections
Knoxville Mine · 13022173.3 on-site hours reported
103 (g) Written Notification Hazard Complaint Inspectio
Knoxville Mine · 13022173.5 on-site hours reported
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.