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: 285 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
Queen Creek Stone has $3K in proposed MSHA penalties and $0 outstanding across 3 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
15 assessments are final orders; 3 contested dockets.
Of $383 in penalties contested before the Commission, $0 was upheld in final decisions.
As of the most recent assessment on 2024-10-02.
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 · 19% of citations on record
Stood as issued
1 · 33%
Vacated or withdrawn
2 · 67%
100%
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 Vacated and withdrawn citations, and settlements that removed the designation, count against.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 1 decided S&S contests · industry: 79%
100%
Penalty reduction in decided contests
$383 proposed, $0 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 A dismissed or defaulted contest leaves the citation standing as issued; a vacated or withdrawn citation is removed from the violation record.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 2025-03-25.
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: 2024-10-02
0%
of limit-tested samples over the exposure limit
12
samples
3
limit-tested
Most sampled contaminants
Respirable dust, <.1mg5
Quartz, respirable, >1% Qtz4
Unlisted Particulate, respirable, <1% Qtz2
Nuisance dust, respirable, <1% Qtz1
Show the individual readings (12)
Date
Contaminant
Concentration
Limit
Conc / limit
Occupation
2024-10-02
Quartz, respirable, >1% Qtz
0.17
Crusher Oper/Worker
2024-10-02
Quartz, respirable, >1% Qtz
0.19
Crusher Oper/Worker
2024-10-02
Respirable dust, <.1mg
0
Front-end Loader Operator
2022-09-28
Nuisance dust, respirable, <1% Qtz
0.13
10
0.01
Laborer, Bullgang
2022-09-28
Respirable dust, <.1mg
0
Truck Driver
2022-09-28
Respirable dust, <.1mg
0
Front-end Loader Operator
2018-12-11
Unlisted Particulate, respirable, <1% Qtz
0.18
Crusher Oper/Worker
2018-12-11
Respirable dust, <.1mg
0
Laborer, Bullgang
2018-12-11
Respirable dust, <.1mg
0
Truck Driver
2018-12-11
Unlisted Particulate, respirable, <1% Qtz
0.22
Front-end Loader Operator
2017-11-01
Quartz, respirable, >1% Qtz
0.55
1.73
0.32
Laborer, Bullgang
2017-11-01
Quartz, respirable, >1% Qtz
0.16
1.38
0.12
Crusher Oper/Worker
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.
Queen Creek Stone 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 Arizona, metal and nonmetal mining averaged 1.81 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 *
5.60
0.00
0.000
2023 *
0.00
0.00
0.000
2022 *
0.00
0.00
0.000
2021 *
7.86
0.00
0.000
2019 *
7.63
7.63
0.000
2018 *
7.42
0.00
0.000
2017 *
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
17
2025
18
2024
17
2023
16
2022
15
2021
12
2020
10
2019
14
2018
13
2017
11
2016
7
2015
5
Source: MSHA quarterly employment and production, updated weekly.
Queen Creek Stone sits in Pinal County, Arizona, where the Census mining category is 0.8% 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.
Pinal County, Arizona · Population 449,219
0.8%
Mining share of county employment
$77,588
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
2026 Q2
8,664
0
0
0.0
2026 Q1
8,160
0
0
0.0
2025 Q4
8,396
0
0
0.0
2025 Q3
9,422
0
0
0.0
2025 Q2
10,533
0
0
0.0
2025 Q1
9,245
0
0
0.0
2024 Q4
9,246
1
1
108.2
2024 Q3
9,119
0
0
0.0
Show 38 earlier quartersHide earlier quarters
Quarter
Hours worked
Citations
S&S
Per 1M hrs
2024 Q2
8,930
0
0
0.0
2024 Q1
8,425
0
0
0.0
2023 Q4
8,432
5
2
593.0
2023 Q3
9,227
0
0
0.0
2023 Q2
9,376
3
0
320.0
2023 Q1
8,915
0
0
0.0
2022 Q4
7,916
0
0
0.0
2022 Q3
8,494
0
0
0.0
2022 Q2
7,969
0
0
0.0
2022 Q1
7,956
0
0
0.0
2021 Q4
6,243
0
0
0.0
2021 Q3
7,089
0
0
0.0
2021 Q2
6,714
1
0
148.9
2021 Q1
5,395
0
0
0.0
2020 Q4
4,474
1
0
223.5
2020 Q3
4,606
0
0
0.0
2020 Q2
4,178
1
0
239.3
2020 Q1
5,201
0
0
0.0
2019 Q4
5,543
0
0
0.0
2019 Q3
6,742
0
0
0.0
2019 Q2
7,358
1
0
135.9
2019 Q1
6,585
0
0
0.0
2018 Q4
6,865
1
1
145.7
2018 Q3
6,352
1
0
157.4
2018 Q2
6,802
0
0
0.0
2018 Q1
6,917
0
0
0.0
2017 Q4
6,174
0
0
0.0
2017 Q3
4,748
0
0
0.0
2017 Q2
5,898
1
1
169.5
2017 Q1
5,054
0
0
0.0
2016 Q4
3,336
0
0
0.0
2016 Q3
3,207
0
0
0.0
2016 Q2
3,012
0
0
0.0
2016 Q1
3,065
0
0
0.0
2015 Q4
3,088
0
0
0.0
2015 Q3
2,518
0
0
0.0
2015 Q2
2,322
0
0
0.0
2015 Q1
1,139
0
0
0.0
No fatalities recorded at this mine.
Reportable incidents
5 on file
2024 · 1 incident
December 6, 2024AZ · Metal/Non-Metalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techSLIP OR FALL OF PERSON
On 12/6/24 EE experienced a first aid injury to their left ankle when they exited a step ladder. On 12/9/24 EE sought medical attention where they were given work restrictions.
2021 · 1 incident
January 29, 2021AZ · Metal/Non-Metalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techMACHINERY
EE was welding in the primary feeder, while welding EE suffered flash burn not knowing until the next day. Cause was possible flash reflecting off the feeder coming through the back of EE's welding hood.
2019 · 1 incident
January 22, 2019AZ · Metal/Non-Metalclerk, timekeeper, office worker, director of salesPOWERED HAULAGE
EE was driving into work, when EE was pulling into the office parking lot at the Plant when EE's phone fell off the magnet holder in the air vent causing the phone to go between the floor and the accelerator pedal. When EE went to pick it up the vehicle veered into a rock blocking the electrical panel causing the vehicle to stop immediately.
2018 · 2 incidents
December 10, 2018AZ · Metal/Non-Metaloutside foreman, leadmanOTHER
WHILE EVALUATING CONDITION AND NEEDED REPAIRS ON B-10 TAIL PULLEY UNDER SCREEN 1 (PRIMARY), A GUST OF WIND BLEW IN EMPLOYEE'S FACE AND GOT UNDER SAFETY GLASSES. A PARTICLE ENTERED RIGHT EYE
September 21, 2018AZ · Metal/Non-Metalplumber, pipefitter, millwrightMACHINERY