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: 909 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
Lucerne Valley has $43K in proposed MSHA penalties and $0 outstanding across 2 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.
$43K
proposed penalties
$41K
current assessed
$41K
paid to date
$0
outstanding
102 assessments are final orders; 2 contested dockets.
Of $7K in penalties contested before the Commission, $5K was upheld in final decisions.
As of the most recent assessment on 2025-06-18.
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.
When citations were contested
ⓘContesting a citation before the Federal Mine Safety and Health Review Commission is a lawful right. These figures state the public outcomes of that process, from MSHA's Contested Violations file.
4citations taken to the federal commission · 4% of citations on record
Settled
4 · 100%
67%
S&S designation survived the contest
ⓘCounts a Significant & Substantial citation as surviving when a settlement or judge's decision kept the designation, or the contest was dismissed or defaulted so the citation stands as issued. Vacated and withdrawn citations, and settlements that removed the designation, count against.
of 3 decided S&S contests · industry: 79%
35%
Penalty reduction in decided contests
$7K proposed, $5K after decisions · industry: 39%
Source: MSHA Contested Violations file (public record), updated weekly. A dismissed or defaulted contest leaves the citation standing as issued; a vacated or withdrawn citation is removed from the violation record. Latest contest filed 2009-12-22.
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 mine contested before the Federal Mine Safety and Health Review Commission, with the outcome on record.
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: 2025-06-18
0%
of limit-tested samples over the exposure limit
14
samples
8
limit-tested
Most sampled contaminants
Quartz, respirable, >1% Qtz10
Respirable dust, <.1mg4
Show the individual readings (14)
Date
Contaminant
Concentration
Limit
Conc / limit
Occupation
2025-06-18
Quartz, respirable, >1% Qtz
0.15
Cleanup Man
2022-10-26
Respirable dust, <.1mg
0
Laborer, Bullgang
2022-10-26
Quartz, respirable, >1% Qtz
0.15
Laborer, Bullgang
2019-01-31
Respirable dust, <.1mg
0
Laborer, Bullgang
2019-01-31
Respirable dust, <.1mg
0
Laborer, Bullgang
2014-04-02
Respirable dust, <.1mg
0
Laborer, Bullgang
2014-04-02
Quartz, respirable, >1% Qtz
0.27
2.13
0.13
Utility Man
2009-04-21
Quartz, respirable, >1% Qtz
0.39
1.09
0.36
Front-end Loader Operator
2009-04-21
Quartz, respirable, >1% Qtz
0.13
0.97
0.13
Front-end Loader Operator
2009-04-21
Quartz, respirable, >1% Qtz
0.27
0.76
0.36
Belt Crew
2009-04-21
Quartz, respirable, >1% Qtz
0.36
1.18
0.31
Supervisor, Co. Official
2007-06-13
Quartz, respirable, >1% Qtz
0.51
1.34
0.38
Dry Screen Plant Operator
2007-06-13
Quartz, respirable, >1% Qtz
0.46
1.2
0.38
Belt Crew
2007-06-13
Quartz, respirable, >1% Qtz
0.51
1.79
0.28
Belt Crew
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.
Lucerne Valley recorded 0.00 reportable injury cases per 100 full-time workers in 2025.
Injury rate, 2025
ⓘ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 1.65 and the all-US-mining average was 1.97 cases per 100 workers.
In California, metal and nonmetal mining averaged 1.42 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
2025 *
0.00
0.00
0.000
2023 *
8.06
0.00
0.000
2022 *
0.00
0.00
0.000
2021 *
0.00
0.00
0.000
2020 *
7.82
7.82
0.000
2008 *
0.00
0.00
0.000
2007 *
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
2026
11
2025
9
2024
7
2023
11
2022
12
2021
12
2020
12
2019
8
2018
9
2017
9
2016
7
2015
7
2014
7
2013
8
2012
8
2011
6
2010
5
2009
8
2008
19
2007
21
2006
25
Source: MSHA quarterly employment and production, updated weekly.
Lucerne Valley sits in San Bernardino 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.
San Bernardino County, California · Population 2,187,816
0.1%
Mining share of county employment
$82,184
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
Miner has had an audiometric standard threshold shift in R-ear, pending retest, which results won't be available within the 10-day reporting criteria. Miner stated hobbies as music and guns, and worked with hearing protection directly before the initial test was performed.
2020 · 1 incident
March 4, 2020CA · Metal/Non-Metalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techHANDLING OF MATERIALS
Robertson's · Fall to the walkway or working surface
miner tripped and fell injuring EE's right shoulder, right shoulder contusion injury
2013 · 1 incident
April 17, 2013CA · Metal/Non-Metalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techHANDLING OF MATERIALS
Robertson's · Caught in, under or between a moving and a stationary object
The primary jaw had bridged over causing rocks to overflow the jaw. The injured miner was cleaning rocks off the deck and misjudged the distance between the rock in his hand and another rock. The result was a broken left index finger.
2006 · 2 incidents
November 7, 2006CA · Metal/Non-Metalassistant mine foreman, assistant mine managerSLIP OR FALL OF PERSON
EE was inside the cone crusher inspecting the crusher for a problem and opened the hatch door to let some fresh air into the inspection area, after several minutes he forgot the hatch was open and leaned back and fell through the door and fell approximately 10 feet.
August 19, 2006CA · Metal/Non-Metalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techHANDLING OF MATERIALS
Employee fabricated a lifting device out of steel to lift a sheave for a v-belt drive assembly, upon lifting the sheave one of his weld broke and the sheave dropped a couple feet hitting the ground and rolling over his right foot, thus he incurred a bruised right foot needing a few days to recover.