American Gilsonite Company safety activity
MSHA violations, accident reports and inspections across the current mine portfolio.
Safety activity
Regular Safety and Health Inspection
Bonanza Process Plant · 420270233.5 on-site hours reported
Regular Safety and Health Inspection
Bonanza Mines · 420085450.5 on-site hours reported
Handtools (nonpowered)
Bonanza Mines · 4200854Days away from work only
Accident narrative
A miner was using a hammer to nail in 2-inch shaft boards. The miner felt a pop in their shoulder while swinging the hammer. The next day, the miner's bicep was bruised and swollen.
Regular Safety and Health Inspection
COTTONWOOD MINES · 420204421.5 on-site hours reported
Handling of materials
COTTONWOOD MINES · 4202044Days away from work only
Accident narrative
A miner was removing 3"x8"x6' boards from the cage. When the miner turned with boards in their hands, they injured their lower back.
Handtools (nonpowered)
Bonanza Process Plant · 4202702No dys awy frm wrk,no rstr act
Accident narrative
A miner was installing a 6-inch 60D nail into a board. The miner missed the nail and struck their left thumb causing a crushing injury that required stitches.
Inspection.
Bonanza Mines · 420085430 CFR 57.4201(a)(1) · $151.00 proposed penalty
Regular Safety and Health Inspection
Bonanza Mines · 420085449.0 on-site hours reported
Regular Safety and Health Inspection
COTTONWOOD MINES · 420204437.0 on-site hours reported
Slip or fall of person
Bonanza Mines · 4200854Days away from work only
Accident narrative
A miner was standing on a 3"x8"x12' board, mining ore. The board broke under the miner's weight, and the miner rolled their ankle. The ankle sustained a displacement fracture at the bottom of the tibia at the ankle.
Moving machine parts.
Bonanza Process Plant · 420270230 CFR 56.14107(a) · $151.00 proposed penalty
Electric substations and liquid storage facilities.
Bonanza Process Plant · 420270230 CFR 56.4130(b) · $151.00 proposed penalty
Combustible waste.
Bonanza Process Plant · 420270230 CFR 56.4104(a) · $151.00 proposed penalty
Regular Safety and Health Inspection
Bonanza Process Plant · 420270221.5 on-site hours reported
Inspection.
Bonanza Mines · 420085430 CFR 57.4201(a)(1) · $151.00 proposed penalty
Electrical conductors.
Bonanza Mines · 420085430 CFR 57.12004 · Significant and substantial (S&S) · $151.00 proposed penalty
Safety defects; examination, correction and records.
Bonanza Mines · 420085430 CFR 57.14100(b) · $151.00 proposed penalty
Regular Safety and Health Inspection
COTTONWOOD MINES · 420204416.0 on-site hours reported
Regular Safety and Health Inspection
Bonanza Mines · 420085452.5 on-site hours reported
Permissible exposure level.
Bonanza Mines · 420085430 CFR 62.130(a) · $151.00 proposed penalty
Regular Safety and Health Inspection
Bonanza Mines · 420085469.0 on-site hours reported
Regular Safety and Health Inspection
COTTONWOOD MINES · 420204420.0 on-site hours reported
Handtools (nonpowered)
Bonanza Process Plant · 4202702No dys awy frm wrk,no rstr act
Accident narrative
A miner was turning a pipe with a pipe wrench in one hand, and their other hand on the top of the pipe where an elbow was located. The pipe turned faster than the miner expected, and the miners thumb got caught in the elbow, bending it back.
Handling of materials
Bonanza Process Plant · 4202702No dys awy frm wrk,no rstr act
Accident narrative
A miner was conducting an inspection on an agitator. As the agitator turned, a bolt contacted the miner's finger, resulting in lacerations.
Compliance Follow-up Inspection
Bonanza Mines · 42008540.0 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.