M-Class Mining LLC safety activity
MSHA violations, accident reports and inspections across the current mine portfolio.
Safety activity
Ventilation controls.
MC#1 Mine · 110318930 CFR 75.333(c) · $193.00 proposed penalty
Spot Inspections
MC#1 Mine · 1103189103(i) · 7.3 on-site hours reported
Mine ventilation plan; submission and approval.
MC#1 Mine · 110318930 CFR 75.370(a)(1) · $267.00 proposed penalty
Protection from falls of roof, face and ribs.
MC#1 Mine · 110318930 CFR 75.202(a) · $209.00 proposed penalty
Automatic fire sensors.
MC#1 Mine · 110318930 CFR 75.1103-1 · $151.00 proposed penalty
Slippage and sequence switches.
MC#1 Mine · 110318930 CFR 75.1102 · $193.00 proposed penalty
Powered haulage
MC#1 Mine · 1103189Days away from work only
Accident narrative
I.E. stated the Bobcat that they were driving overheated, employee took radiator off machine. Hot anti-freeze burned their inner arm.
Spot Inspection
MC#1 Mine · 11031893.0 on-site hours reported
Electric equipment; examination, testing, and maintenance.
MC#1 Mine · 110318930 CFR 77.502 · $193.00 proposed penalty
Examination and maintenance of firefighting equipment.
MC#1 Mine · 110318930 CFR 77.1110 · $193.00 proposed penalty
Other safeguards.
MC#1 Mine · 110318930 CFR 75.1403 · Significant and substantial (S&S) · $432.00 proposed penalty
Accumulation of combustible materials.
MC#1 Mine · 110318930 CFR 75.400 · $465.00 proposed penalty
Refuge alternatives.
MC#1 Mine · 110318930 CFR 75.1506(g) · Significant and substantial (S&S) · $1,431.00 proposed penalty
Self-rescue devices; use and location requirements.
MC#1 Mine · 110318930 CFR 75.1714-2(b) · $151.00 proposed penalty
Other safeguards.
MC#1 Mine · 110318930 CFR 75.1403
Spot Inspections
MC#1 Mine · 1103189103(i) · 7.0 on-site hours reported
Protection from falls of roof, face and ribs.
MC#1 Mine · 110318930 CFR 75.202(a) · $209.00 proposed penalty
Daily examination of hoisting equipment.
MC#1 Mine · 110318930 CFR 75.1400-3(b)(3) · $193.00 proposed penalty
Daily examination of hoisting equipment.
MC#1 Mine · 110318930 CFR 75.1400-3(b)(2) · $193.00 proposed penalty
Slip or fall of person
MC#1 Mine · 1103189Days away from work only
Accident narrative
The IE was using a prybar and it slipped out causing the IE to fall and land on EE's elbow. The IE continued to work until 10/1/2025 when EE received surgery.
Air quality.
MC#1 Mine · 110318930 CFR 75.321(a)(2) · $193.00 proposed penalty
Spot Inspections
MC#1 Mine · 1103189103(i) · 10.5 on-site hours reported
Belt air course ventilation.
MC#1 Mine · 110318930 CFR 75.350(a)(2) · $193.00 proposed penalty
Storage and handling of combustible materials.
MC#1 Mine · 110318930 CFR 77.1915(b) · $193.00 proposed penalty
Travelways at surface installations.
MC#1 Mine · 110318930 CFR 77.205(e) · $642.00 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.