Darryl Koperna: 79 MSHA citations controller
MSHA controller ID: C10973
Watch this controller
Email me when a new MSHA incident is filed at any mine Darryl Koperna controls.
- Fatalities
- 0
- Total incidents
- 3
- Mines on record
- 2
- Years on record
- 1990–2008
Compliance record
MSHA citations since 2003
79
citations
33
significant & substantial
$205,861
proposed penalties
$47
paid to date
0% of proposed penalties paid to date, a $205,814 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2000
95
inspections on record
2,652
inspection hours
3.0
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.79 citations across 2,652 inspection hours.
Source: MSHA inspections data, updated weekly.
Penalty disposition
ⓘ
Differences between proposed and paid penalties reflect both settlements and conference reductions and amounts still owed. Outstanding is the balance currently owed.$206K
proposed penalties
$206K
current assessed
$47
paid to date
$206K
outstanding
72 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2012-11-07.
Source: MSHA assessed-violations and conference/litigation data, updated weekly.
Violation severity profile
ⓘ
Shares are computed over citations that carry the MSHA gravity and negligence coding; a small share of records are uncoded.45.8%
significant & substantial
22.2%
high negligence or reckless
45.8%
reasonably likely or greater
12.5%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 5.6% low, 72.2% moderate, 19.4% high, 2.8% reckless.
Source: MSHA violations gravity and negligence coding, updated weekly.
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: 2013-02-20, 13 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
211
samples
1.27
dust max (mg/m3)
104 samples taken by MSHA inspectors, 107 by the operator.
Most-sampled occupations
- HAND LOADERS129
- LABORER37
- HOIST ENGINEER/OPERATOR20
Silica (quartz)
Last sampled: 2012-04-11, 14 years ago0.6
silica avg (%)
2
samples
0.8
silica max (%)
Most-sampled occupations
- HAND LOADERS2
Noise
ⓘ
The share counts noise samples whose measured dose exceeded the 90 dBA permissible exposure limit. It describes the sampled workplace, not what reached the miner's ear: hearing conservation programs and the hearing protection worn during the shift are recorded separately and are not reflected here.
Last sampled: 2012-01-12, 14 years ago
ⓘ
The share counts noise samples whose measured dose exceeded the 90 dBA permissible exposure limit. It describes the sampled workplace, not what reached the miner's ear: hearing conservation programs and the hearing protection worn during the shift are recorded separately and are not reflected here.0%
over PEL
36
samples
Most-sampled occupations
- LABORER17
- HOIST ENGINEER/OPERATOR10
- HAND LOADERS9
Source: MSHA respirable dust, quartz, and noise sampling records, updated weekly.
Top causes
- FALL OF ROOF OR BACK 2 non-fatal
- FIRE 1 non-fatal
Incident timeline
2008
2
1990
1
Operators under this controller
Mines on record
For insurers, brokers, and safety consultants
Where Darryl Koperna 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.
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