Mining Incidents

Stockton Pit Metal/Non-Metal

Kilgore Contracting · Surface
Controlled by Summit Materials LLC
Stockton, Tooele County, UT  ·  Active
MSHA Mine ID: 4202480

Stockton Pit has $15K in proposed MSHA penalties and $2K outstanding across 3 contested dockets, plus health sampling and the full incident record.

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Fatalities
0
Total incidents
8
Years on record
2009–2025
Latest incident
Sep 2025
Compliance record
MSHA citations since 2008
65
citations
17
significant & substantial
$14,958
proposed penalties
$12,973
paid to date
87% of proposed penalties paid to date, a $1,985 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2008
33
inspections on record
502
inspection hours
n/a
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: 502 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.

Stockton Pit has $15K in proposed MSHA penalties and $2K 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.
$15K
proposed penalties
$15K
current assessed
$13K
paid to date
$2K
outstanding
62 assessments are final orders; 3 contested dockets.
As of the most recent assessment on 2026-01-15.
Source: MSHA assessed-violations and conference/litigation data, updated weekly.
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
2025 Q4 7,504 0 0 0.0
2025 Q3 9,470 0 0 0.0
2025 Q2 8,056 3 0 372.4
2025 Q1 6,258 0 0 0.0
2024 Q4 8,698 1 0 115.0
2024 Q3 7,920 1 1 126.3
2024 Q2 7,947 1 0 125.8
2024 Q1 5,174 0 0 0.0
Show 54 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2023 Q4 6,948 1 0 143.9
2023 Q3 7,405 0 0 0.0
2023 Q2 5,815 0 0 0.0
2023 Q1 3,528 0 0 0.0
2022 Q4 7,462 1 0 134.0
2022 Q3 7,880 0 0 0.0
2022 Q2 8,028 12 3 1494.8
2022 Q1 7,032 0 0 0.0
2021 Q4 6,707 2 0 298.2
2021 Q3 6,499 1 1 153.9
2021 Q2 5,654 1 0 176.9
2021 Q1 4,783 0 0 0.0
2020 Q4 5,187 1 1 192.8
2020 Q3 5,433 0 0 0.0
2020 Q2 4,993 2 0 400.6
2020 Q1 5,039 0 0 0.0
2019 Q4 5,913 0 0 0.0
2019 Q3 4,717 0 0 0.0
2019 Q2 3,931 0 0 0.0
2019 Q1 1,468 0 0 0.0
2018 Q4 0 0 0
2018 Q3 817 0 0 0.0
2018 Q2 2,970 0 0 0.0
2018 Q1 1,207 0 0 0.0
2015 Q2 0 0 0
2015 Q1 0 0 0
2014 Q4 0 0 0
2014 Q3 0 0 0
2013 Q4 320 0 0 0.0
2013 Q3 738 0 0 0.0
2013 Q2 3,751 6 1 1599.6
2013 Q1 2,308 0 0 0.0
2012 Q4 4,008 0 0 0.0
2012 Q3 4,518 4 1 885.3
2012 Q2 4,256 0 0 0.0
2012 Q1 2,696 4 1 1483.7
2011 Q4 4,612 0 0 0.0
2011 Q3 4,442 0 0 0.0
2011 Q2 3,997 0 0 0.0
2011 Q1 1,727 0 0 0.0
2010 Q4 2,525 0 0 0.0
2010 Q3 3,719 0 0 0.0
2010 Q2 4,359 0 0 0.0
2010 Q1 2,219 3 2 1352.0
2009 Q4 3,059 0 0 0.0
2009 Q3 4,294 0 0 0.0
2009 Q2 3,746 6 4 1601.7
2009 Q1 1,928 0 0 0.0
2008 Q4 3,493 4 0 1145.1
2008 Q3 2,076 0 0 0.0
2008 Q2 4,439 0 0 0.0
2008 Q1 3,938 4 1 1015.7
2007 Q4 4,686 0 0 0.0
2007 Q3 3,798 0 0 0.0
No fatalities recorded at this mine.

Reportable incidents

8 on file

2025 · 1 incident

September 30, 2025 UT · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech SLIP OR FALL OF PERSON
Kilgore Contracting · Over-exertion (Not Elsewhere Classified)

The employee was walking around EE's service truck walking on uneven surface throwing away trash, flashing, and old bearing housing that were in the back of the service truck, when the employee felt a pop in EE's left knee.

2022 · 1 incident

August 4, 2022 UT · Metal/Non-Metal outside foreman, leadman MACHINERY
Kilgore Contracting · Caught in, under or between a moving and a stationary object

Employee removed a bolt from a wash plant pinching EE's finger causing a laceration to EE's right little finger requiring stitches.

2012 · 1 incident

September 4, 2012 UT · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer HANDTOOLS (NONPOWERED)
Kilgore Contracting · Caught in, under or between a moving and a stationary object

Employee was using a pry bar to lift steel plate to remove a rock that was stuck behind the plate. His hand slid off bar and pinched his right hand between the plate and the rock that he was removing.

2011 · 1 incident

December 3, 2011 UT · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer HANDLING OF MATERIALS
Kilgore Contracting · Struck against stationary object

Employee was climbing the access ladder to a 980H loader and struck knee on bottom of the next step up causing a contusion

2010 · 3 incidents

June 28, 2010 UT · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
Peak Construction Material · Struck by... (Not Elsewhere Classified)

EE was in the process of changing mantle head on crusher, large wrench slipped hitting EE on right knee causing a laceration

June 28, 2010 UT · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
Peak Construction Material · Struck against stationary object

while decending from repair job on rock chute Employee struck shin on piece of metal

March 1, 2010 UT · Metal/Non-Metal outside foreman, leadman HANDTOOLS (NONPOWERED)
Peak Construction Material · Struck by... (Not Elsewhere Classified)

While using a chisel to remove the teeth on a loader bucket, the chisel had broke when struck by the hammer causing injury to miners left hand

2009 · 1 incident

For insurers, brokers, and safety consultants

The full compliance file on Stockton Pit

A dated report covering the 26-year penalty trail, line-item violation pattern, contest and docket posture, rate-normalized peer benchmark, and full fatality history. Delivered as a PDF with the underlying data as CSV.