Mariposa Aggregates: 25 MSHA citations operator
Controlled by
Wayne R Bevan
MSHA operator ID: L35959
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- Fatalities
- 0
- Total incidents
- 20
- Mines on record
- 1
- Years on record
- 1989–1994
Compliance record
MSHA citations since 2000
25
citations
12
significant & substantial
$14,497
proposed penalties
$0
paid to date
0% of proposed penalties paid to date, a $14,497 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2000
3
inspections on record
97
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: 97 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.$14K
proposed penalties
$14K
current assessed
$0
paid to date
$14K
outstanding
24 assessments are final orders; 7 contested dockets.
Of $108K in penalties contested before the Commission, $108K was upheld in final decisions.
As of the most recent assessment on 2000-03-22.
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.50.0%
significant & substantial
66.7%
high negligence or reckless
50.0%
reasonably likely or greater
70.8%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 0.0% low, 33.3% moderate, 66.7% high, 0.0% reckless.
Source: MSHA violations gravity and negligence coding, updated weekly.
Contested penalties
ⓘ
A reduction or dismissal at the Commission is a lawful outcome of contesting a proposed penalty. Figures are the proposed amount and the amount upheld in the docket's decision.Largest penalties this operator contested before the Federal Mine Safety and Health Review Commission, with the outcome on record.
| Docket | Decision | Judge | Year | Proposed / upheld |
|---|---|---|---|---|
| WEST20000239M | Default | Manning | 2001 | $29K → $29K |
| WEST20000231M | Default | Manning | 2001 | $29K → $29K |
| WEST20000232M | Default | Manning | 2001 | $25K → $25K |
| WEST20000520M | Default | Manning | 2001 | $10K → $10K |
| WEST20000240M | Default | Manning | 2001 | $8K → $8K |
| WEST20000521M | Default | Manning | 2001 | $6K → $6K |
Source: FMSHRC civil penalty dockets and decisions (public record), updated weekly.
Top causes
- HANDLING OF MATERIALS 7 non-fatal
- SLIP OR FALL OF PERSON 4 non-fatal
- MACHINERY 3 non-fatal
- HANDTOOLS (NONPOWERED) 2 non-fatal
- POWERED HAULAGE 2 non-fatal
- EXPLODING VESSELS UNDER PRESSURE 1 non-fatal
Incident timeline
1994
1
1993
4
1992
4
1991
2
1990
4
1989
5
Mines on record
For insurers, brokers, and safety consultants
Where Mariposa Aggregates 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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