Derby Strip #9 Coal
J.W. Construction Company Inc.
· Surface
Controlled by
Jerry W Wharton
APPALACHIA,
Wise County,
VA
·
Active
MSHA Mine ID: 4407422
Derby Strip #9 has $3K in proposed MSHA penalties and $2K outstanding across 0 contested dockets, plus health sampling and the full incident record.
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- Fatalities
- 0
- Total incidents
- 0
- Years on record
- —
- Latest incident
- —
Compliance record
MSHA citations since 2023
17
citations
6
significant & substantial
$3,374
proposed penalties
$1,594
paid to date
47% of proposed penalties paid to date, a $1,780 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2023
11
inspections on record
342
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: 342 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
Derby Strip #9 has $3K in proposed MSHA penalties and $2K outstanding across 0 contested dockets.
Penalty disposition
ⓘ
Differences between proposed and paid penalties reflect both settlements and conference reductions and amounts still owed. Outstanding is the balance currently owed.$3K
proposed penalties
$3K
current assessed
$2K
paid to date
$2K
outstanding
15 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2026-01-05.
Source: MSHA assessed-violations and conference/litigation data, updated weekly.
See also
the operator's enforcement record
MSHA sampling at Derby Strip #9 shows respirable coal dust averaging 0.10 mg/m3 (100% compliant) across 50 samples.
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.0.10
dust avg (mg/m3)
0.70
dust max (mg/m3)
100%
within 1.5 mg/m3
50
samples
Most recent sample: 2026-06-19.
Silica (quartz)
5.2
silica avg (%)
7.8
silica max (%)
4
samples
Most recent sample: 2025-12-19.
Noise
0%
over PEL
21
samples
Most recent sample: 2025-12-11.
Source: MSHA respirable dust, quartz, and noise sampling records, updated weekly.
Quarterly safety rates
ⓘ
Citations per million reported employee-hours. Rates begin in 2000, when MSHA's quarterly employment data starts; earlier incidents are counted but cannot be rate-adjusted. Quarters under 100,000 reported hours are greyed: too few hours for a stable rate.Citations per million employee-hours, as reported to MSHA
| Quarter | Hours worked | Citations | S&S | Per 1M hrs |
|---|---|---|---|---|
| 2025 Q4 | 13,255 | 4 | 2 | 301.8 |
| 2025 Q3 | 7,836 | 2 | 1 | 255.2 |
| 2025 Q2 | 16,053 | 1 | 0 | 62.3 |
| 2025 Q1 | 17,551 | 0 | 0 | 0.0 |
| 2024 Q4 | 12,111 | 2 | 2 | 165.1 |
| 2024 Q3 | 2,383 | 0 | 0 | 0.0 |
| 2024 Q2 | 9,947 | 0 | 0 | 0.0 |
| 2024 Q1 | 12,832 | 2 | 0 | 155.9 |
Show 2 earlier quarters Hide earlier quarters
| Quarter | Hours worked | Citations | S&S | Per 1M hrs |
|---|---|---|---|---|
| 2023 Q4 | 14,480 | 0 | 0 | 0.0 |
| 2023 Q3 | 901 | 2 | 1 | 2219.8 |
No reportable incidents on file.
MSHA has no recorded reportable accidents for this mine in the current dataset. New reports appear here within a week of being filed.
For insurers, brokers, and safety consultants
The full compliance file on Derby Strip #9
A dated report covering the 26-year penalty trail, line-item violation pattern, contest and docket posture, rate-normalized peer benchmark, and full fatality history. Delivered as a PDF with the underlying data as CSV.