Bonanza Mines safety activity
MSHA violations, accident reports and inspections.
Safety activity
Regular Safety and Health Inspection
50.5 on-site hours reported
Handtools (nonpowered)
Days 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.
Inspection.
30 CFR 57.4201(a)(1) · $151.00 proposed penalty
Regular Safety and Health Inspection
49.0 on-site hours reported
Slip or fall of person
Days 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.
Inspection.
30 CFR 57.4201(a)(1) · $151.00 proposed penalty
Electrical conductors.
30 CFR 57.12004 · Significant and substantial (S&S) · $151.00 proposed penalty
Safety defects; examination, correction and records.
30 CFR 57.14100(b) · $151.00 proposed penalty
Regular Safety and Health Inspection
52.5 on-site hours reported
Permissible exposure level.
30 CFR 62.130(a) · $151.00 proposed penalty
Regular Safety and Health Inspection
69.0 on-site hours reported
Compliance Follow-up Inspection
0.0 on-site hours reported
Testing grounding systems.
30 CFR 57.12028 · $151.00 proposed penalty
Warning signs.
30 CFR 56.4101 · $151.00 proposed penalty
Regular Safety and Health Inspection
30.0 on-site hours reported
Identification of power switches.
30 CFR 56.12018 · $151.00 proposed penalty
Inspection.
30 CFR 57.4201(a)(2) · $151.00 proposed penalty
Inspection.
30 CFR 57.4201(a)(1) · $151.00 proposed penalty
Grounding circuit enclosures.
30 CFR 57.12025 · $151.00 proposed penalty
Electrical conductors.
30 CFR 57.12004 · $151.00 proposed penalty
Regular Safety and Health Inspection
82.3 on-site hours reported
Compliance Follow-up Inspection
6.0 on-site hours reported
Permissible exposure level.
30 CFR 62.130(a) · $151.00 proposed penalty
Permissible exposure level.
30 CFR 62.130(a) · $151.00 proposed penalty
Shaft inspection and repair.
30 CFR 57.19109 · Significant and substantial (S&S) · $755.00 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.
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.