Frank Sam Mine (U S Pumice Mine) has $1K 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
3
Years on record
1996–2021
Latest incident
Jun 2021
Compliance record
MSHA citations since 2000
19
citations
2
significant & substantial
$1,434
proposed penalties
$1,434
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: 489 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
Frank Sam Mine (U S Pumice Mine) has $1K 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.
$1K
proposed penalties
$1K
current assessed
$1K
paid to date
$0
outstanding
19 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2018-08-29.
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: 2017-07-12, 9 years ago
0%
of limit-tested samples over the exposure limit
7
samples
1
limit-tested
Most sampled contaminants
Respirable dust, <.1mg4
Unlisted Particulate, respirable, <1% Qtz2
Quartz, respirable, >1% Qtz1
Show the individual readings (7)
Date
Contaminant
Concentration
Limit
Conc / limit
Occupation
2017-07-12
Respirable dust, <.1mg
0
Bulldozer Operator
2017-07-12
Unlisted Particulate, respirable, <1% Qtz
0.58
Front-end Loader Operator
2007-05-09
Respirable dust, <.1mg
0
Front-end Loader Operator
2007-05-09
Unlisted Particulate, respirable, <1% Qtz
0.26
Bulldozer Operator
2007-05-09
Quartz, respirable, >1% Qtz
0.13
1.49
0.09
Front-end Loader Operator
2005-10-27
Respirable dust, <.1mg
0
Front-end Loader Operator
2005-10-27
Respirable dust, <.1mg
0
Bulldozer 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.
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year
Employees
2021
2
2020
1
2019
2
2018
2
2017
2
2016
2
2015
2
2014
3
2013
2
2012
3
2011
2
2010
2
2009
0
2008
3
2007
3
2006
3
2005
3
2004
5
2003
4
2002
6
2001
8
2000
9
Source: MSHA quarterly employment and production, updated weekly.
Frank Sam Mine (U S Pumice Mine) 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
While changing the bars on a static rock screen, the employee set the top of a bar, then came down to the front of the bar to assist with placing the end of the bar into the correct position. Before EE had a good hold, the bar slipped, lacerating EE's pinky (5th finger) on the right hand. The injury resulted in two fractures and seven sutures.
May 27, 2021CA · Metal/Non-Metalbulldozer operator, universal operator, heavy equipment operator, operating engineerMACHINERY
Employee sent email to owner on Friday 06/04/21 @ 11:am "On 5/27 after working up at the mine (I was moving some rock using the Dozer) I started feeling some soreness in my lower back. The soreness is lingering, so I've scheduled an appointment to have it looked at".