Mining Incidents

Bonanza No 3 Shaft: 12 reportable incidents Metal/Non-Metal

Controlled by Gordon S Ziegler Jr
Uintah County, UT  ·  Abandoned
MSHA Mine ID: 4201446

MSHA record for Bonanza No 3 Shaft (mine ID 4201446). Fatalities, non-fatal incidents grouped by year, current operator and controller, and mine context.

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Fatalities
0
Total incidents
12
Years on record
1984–1990
Latest incident
Mar 1990
Ownership history
  1. Ziegler Chemical & Mineral Corp 1950 to present
Source: MSHA controller and operator history, updated weekly.

Bonanza No 3 Shaft sits in Uintah County, Utah, where the Census mining category is 12.5% of county employment.

Local economic context
County figures come from the US Census Bureau's American Community Survey, 5-year pooled estimates, so the 2023 vintage covers 2019 through 2023. The Census category is 'mining, quarrying, and oil and gas extraction', which is broader than MSHA jurisdiction and includes oil and gas workers no mine employs. These figures describe the surrounding county, not this mine, and are not a factor in any specific incident.
Uintah County, Utah · Population 36,458
12.5%
Mining share of county employment
$69,861
Median household income
Source: US Census Bureau, American Community Survey 2023 5-year estimates.
No fatalities recorded at this mine.

Reportable incidents

12 on file

1990 · 1 incident

1989 · 7 incidents

March 30, 1989 UT · Metal/Non-Metal ledgeman/hand, quarry man FALL OF ROOF OR BACK
Ziegler Chemical & Mineral Corp · Struck by falling object

A ROCK CAME DOWN THE SLOPE AND HIT HIM ON THE BACK OF BOTH HANDS WHILE HE HAD BOTH HANDS ON THE CHIPPING HAMMER CUTTING HIS L HAND AND BRUISING HIS L HAND

January 6, 1989 UT · Metal/Non-Metal ledgeman/hand, quarry man STEPPING OR KNEELING ON OBJECT
Ziegler Chemical & Mineral Corp · Rubbed or abraded

WHILE WORKING IN THE DRIFT HE WAS WORKING ON HIS KNEES WHEN HE STARTED TO STNA DUP HIS RIGHT KNEE POPPED OUT OF JOINT.HE STRAIGHTENED OUT HIS LEG AND HIS KNEE WENT BACK IN.

1988 · 2 incidents

1987 · 1 incident

1984 · 1 incident