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: 430 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
U S Pumice Mill has $2K 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.
$2K
proposed penalties
$2K
current assessed
$2K
paid to date
$0
outstanding
23 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2009-10-20.
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: 2009-10-20, 16 years ago
2
samples
0
limit-tested
Most sampled contaminants
Respirable dust, <.1mg1
Unlisted Particulate, respirable, <1% Qtz1
Show the individual readings (2)
Date
Contaminant
Concentration
Limit
Conc / limit
Occupation
2009-10-20
Respirable dust, <.1mg
0
Front-end Loader Operator
2009-10-20
Unlisted Particulate, respirable, <1% Qtz
0.13
Bagging Operator
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.
U S Pumice Mill recorded 0.00 reportable injury cases per 100 full-time workers in 2008.
Injury rate, 2008
ⓘThis rate is reportable injury cases per 100 full-time-equivalent workers per year, computed as 200,000 times cases divided by MSHA operator-reported employee-hours. Cases are injuries MSHA graded degree 01 through 07; accident-only events that hurt no one are excluded, and so are contractor injuries, whose hours do not attach to a single mine. Rates begin in 2000, when quarterly employment reporting starts, and are withheld below 20,000 hours in a year.
0.00
total case rate
0.00
days-away rate
0.000
fatality rate
Below average. The US metal and nonmetal mining average was 3.15 and the all-US-mining average was 3.61 cases per 100 workers.
In California, metal and nonmetal mining averaged 3.34 cases per 100 workers that year.
Under 100,000 employee-hours were reported that year, so a single case moves the rate by two or more. Read the figure as approximate.
Year
total case rate
days-away
fatal
2008 *
0.00
0.00
0.000
2007 *
13.67
6.84
0.000
2006 *
5.30
5.30
0.000
2005 *
0.00
0.00
0.000
2004 *
4.16
4.16
0.000
2003 *
9.19
0.00
0.000
2002 *
12.36
0.00
0.000
2001 *
0.00
0.00
0.000
* Fewer than 100,000 employee-hours that year; the rate is less stable.
Source: injury cases from MSHA accident and injury records; employee-hours from MSHA quarterly employment reports. Rate is cases per 100 full-time-equivalent workers, operator employees only.
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year
Employees
2010
4
2009
5
2008
12
2007
14
2006
17
2005
20
2004
21
2003
19
2002
20
2001
21
2000
24
Source: MSHA quarterly employment and production, updated weekly.
U S Pumice Mill sits in Mono 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.
Mono County, California · Population 13,169
0.0%
Mining share of county employment
$86,953
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
2010 Q1
2,013
0
0
0.0
2009 Q4
1,879
1
0
532.2
2009 Q3
2,402
0
0
0.0
2009 Q2
2,360
1
0
423.7
2009 Q1
2,477
1
0
403.7
2008 Q4
6,324
0
0
0.0
2008 Q3
6,909
3
0
434.2
2008 Q2
6,153
0
0
0.0
Show 33 earlier quartersHide earlier quarters
Quarter
Hours worked
Citations
S&S
Per 1M hrs
2008 Q1
6,083
2
0
328.8
2007 Q4
5,952
0
0
0.0
2007 Q3
6,840
4
1
584.8
2007 Q2
7,897
0
0
0.0
2007 Q1
8,570
0
0
0.0
2006 Q4
10,022
0
0
0.0
2006 Q3
10,561
0
0
0.0
2006 Q2
8,613
0
0
0.0
2006 Q1
8,535
0
0
0.0
2005 Q4
9,280
2
0
215.5
2005 Q3
9,697
0
0
0.0
2005 Q2
12,038
0
0
0.0
2005 Q1
11,542
0
0
0.0
2004 Q4
10,986
0
0
0.0
2004 Q3
12,560
0
0
0.0
2004 Q2
12,326
0
0
0.0
2004 Q1
12,255
0
0
0.0
2003 Q4
10,710
0
0
0.0
2003 Q3
10,762
0
0
0.0
2003 Q2
11,074
1
1
90.3
2003 Q1
10,976
3
0
273.3
2002 Q4
11,920
0
0
0.0
2002 Q3
12,311
2
0
162.5
2002 Q2
11,868
0
0
0.0
2002 Q1
12,464
2
1
160.5
2001 Q4
13,088
0
0
0.0
2001 Q3
11,169
0
0
0.0
2001 Q2
10,697
0
0
0.0
2001 Q1
11,050
0
0
0.0
2000 Q4
12,129
0
0
0.0
2000 Q3
12,584
2
0
158.9
2000 Q2
14,422
0
0
0.0
2000 Q1
11,895
0
0
0.0
No fatalities recorded at this mine.
Reportable incidents
16 on file
2007 · 2 incidents
August 1, 2007CA · Metal/Non-Metalwarehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operatorPOWERED HAULAGE
The loader operator went to pull out a truck that was stuck. One EE was hocking up the truck, when the loader operator got out to help, the loader rolled into the truck, pinning the two EE's.
August 1, 2007CA · Metal/Non-Metalwarehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operatorPOWERED HAULAGE
The loader operator went to pull out a truck that was stuck. The EE was hocking up the truck when the loader operator got out to help. The loader rolled into the truck, pinning the two EE's.
2006 · 1 incident
October 17, 2006CA · Metal/Non-Metallaborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitmanHANDLING OF MATERIALS
Employee was picking up a rock, he said he hurt his back. He continued to work on 11/27/06 after 5 days off, he reported his back was hurting him but was not sure why. On 12/20/06 we got a letter from his dr. saying it was work related.
2004 · 2 incidents
November 3, 2004CA · Metal/Non-Metalstone finishing and sizing personnel, stone/rock cut/polish/saw operator, splitter, cutter, trimmerHANDLING OF MATERIALS
HE WAS DRILLING A ROCK ON A DRILL PRESS. HE WENT TO REMOVE THE ROCK WITHOUT TURNING OFF THE DRILL. AS HE PICKED UP THE ROCK HE CAUGHT HIS RIGHT INDEX FINGER ON THE DRILL BIT.
2003 · 2 incidents
April 4, 2003CA · Metal/Non-Metalchute blaster, rockman, hang-up man, raise blasterHANDLING OF MATERIALS
EE WAS CUTTING A ROCK WHEN HE PUT HIS HAND ON THE BACK OF THE ROCK PLACING HIS HAND RIGHT IN LINE WITH THE SAW BLADE. HE CUT HIS FINGERS #3 #4 AND HAD TO HAVE STITCHES.
July 3, 2002CA · Metal/Non-Metalstone finishing and sizing personnel, stone/rock cut/polish/saw operator, splitter, cutter, trimmerMACHINERY
EE WAS CUTTING ROCK WITH THE SAW, WHEN A SMALL PIECE OF ROCK WENT INTO HIS RIGHT EYE. WE TOOK HIM TO THE DOCTORS HE HAD A SCRATCH IN HIS EYE. HIS EYE WAS INFECTED. HE WAS GIVEN A PRESCRIPTION MEDICATION AND RETURNED TO WORK.
January 24, 2002CA · Metal/Non-Metalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techHANDLING OF MATERIALS
WAS CHANGING OUT A DRIVE SHAFT ON #3 BAND SAW WHEN THE SHAFT SLIPPED AND PINCHED HIS RT. INDEXFINGER BETWEEN THE SHAFT AND BEARING HOUSING. HEHAD TO GET STITCHES AT THE END OF HIS FINGER.
2000 · 1 incident
May 1, 2000CA · Metal/Non-Metalwarehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operatorMACHINERY
EMPLOYEE WAS WE3GHING AND LABELING SMALL 6 LB BAGS OF PUMICE. WRIST BECAME SORE AND WAS DIAGNOSED AS TENDONITIS OR POSSIBLE CARPAL TUNNEL SYNDROME. CARPAL TUNNEL RELEASE WAS PERFORMED 8-7-87.
Related mines
Other mines operated by United States Pumice Company