Onyx Corporation safety activity
MSHA violations, accident reports and inspections across the current mine portfolio.
Safety activity
Falling/sliding/rolling materials
Onyx Sterling Pit · 1901284Days away from work only
Accident narrative
Hopper wing of cone crusher was being lifted in place when strap broke and wing struck member in the hard hat and arm.
Handling of materials
Onyx Sterling Pit · 1901284No dys awy frm wrk,no rstr act
Accident narrative
A mechanic working in the garage reported having some dirt in EE's eye. EE was not able to state a specific event on how the dirt got into EE's eye. After flushing the eye out, an appointment with an eye doctor was made so EE could be evaluated. It was determined that EE has a minor scratch on the eye and was prescribed antibiotic eye ointment.
Regular Safety and Health Inspection
Onyx Sterling Pit · 19012848.0 on-site hours reported
Inspection and cover plates.
Onyx Sterling Pit · 190128430 CFR 56.12032 · $151.00 proposed penalty
Slip or fall of person
Onyx Sterling Pit · 1901284Days away from work only
Accident narrative
EE had a knee injury that was exacerbated as EE was walking through the garage after putting oil canisters away in a conex box behind the garage. EE felt a tweak in EE's left knee as EE stepped. On Wednesday 4/8/26 at approx 1PM, this injury was reported to have happened at work, and that it originated while shoveling one month prior near the scalper screen.
Compliance Follow-up Inspection
Onyx Sterling Pit · 19012841.3 on-site hours reported
Compliance Follow-up Inspection
Onyx Sterling Pit · 19012843.0 on-site hours reported
Regular Safety and Health Inspection
Onyx Sterling Pit · 19012841.0 on-site hours reported
Compliance Follow-up Inspection
Onyx Sterling Pit · 19012841.0 on-site hours reported
Inspection.
Onyx Sterling Pit · 190128430 CFR 56.4201(a)(1) · $151.00 proposed penalty
Regular Safety and Health Inspection
Onyx Sterling Pit · 190128414.5 on-site hours reported
Compliance Follow-up Inspection
Onyx Sterling Pit · 19012844.3 on-site hours reported
Written safety program.
Onyx Sterling Pit · 190128430 CFR 56.23002(a) · $62,812.00 proposed penalty
Examination of ground conditions.
Onyx Sterling Pit · 190128430 CFR 56.3401 · Significant and substantial (S&S) · $62,812.00 proposed penalty
Wall, bank, and slope stability.
Onyx Sterling Pit · 190128430 CFR 56.3130 · Significant and substantial (S&S) · $62,812.00 proposed penalty
Correction of hazardous conditions.
Onyx Sterling Pit · 190128430 CFR 56.3200 · Significant and substantial (S&S) · $56,530.00 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.