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: 288 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
Glendale Plant has $4K 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.
$4K
proposed penalties
$4K
current assessed
$4K
paid to date
$0
outstanding
19 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2026-03-05.
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: 2025-02-12
0%
of limit-tested samples over the exposure limit
6
samples
1
limit-tested
Most sampled contaminants
Respirable dust, <.1mg5
Quartz, respirable, >1% Qtz1
Show the individual readings (6)
Date
Contaminant
Concentration
Limit
Conc / limit
Occupation
2025-02-12
Respirable dust, <.1mg
0
Crusher Oper/Worker
2025-02-12
Respirable dust, <.1mg
0
Front-end Loader Operator
2025-02-12
Respirable dust, <.1mg
0
Crusher Oper/Worker
2017-06-15
Quartz, respirable, >1% Qtz
0.18
0.6
0.30
Crusher Oper/Worker
2017-06-15
Respirable dust, <.1mg
0
Front-end Loader Operator
2017-06-15
Respirable dust, <.1mg
0
Hydrating Plant 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.
Glendale 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 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 *
4.25
0.00
0.000
2023 *
0.00
0.00
0.000
2022 *
9.52
0.00
0.000
2021 *
15.14
5.05
0.000
2020 *
9.26
4.63
0.000
2019 *
9.50
0.00
0.000
2018 *
5.51
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
21
2025
20
2024
22
2023
19
2022
17
2021
17
2020
18
2019
17
2018
15
2017
13
2016
12
2015
6
2014
3
Source: MSHA quarterly employment and production, updated weekly.
Glendale Plant sits in Maricopa County, Arizona, where the Census mining category is 0.2% 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.
Maricopa County, Arizona · Population 4,491,987
0.2%
Mining share of county employment
$85,518
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
10,953
0
0
0.0
2026 Q1
10,493
1
0
95.3
2025 Q4
9,709
0
0
0.0
2025 Q3
10,857
0
0
0.0
2025 Q2
11,453
0
0
0.0
2025 Q1
10,248
1
0
97.6
2024 Q4
10,508
0
0
0.0
2024 Q3
10,395
1
0
96.2
Show 41 earlier quartersHide earlier quarters
Quarter
Hours worked
Citations
S&S
Per 1M hrs
2024 Q2
14,029
0
0
0.0
2024 Q1
12,111
1
0
82.6
2023 Q4
11,310
0
0
0.0
2023 Q3
11,983
0
0
0.0
2023 Q2
11,095
0
0
0.0
2023 Q1
10,941
0
0
0.0
2022 Q4
10,112
0
0
0.0
2022 Q3
9,532
1
0
104.9
2022 Q2
11,156
0
0
0.0
2022 Q1
11,219
0
0
0.0
2021 Q4
9,137
0
0
0.0
2021 Q3
9,799
0
0
0.0
2021 Q2
9,977
0
0
0.0
2021 Q1
10,717
0
0
0.0
2020 Q4
9,516
0
0
0.0
2020 Q3
11,627
0
0
0.0
2020 Q2
10,939
2
0
182.8
2020 Q1
11,092
0
0
0.0
2019 Q4
9,705
0
0
0.0
2019 Q3
10,178
0
0
0.0
2019 Q2
12,233
0
0
0.0
2019 Q1
10,004
1
0
100.0
2018 Q4
8,205
0
0
0.0
2018 Q3
9,157
2
1
218.4
2018 Q2
9,482
0
0
0.0
2018 Q1
9,450
4
0
423.3
2017 Q4
7,273
0
0
0.0
2017 Q3
7,655
0
0
0.0
2017 Q2
8,768
2
0
228.1
2017 Q1
6,572
0
0
0.0
2016 Q4
5,532
0
0
0.0
2016 Q3
6,662
0
0
0.0
2016 Q2
8,256
0
0
0.0
2016 Q1
7,494
0
0
0.0
2015 Q4
5,562
0
0
0.0
2015 Q3
4,136
0
0
0.0
2015 Q2
3,751
0
0
0.0
2015 Q1
1,509
0
0
0.0
2014 Q4
1,143
1
0
874.9
2014 Q3
1,095
0
0
0.0
2014 Q2
2,565
0
0
0.0
No fatalities recorded at this mine.
Reportable incidents
11 on file
2024 · 1 incident
February 5, 2024AZ · Metal/Non-Metalcrane operator, mobile equipment operator (meo), dragline operator, dropball operator, riggerSLIP OR FALL OF PERSON
Miner stepped out of operator's station of Cat 14H blade to close open engine bay door. In doing so miner stepped onto rear tire that was covered in mud, slipping & falling to the ground. This resulted in spraining left wrist. Miner had MRI completed on 3/10/24 & results were provided to SRMG safety on 3/12/24 stating there was in fact a fracture in the wrist. No other issues.
2022 · 2 incidents
June 16, 2022AZ · Metal/Non-Metalgreaser, grease man, oiler, lube man, dragline oilerHANDLING OF MATERIALS
Miner was adding engine oil to a 775G haulage truck. As EE was finishing the task, EE closed the engine compartment access hood/door. EE wasn't aware that EE's right thumb was placed on a pinch point area and struck EE's right thumb causing a laceration. EE was treated and received stitches. Miner was given restricted duty.
May 3, 2022AZ · Metal/Non-Metalgreaser, grease man, oiler, lube man, dragline oilerHANDLING OF MATERIALS
Miner was climbing the ladder of a 775 haul truck during servicing of equipment. While climbing miner felt a pull in lower left abdomen. Upon medical review miner was given restricted duty for a strain.
2021 · 3 incidents
September 27, 2021AZ · Metal/Non-Metalcrane operator, mobile equipment operator (meo), dragline operator, dropball operator, riggerPOWERED HAULAGE
Miner was operating a front end loader and sustained a contusion of lower back when the seat of the loader bottomed out when miner hit a bump. Miner was placed on restricted duty upon medical review of the injury.
July 29, 2021AZ · Metal/Non-Metalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techMACHINERY
Miner cut EE's left ring finger while changing segment plates from a John Deere 944K loader bucket requiring 8 stitches. Miner was holding bolt head as EE impacted the nut with the impact wrench spinning the head of the bolt.
January 15, 2021AZ · Metal/Non-Metalcrane operator, mobile equipment operator (meo), dragline operator, dropball operator, riggerPOWERED HAULAGE
Miner was stockpiling material away from the mortar sand stacker belt when the 988K loader EE was using came in contact with the belt. The belt was pulled onto the loader and the head pulley came thru the front windshield of the loader as it fell. Miner injured EE's left foot when the dash of the loader compressed onto EE's foot. Miner had surgery on foot to correct the injury.
2020 · 2 incidents
November 2, 2020AZ · Metal/Non-Metalcrane operator, mobile equipment operator (meo), dragline operator, dropball operator, riggerEXPLODING VESSELS UNDER PRESSURE
While operating a 745 Articulated Haul truck the left front tire blew out. Miner was parked loading next to a wall that redirected tire blast back towards the cab of the haul truck sending broken glass from the windows into the cab resulting in the miner getting cuts and abrasions to left side and right eye. Miner also sustained unknown temp hearing loss in left ear.
July 10, 2020AZ · Metal/Non-Metalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techHANDLING OF MATERIALS
Miner was replacing cutting edges on a 980G loader and in the process EE was pulling the center plate from underneath the bucket so it can be picked up with a boom. As the miner released the cutting edge and stood up, EE felt a "pop" in the lower right side of the back. This resulted in a muscle strain in EE's lower back.
2019 · 2 incidents
August 29, 2019AZ · Metal/Non-Metalcrusher attendant/operator, pan feeder operator/workerHANDLING OF MATERIALS
Miner was shoveling under a Jaw Crusher when they strained their left wrist and right elbow. Employee was sent for medical evaluation and placed on restricted duty. Miner returned to work and is currently working restricted duty.
Miner was using a box cutter to open the other packaging of some press bags for the wash plant when the cutter slipped and cut EE's right pointer finger. This resulted in the miner receiving medical treatment in the form of a Tetanus shot and stitches. Miner returned to work the next day on restricted duty.
2018 · 1 incident
February 6, 2018AZ · Metal/Non-Metalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techHANDTOOLS (NONPOWERED)
Miner struck a finger while using a 3 lb sledge hammer and a hole punch to punch holes in flashing while making repairs to the Fat Pak Crusher. This resulted in a crush injury to the left index finger and restricted duty.