O'Sullivan Ranch Pit has $3K 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
5
Years on record
1996–2006
Latest incident
Nov 2006
Compliance record
MSHA citations since 2000
36
citations
6
significant & substantial
$3,280
proposed penalties
$3,280
paid to date
100% of proposed penalties paid to date, a $0 gap.
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: 323 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
O'Sullivan Ranch Pit has $3K 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.
$3K
proposed penalties
$3K
current assessed
$3K
paid to date
$0
outstanding
36 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2016-06-22.
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.
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.
Metal and nonmetal contaminants (personal samples)
ⓘMany samples are screening measurements of substances with no applicable exposure limit; they are counted as samples but excluded from every over-limit figure. Over-limit shares use only limit-tested samples.
Last sampled: 2009-05-13, 17 years ago
0%
of limit-tested samples over the exposure limit
5
samples
4
limit-tested
Most sampled contaminants
Quartz, respirable, >1% Qtz4
Respirable dust, <.1mg1
Show the individual readings (5)
Date
Contaminant
Concentration
Limit
Conc / limit
Occupation
2009-05-13
Quartz, respirable, >1% Qtz
0.15
0.89
0.17
Front-end Loader Operator
2009-05-13
Respirable dust, <.1mg
0
Crusher Oper/Worker
2006-07-11
Quartz, respirable, >1% Qtz
0.93
2.04
0.46
Front-end Loader Operator
2006-07-11
Quartz, respirable, >1% Qtz
0.21
1.06
0.20
Supervisor, Co. Official
2001-05-08
Quartz, respirable, >1% Qtz
0.19
0.91
0.21
Supervisor, Co. Official
Source: MSHA respirable dust, quartz, and noise sampling records, updated weekly. Metal/nonmetal contaminant figures come from MSHA's Personal Health Samples and Area Samples files (public record), updated weekly.
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year
Employees
2016
1
2015
1
2014
2
2013
2
2012
2
2011
2
2010
2
2009
2
2008
3
2007
4
2006
3
2005
3
2004
3
2003
3
2002
3
2001
3
2000
4
Source: MSHA quarterly employment and production, updated weekly.
O'Sullivan Ranch Pit sits in Colusa County, California, where the Census mining category is 0.0% 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.
Colusa County, California · Population 21,895
0.0%
Mining share of county employment
$75,149
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
2016 Q2
23
1
0
43478.3
2016 Q1
4
0
0
0.0
2015 Q4
14
0
0
0.0
2015 Q3
0
0
0
2015 Q2
32
0
0
0.0
2015 Q1
83
0
0
0.0
2014 Q4
199
0
0
0.0
2014 Q3
845
0
0
0.0
Show 58 earlier quartersHide earlier quarters
Quarter
Hours worked
Citations
S&S
Per 1M hrs
2014 Q2
653
0
0
0.0
2014 Q1
312
0
0
0.0
2013 Q4
713
0
0
0.0
2013 Q3
849
0
0
0.0
2013 Q2
884
0
0
0.0
2013 Q1
431
0
0
0.0
2012 Q4
586
0
0
0.0
2012 Q3
793
0
0
0.0
2012 Q2
667
0
0
0.0
2012 Q1
392
0
0
0.0
2011 Q4
527
1
0
1897.5
2011 Q3
735
3
0
4081.6
2011 Q2
950
0
0
0.0
2011 Q1
408
1
0
2451.0
2010 Q4
630
0
0
0.0
2010 Q3
842
1
0
1187.6
2010 Q2
845
0
0
0.0
2010 Q1
511
1
0
1956.9
2009 Q4
799
0
0
0.0
2009 Q3
876
0
0
0.0
2009 Q2
918
0
0
0.0
2009 Q1
769
0
0
0.0
2008 Q4
926
2
2
2159.8
2008 Q3
1,105
0
0
0.0
2008 Q2
1,352
0
0
0.0
2008 Q1
1,172
2
1
1706.5
2007 Q4
1,584
3
1
1893.9
2007 Q3
1,801
0
0
0.0
2007 Q2
1,949
3
0
1539.3
2007 Q1
1,310
0
0
0.0
2006 Q4
1,510
1
0
662.3
2006 Q3
1,582
5
0
3160.6
2006 Q2
1,347
0
0
0.0
2006 Q1
1,502
0
0
0.0
2005 Q4
1,526
1
0
655.3
2005 Q3
1,589
2
0
1258.7
2005 Q2
1,655
0
0
0.0
2005 Q1
1,400
2
0
1428.6
2004 Q4
1,528
0
0
0.0
2004 Q3
1,417
0
0
0.0
2004 Q2
1,574
0
0
0.0
2004 Q1
1,563
1
0
639.8
2003 Q4
1,591
0
0
0.0
2003 Q3
1,761
3
2
1703.6
2003 Q2
1,583
0
0
0.0
2003 Q1
1,409
0
0
0.0
2002 Q4
1,665
0
0
0.0
2002 Q3
1,627
0
0
0.0
2002 Q2
1,525
1
0
655.7
2002 Q1
1,403
0
0
0.0
2001 Q4
1,463
0
0
0.0
2001 Q3
1,080
0
0
0.0
2001 Q2
1,515
1
0
660.1
2001 Q1
1,492
0
0
0.0
2000 Q4
1,380
0
0
0.0
2000 Q3
1,431
1
0
698.8
2000 Q2
1,369
0
0
0.0
2000 Q1
1,591
0
0
0.0
No fatalities recorded at this mine.
Reportable incidents
5 on file
2006 · 2 incidents
November 18, 2006CA · Metal/Non-Metallaborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitmanHANDLING OF MATERIALS
When employee was grinding on pulley shaft, he rubbed his eye with his shirt sleeve causing a metal splinter to go into his eye.
March 20, 2006CA · Metal/Non-Metalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techHANDLING OF MATERIALS
Employee was drawing knife towards himself while cutting nubber, his hand slipped and he cut himself on his right thigh requiring a couple of stitches.
2003 · 1 incident
June 23, 2003CA · Metal/Non-Metallaborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitmanHANDLING OF MATERIALS
EMPLOYEE WAS TIGHTENING THE SET SCREWS BEHIND THE FEED HOPPER TAIL PULLEY GUARD AND HIS RIGHT ARM SLIPPED AND HIT THE GUARD ON THE TAIL PULLEY CAUSING A PUNCTURE WOUND.
1996 · 1 incident
March 11, 1996CA · Metal/Non-Metallaborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitmanHANDLING OF MATERIALS