Big Horn Coal Co: 33 reportable incidents operator
Controlled by
Kiewit Peter Sons' Inc
MSHA operator ID: P02453
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- Fatalities
- 0
- Total incidents
- 33
- Mines on record
- 1
- Years on record
- 1983–1999
Inspection activity
MSHA inspections since 2000
4
inspections on record
22
inspection hours
n/a
citations per 100 inspection hours
ⓘ
This rate is recorded citations divided by MSHA inspection hours, per 100 hours. It reflects inspection effort, not mine size or production.Rate withheld: 22 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
Injury rate, 2000
ⓘ
This rate is reportable injury cases per 100 full-time-equivalent workers per year, computed as 200,000 times cases divided by MSHA operator-reported employee-hours. Cases are injuries MSHA graded degree 01 through 07; accident-only events that hurt no one are excluded, and so are contractor injuries, whose hours do not attach to a single mine. Rates begin in 2000, when quarterly employment reporting starts, and are withheld below 20,000 hours in a year.0.00
total case rate
0.00
days-away rate
0.000
fatality rate
No reportable injury cases in any year shown. Employee-hours were reported in each of those years, so these are true zeros rather than missing data. Citations, listed in the compliance record above, are inspector-found violations and are counted separately from worker injuries.
Below average. The US coal mining average was 7.74 and the all-US-mining average was 5.64 cases per 100 workers.
Under 100,000 employee-hours were reported that year, so a single case moves the rate by two or more. Read the figure as approximate.
Source: injury cases from MSHA accident and injury records; employee-hours from MSHA quarterly employment reports. Rate is cases per 100 full-time-equivalent workers, operator employees only.
Health sampling
ⓘ
A sample is a point in time compliance measurement, not an individual exposure history. These figures describe MSHA sampling records and do not establish causation or personal dose.Respirable coal dust
ⓘ
Respirable coal dust and silica figures cover coal facilities. Dust compliance is measured against the current 1.5 mg/m3 standard; samples predating the 2014 standard are included, so compliance rates are a coarse historical signal.
Last sampled: 2000-08-03, 26 years ago
ⓘ
Respirable coal dust and silica figures cover coal facilities. Dust compliance is measured against the current 1.5 mg/m3 standard; samples predating the 2014 standard are included, so compliance rates are a coarse historical signal.100%
within 1.5 mg/m3
3
samples
0.51
dust max (mg/m3)
3 samples taken by MSHA inspectors, 0 by the operator.
Most-sampled occupations
- BULLDOZER OPERATOR1
- MECHANIC1
- SCRAPPER OPERATOR1
Source: MSHA respirable dust, quartz, and noise sampling records, updated weekly.
Top causes
- HANDLING OF MATERIALS 12 non-fatal
- POWERED HAULAGE 8 non-fatal
- MACHINERY 7 non-fatal
- SLIP OR FALL OF PERSON 3 non-fatal
- HANDTOOLS (NONPOWERED) 2 non-fatal
- EXPLOSIVES AND BREAKING AGENTS 1 non-fatal
Incident timeline
1999
1
1997
2
1996
2
1995
2
1993
3
1992
2
1990
1
1989
1
1988
1
1987
2
1986
5
1985
3
1984
6
1983
2
Mines on record
For insurers, brokers, and safety consultants
Where Big Horn Coal Co stands on silica, penalties, and injury rate
MSHA's standard limits respirable silica to 50 micrograms per cubic metre, but MSHA publishes dust and quartz as separate files and never the silica figure itself. We derive it per sample, score it against the limit, and set the operator's injury rate against a benchmark built from the full MSHA operator record. With the 26-year penalty trail, contest posture, and fatality history. Delivered as a PDF with the underlying data as CSV.
The federal record itself stays free on this site. What costs money, and why.