Mining Incidents

Pentz Pit: 2 MSHA citations Metal/Non-Metal

Controlled by Knife River Corporation
butte, Butte County, CA  ·  Abandoned
MSHA Mine ID: 0401699

Pentz Pit has $110 in proposed MSHA penalties and $0 outstanding across 0 contested dockets, plus health sampling and the full incident record.

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Fatalities
0
Total incidents
4
Years on record
1990–1992
Latest incident
May 1992
Compliance record
MSHA citations since 2000
2
citations
0
significant & substantial
$110
proposed penalties
$110
paid to date
100% of proposed penalties paid to date, a $0 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2000
3
inspections on record
11
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: 11 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.

Pentz Pit has $110 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.
$110
proposed penalties
$110
current assessed
$110
paid to date
$0
outstanding
2 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2000-08-16.
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.
0.0%
significant & substantial
0.0%
high negligence or reckless
0.0%
reasonably likely or greater
50.0%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 0.0% low, 100.0% moderate, 0.0% high, 0.0% reckless.
Source: MSHA violations gravity and negligence coding, updated weekly.
Ownership history
  1. Baldwin Contracting Company Inc 1950 to 1996
  2. Baldwin Contracting Company Inc 1996 to present
  3. Aggregate Material Processing Inc 1997 to 1999
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2003 0
2002 1
2001 0
2000 4
Source: MSHA quarterly employment and production, updated weekly.

Pentz Pit sits in Butte County, California, where the Census mining category is 0.1% of county employment.

Local economic context
County figures come from the US Census Bureau's American Community Survey, 5-year pooled estimates, so the 2023 vintage covers 2019 through 2023. The Census category is 'mining, quarrying, and oil and gas extraction', which is broader than MSHA jurisdiction and includes oil and gas workers no mine employs. These figures describe the surrounding county, not this mine, and are not a factor in any specific incident.
Butte County, California · Population 209,470
0.1%
Mining share of county employment
$68,574
Median household income
Source: US Census Bureau, American Community Survey 2023 5-year estimates.
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
2003 Q1 0 0 0
2002 Q4 0 0 0
2002 Q3 438 0 0 0.0
2002 Q1 43 0 0 0.0
2001 Q4 845 0 0 0.0
2001 Q3 0 0 0
2001 Q2 0 0 0
2001 Q1 0 0 0
Show 4 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2000 Q4 753 0 0 0.0
2000 Q3 1,308 2 0 1529.1
2000 Q2 991 0 0 0.0
2000 Q1 34 0 0 0.0
No fatalities recorded at this mine.

Reportable incidents

4 on file

1992 · 2 incidents

May 21, 1992 CA · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator SLIP OR FALL OF PERSON
Baldwin Contracting Company Inc · Fall from ladders

INJURED MAN FELL OFF LADDER WHEN SUPPORT STRUCTURE HE WAS HOLDING BROKE LOOSE HE FELL TO GROUND FROM LADDER AND LANDED ON SHOULDER AND BACK.

February 18, 1992 CA · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver HANDTOOLS (NONPOWERED)
Baldwin Contracting Company Inc · Struck by... (Not Elsewhere Classified)

SECURING LOAD ON TRUCK WITH CHAIN BINDER CHAIN TOO TIGHT IT SLIPPED HIT IN L RIB CAGE

1991 · 1 incident

August 9, 1991 CA · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver SLIP OR FALL OF PERSON
Baldwin Contracting Company Inc · Fall onto or against objects

INJURY OCCURRED 8-9-91. COMPANY CONTRACTING INF-ORMED OF INJURY 4-4-92. INVESTIGATION UNTIL 4-22-92.INJ NOT AN EMPL OF COMPANY. (TRIPPED ON PLATFORM SCALE)

1990 · 1 incident

May 2, 1990 CA · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDLING OF MATERIALS
Baldwin Contracting Company Inc · Caught in, under or between (Not Elsewhere Classified)

MAN WAS SETTING REBAR FOR CONCRETE FORMS HAND SLIPPED AND REBAR CAUGHT LEFT ARM AND CUT IT. WAS SENT TO IMMEDIATE CARE WHERE STITCHES WERE USED IN TREATMENT. WAS ABLE TO RETURN TO WORK THE SAM E DAY.