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: 828 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
Hallwood Plant has $4K in proposed MSHA penalties and $151 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.
$4K
proposed penalties
$4K
current assessed
$4K
paid to date
$151
outstanding
33 assessments are final orders; 2 contested dockets.
Of $300 in penalties contested before the Commission, $200 was upheld in final decisions.
As of the most recent assessment on 2026-05-06.
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.
3citations taken to the federal commission · 9% of citations on record
Settled
2 · 67%
Stood as issued
1 · 33%
33%
Penalty reduction in decided contests
$300 proposed, $200 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 A dismissed or defaulted contest leaves the citation standing as issued; a vacated or withdrawn citation is removed from the violation record.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 2010-03-01.
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: 2026-05-07
0%
of limit-tested samples over the exposure limit
18
samples
6
limit-tested
Most sampled contaminants
Quartz, respirable, >1% Qtz9
Respirable dust, <.1mg8
Unlisted Particulate, respirable, <1% Qtz1
Show the individual readings (18)
Date
Contaminant
Concentration
Limit
Conc / limit
Occupation
2026-05-07
Quartz, respirable, >1% Qtz
0.13
Laborer, Bullgang
2024-11-05
Respirable dust, <.1mg
0
Dragline Operator
2024-11-05
Respirable dust, <.1mg
0
Laborer, Bullgang
2024-04-22
Quartz, respirable, >1% Qtz
0.24
1.08
0.22
Laborer, Bullgang
2023-04-20
Quartz, respirable, >1% Qtz
0.16
0.68
0.24
Laborer, Bullgang
2019-11-05
Quartz, respirable, >1% Qtz
0.29
Crusher Oper/Worker
2019-11-05
Quartz, respirable, >1% Qtz
0.25
Laborer, Bullgang
2017-08-15
Quartz, respirable, >1% Qtz
0.25
1.82
0.14
Cleanup Man
2017-08-15
Quartz, respirable, >1% Qtz
0.24
0.84
0.29
Laborer, Bullgang
2017-08-15
Respirable dust, <.1mg
0
Front-end Loader Operator
2013-05-30
Respirable dust, <.1mg
0
Front-end Loader Operator
2013-05-30
Respirable dust, <.1mg
0
Truck Driver
2013-05-30
Respirable dust, <.1mg
0
Laborer, Bullgang
2009-05-20
Respirable dust, <.1mg
0
Crusher Oper/Worker
2009-05-20
Quartz, respirable, >1% Qtz
0.49
0.87
0.56
Utility Man
2009-05-20
Unlisted Particulate, respirable, <1% Qtz
0.12
Front-end Loader Operator
2009-05-20
Respirable dust, <.1mg
0
Front-end Loader Operator
2003-04-09
Quartz, respirable, >1% Qtz
0.17
0.91
0.19
Laborer, Bullgang
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.
Hallwood Plant 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
2024 *
0.00
0.00
0.000
2023 *
0.00
0.00
0.000
2022 *
0.00
0.00
0.000
2021 *
0.00
0.00
0.000
2020 *
0.00
0.00
0.000
2019 *
0.00
0.00
0.000
2017 *
4.87
4.87
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
19
2025
17
2024
16
2023
21
2022
22
2021
25
2020
23
2019
14
2018
14
2017
21
2016
15
2015
15
2014
15
2013
16
2012
19
2011
20
2010
17
2009
20
2008
22
2007
29
2006
30
2005
19
2004
3
2003
5
2002
8
2001
2
2000
4
Source: MSHA quarterly employment and production, updated weekly.
Hallwood Plant sits in Yuba 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.
Yuba County, California · Population 83,079
0.0%
Mining share of county employment
$73,313
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 operating the Portable Powerscreen Jaw crusher, the employee had a rock fall from above that struck the operators control panel. The control panel door stuck the employee in the back. The extent of the injury to the employee was unknown so the emergency response team called an ambulance immediately. Employee was taken to the emergency room.
While taking conveyor measurements employee was struck by a rock on the left side of his head.
2002 · 3 incidents
October 26, 2002CA · Metal/Non-Metalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techHANDLING OF MATERIALS
EMPLOYEE WAS REMOVING AND REPLACING SCREENS ON THE WET DECK, WHILE LIFTING THE SCREEN UP THE STAIRWAY, EE SUFFERED A HERNIATED INTESTINE.
October 15, 2002CA · Metal/Non-Metalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techHANDLING OF MATERIALS
Teichert Aggregates · Caught in, under or between (Not Elsewhere Classified)
EE WAS ATTEMPTING TO PLACE A JACK UNDER A SERVICE TRUCK. OTHER EE HAD ALREADY PLACED A JACK UNDER THE LEFT SIDE AND WAS ALREADY TAKING OFF LEFT REAR TIRES. THE JACK SLIPPED AND THE TRUCK CAME DOWN THE EE LEFT ARM WAS UP AGAINST THE FUEL TANK WHEN THE TRUCK CAME DOWN AND IT BROKE HIS ARM
September 10, 2002CA · Metal/Non-Metalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techPOWERED HAULAGE