Mining Incidents

Alleyton Resource Company LLC: 2 recorded fatalities operator

Controlled by Summit Materials LLC
MSHA operator ID: 0108226

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Fatalities
2
Total incidents
26
Mines on record
13
Years on record
2012–2026
Compliance record
MSHA citations since 2010
316
citations
47
significant & substantial
$98,345
proposed penalties
$78,169
paid to date
79% of proposed penalties paid to date, a $20,176 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2010
273
inspections on record
3,830
inspection hours
8.3
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.
316 citations across 3,830 inspection hours.
Source: MSHA inspections data, updated weekly.
Penalty disposition
Differences between proposed and paid penalties reflect both settlements and conference reductions and amounts still owed. Outstanding is the balance currently owed.
$98K
proposed penalties
$88K
current assessed
$78K
paid to date
$10K
outstanding
308 assessments are final orders; 3 contested dockets.
Of $16K in penalties contested before the Commission, $6K was upheld in final decisions.
As of the most recent assessment on 2026-07-08.
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.
15.0%
significant & substantial
5.7%
high negligence or reckless
15.0%
reasonably likely or greater
22.6%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 8.9% low, 85.4% moderate, 5.7% high, 0.0% reckless.
Source: MSHA violations gravity and negligence coding, updated weekly.
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.
1.46
total case rate
0.49
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.
Year total case rate days-away fatal
2026 1.97 0.99 0.000
2025 1.46 0.49 0.000
2024 0.46 0.00 0.000
2023 0.45 0.45 0.448
2022 0.43 0.00 0.000
2021 0.96 0.48 0.479
2020 0.55 0.00 0.000
2019 0.76 0.76 0.000
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.
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: 2026-06-10
0%
of limit-tested samples over the exposure limit
82
samples
3
limit-tested
Most sampled contaminants
  • Respirable dust, <.1mg74
  • Quartz, respirable, >1% Qtz4
  • Unlisted Particulate, respirable, <1% Qtz4
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.
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.
2 citations taken to the federal commission · 1% of citations on record
  • Settled 2 · 100%
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 2 decided S&S contests · industry: 79%
64%
Penalty reduction in decided contests
$16K proposed, $6K 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 2024-05-29. Vacated and withdrawn citations are removed from the file this view attributes through, so that outcome is slightly undercounted here.
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 operator contested before the Federal Mine Safety and Health Review Commission, with the outcome on record.
Docket Decision Judge Year Proposed / upheld
CENT 2024-0232 Settlement Paez 2025 $12K → $2K
CENT 2024-0206 Settlement Paez 2025 $4K → $4K
CENT 2015-0590 Withdrawal Lesnick 2016 $108 → $0
Source: FMSHRC civil penalty dockets and decisions (public record), updated weekly.

Top causes

Incident timeline

2026
2
2025
4
2024
1
2023
2 (1f)
2022
2
2021
2 (1f)
2020
1
2019
1
2018
3
2017
3
2015
3
2014
1
2012
1

Mines on record

Fatalities under this operator

2 recorded
June 1, 2023 TX · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver Fatality · MACHINERY
Alleyton Resource Company, LLC. · Struck by rolling or sliding object

An outside truck driver came onto this site to get loaded where the driver then parked their truck and was out of view from out scale house. Driver began to work on the back of the truck where the air bag blew out from under the truck and hit the driver in the head. Driver was not our employee, nor was the driver supposed to be working on their truck.

October 20, 2021 TX · Metal/Non-Metal welder (non-shop) Fatality · MACHINERY
Alleyton Resource Company, LLC. · Struck by powered moving object

An employee was fatally injured during maintenance work on the hopper. EE was operating a CAT forklift in close proximity to a Volvo excavator. EE exited the vehicle without notifying the other employees working in the area. Other employees stated they heard a "pop" and found the forklift operator unconscious next to the fork of the forklift.

For insurers, brokers, and safety consultants

Where Alleyton Resource Company LLC stands on silica, penalties, and injury rate

MSHA's standard limits respirable silica to 50 micrograms per cubic metre, but MSHA publishes dust and quartz as separate files and never the silica figure itself. We derive it per sample, score it against the limit, and set the operator's injury rate against a benchmark built from the full MSHA operator record. With the 26-year penalty trail, contest posture, and fatality history. Delivered as a PDF with the underlying data as CSV.

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