Mining Incidents

Seminoe I: 4 reportable incidents Coal

Arch Mineral Corp · Surface
Controlled by Ashland Inc
Hanna, Carbon County, WY  ·  Abandoned and Sealed
MSHA Mine ID: 4800514

MSHA record for Seminoe I (mine ID 4800514). Fatalities, non-fatal incidents grouped by year, current operator and controller, and mine context.

Watch this mine

Email me when a new MSHA incident is filed at Seminoe I.

Fatalities
0
Total incidents
4
Years on record
1983–1985
Latest incident
Mar 1985
Ownership history
  1. Arch Mineral Corp 1950 to present
Source: MSHA controller and operator history, updated weekly.

Seminoe I sits in Carbon County, Wyoming, where the Census mining category is 5.6% 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.
Carbon County, Wyoming · Population 14,549
5.6%
Mining share of county employment
$66,721
Median household income
Source: US Census Bureau, American Community Survey 2023 5-year estimates.
No fatalities recorded at this mine.

Reportable incidents

4 on file

1985 · 1 incident

March 1, 1985 WY · Coal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
Arch Mineral Corp · Struck by... (Not Elsewhere Classified)

EMPLOYEE WAS INSTALLING TAILLIGHT BULB IN SCRAPER THE BULB BROKE WHEN THE EMPLOYEE WAS PUSHING ON IT AND THE GLASS CUT FINGER

1984 · 1 incident

July 9, 1984 WY · Coal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech MACHINERY
Arch Mineral Corp · Absorption of radiations, caustics, toxic and noxious substances

EE WAS TRYING TO FIND A HYDRAULIC OIL LEAK. HE WAS FEELING AROUND WITH HIS HAND. WHEN HE FOUND THE LEAK WHICH WAS UNDER PRESSURE HYDRAULIC OIL WAS FORCED INTO HIS HAND THRU A CUT ON HIS FINGER

1983 · 2 incidents

August 20, 1983 WY · Coal welder (shop) HANDLING OF MATERIALS
Arch Mineral Corp · Caught in, under or between a moving and a stationary object

INSTALLING COUPLER ON MOTOR SHAFT.EMPL HAD HAND ON MOTOR SHAFT ,COUPLER SLIPPED DOWN SHAFT,PINCHING FINGERS BETWEEN COUPLER AND TEETH ON SHAFT.

March 3, 1983 WY · Coal welder (shop) HANDTOOLS (NONPOWERED)
Arch Mineral Corp · Struck by... (Not Elsewhere Classified)

EMPLOYEE CUTTING TEMPLATE FROM PIECE OF CARDBOARD WAS PULLING KNIFE TOWARD BODY KNIFE SLIPPED AND HIT THUMB CUT THUMB REQUIRING SUTURES