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: 238 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
Austin Quarry 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
8 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2026-05-27.
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: 2026-03-18
6
samples
0
limit-tested
Most sampled contaminants
Respirable dust, <.1mg6
Show the individual readings (6)
Date
Contaminant
Concentration
Limit
Conc / limit
Occupation
2026-03-18
Respirable dust, <.1mg
0
Truck Driver
2026-03-18
Respirable dust, <.1mg
0
Front-end Loader Operator
2026-03-18
Respirable dust, <.1mg
0
Truck Driver
2025-04-03
Respirable dust, <.1mg
0
Laborer, Bullgang
2025-04-03
Respirable dust, <.1mg
0
Laborer, Bullgang
2023-05-24
Respirable dust, <.1mg
0
Front-end Loader 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.
Austin Quarry 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 *
3.64
0.00
0.000
2022 *
7.15
3.58
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
29
2025
27
2024
28
2023
25
2022
24
2021
14
Source: MSHA quarterly employment and production, updated weekly.
Austin Quarry sits in Madera 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.
Madera County, California · Population 158,790
0.0%
Mining share of county employment
$75,496
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
Employee reports while operating a CAT992 EE struck a toe in the wall causing EE's neck to move in a sudden backwards motion. Employee began to experience headaches and pain in EE's neck, after medical evaluation employee was released to full duty with no job restrictions. Employee was prescribed physical therapy.
Employee was working on the jaw crusher. When EE cut the bolt, it ricocheted hitting the employee's face. Employee was treated at the emergency room and diagnosed with a fractured nose and fractured eye socket.
2021 · 2 incidents
December 20, 2021CA · Metal/Non-Metaldrill operatorMACHINERY
CalMat Co. · Caught in, under or between a moving and a stationary object
While training another person, employee looked back at the drill rig, the operator motioned the drill pipe. Employee noticed the drill pipe fell out of gripper arm. When employee touched the pipe to assist it back into the gripper arm. The pipe dropped and pinched the tips of fingers 3 & 4 on right hand
August 5, 2021CA · Metal/Non-Metallaborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitmanMACHINERY
CalMat Co. · Caught in, under or between running or meshing objects
An employee was helping another mag drill holes. The plate was cleaned and drill clear, another employee turned it on at the same time IE reached back in to move a rag. It became entangled in the bit and around IE's glove. This caused lacerations to ring finger and lacerations/fractures to the tip of middle finger, resulting in the loss of 1/2 inch of the tip of middle finger.