Mining Incidents

Herbert D Roberts: 13 MSHA citations controller

MSHA controller ID: C00746

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Fatalities
0
Total incidents
1
Mines on record
1
Years on record
1983
Compliance record
MSHA citations since 2001
13
citations
3
significant & substantial
$647
proposed penalties
$0
paid to date
0% of proposed penalties paid to date, a $647 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2000
15
inspections on record
327
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: 327 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
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.
$647
proposed penalties
$647
current assessed
$0
paid to date
$647
outstanding
11 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2001-07-19.
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.
27.3%
significant & substantial
0.0%
high negligence or reckless
27.3%
reasonably likely or greater
0.0%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 9.1% low, 90.9% moderate, 0.0% high, 0.0% 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: 2001-08-06, 25 years ago
91%
within 1.5 mg/m3
23
samples
3.25
dust max (mg/m3)
15 samples taken by MSHA inspectors, 8 by the operator.
Most-sampled occupations
  • TRACTOR OPERATOR/MOTORMAN6
  • CONTINUOUS MINER OPERATOR3
  • ELECTRICIAN2

Silica (quartz)

Last sampled: 2001-08-10, 25 years ago
6.6
silica avg (%)
3
samples
11.0
silica max (%)
Most-sampled occupations
  • CONTINUOUS MINER OPERATOR2
Source: MSHA respirable dust, quartz, and noise sampling records, updated weekly.

Top causes

Incident timeline

1983
1

Operators under this controller

Mines on record

For insurers, brokers, and safety consultants

Where Herbert D Roberts 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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