North Grindstone Mine Coal
Black Nugget LLC
· Surface
Controlled by
Gregory K Arnett
Industry,
Mcdonough County,
IL
·
Abandoned
MSHA Mine ID: 1103209
North Grindstone Mine has $8K in proposed MSHA penalties and $0 outstanding across 0 contested dockets, plus health sampling and the full incident record.
Watch this mine
Email me when a new MSHA incident is filed at North Grindstone Mine.
- Fatalities
- 0
- Total incidents
- 0
- Years on record
- —
- Latest incident
- —
Compliance record
MSHA citations since 2009
22
citations
7
significant & substantial
$8,241
proposed penalties
$8,241
paid to date
100% of proposed penalties paid to date, a $0 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2009
11
inspections on record
377
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: 377 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
North Grindstone Mine has $8K in proposed MSHA penalties and $0 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.$8K
proposed penalties
$8K
current assessed
$8K
paid to date
$0
outstanding
22 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2012-09-18.
Source: MSHA assessed-violations and conference/litigation data, updated weekly.
See also
the operator's enforcement record
MSHA sampling at North Grindstone Mine shows respirable coal dust averaging 0.23 mg/m3 (100% compliant) across 25 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.0.23
dust avg (mg/m3)
1.25
dust max (mg/m3)
100%
within 1.5 mg/m3
25
samples
Most recent sample: 2012-09-18.
Noise
7%
over PEL
14
samples
Most recent sample: 2012-01-05.
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 |
|---|---|---|---|---|
| 2012 Q4 | 11,327 | 0 | 0 | 0.0 |
| 2012 Q3 | 13,084 | 1 | 1 | 76.4 |
| 2012 Q2 | 13,218 | 0 | 0 | 0.0 |
| 2012 Q1 | 15,602 | 0 | 0 | 0.0 |
| 2011 Q4 | 13,861 | 0 | 0 | 0.0 |
| 2011 Q3 | 14,765 | 4 | 1 | 270.9 |
| 2011 Q2 | 14,800 | 0 | 0 | 0.0 |
| 2011 Q1 | 14,402 | 2 | 1 | 138.9 |
Show 7 earlier quarters Hide earlier quarters
| Quarter | Hours worked | Citations | S&S | Per 1M hrs |
|---|---|---|---|---|
| 2010 Q4 | 14,533 | 0 | 0 | 0.0 |
| 2010 Q3 | 15,028 | 0 | 0 | 0.0 |
| 2010 Q2 | 15,124 | 2 | 0 | 132.2 |
| 2010 Q1 | 16,784 | 0 | 0 | 0.0 |
| 2009 Q4 | 16,377 | 9 | 3 | 549.6 |
| 2009 Q3 | 15,065 | 4 | 1 | 265.5 |
| 2009 Q2 | 14,702 | 0 | 0 | 0.0 |
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 North Grindstone Mine
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.