Mining Incidents

Lone Tree Creek Quarry Metal/Non-Metal

Controlled by Daniel W Hunt
Cheyenne, Laramie County, WY  ·  Active
MSHA Mine ID: 4801864

Lone Tree Creek Quarry has $6K in proposed MSHA penalties and $0 outstanding across 0 contested dockets, plus health sampling and the full incident record.

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Fatalities
0
Total incidents
1
Years on record
2026
Latest incident
Feb 2026
Compliance record
MSHA citations since 2024
17
citations
2
significant & substantial
$6,090
proposed penalties
$6,090
paid to date
100% of proposed penalties paid to date, a $0 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2024
8
inspections on record
106
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: 106 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.

Lone Tree Creek Quarry has $6K 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.
$6K
proposed penalties
$6K
current assessed
$6K
paid to date
$0
outstanding
17 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2026-04-16.
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 4,846 5 1 1031.8
2025 Q3 5,773 0 0 0.0
2025 Q2 5,974 1 0 167.4
2025 Q1 3,675 0 0 0.0
2024 Q4 4,819 5 0 1037.6
2024 Q3 6,130 0 0 0.0
2024 Q2 5,564 1 1 179.7
2024 Q1 4,198 0 0 0.0
Show 2 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2023 Q4 4,244 0 0 0.0
2023 Q3 5,919 0 0 0.0
No fatalities recorded at this mine.

Reportable incidents

1 on file

2026 · 1 incident

February 2, 2026 WY · Metal/Non-Metal assistant mine foreman, assistant mine manager HANDTOOLS (NONPOWERED)
Asphalt Specialties Co., Inc. · Struck by flying object

The miner was working on removing a bearing from a motor mount assembly. A small pry bar was being used to remove the bearing. The pry bar was under load when the miner struck the shaft with a hammer. The pry bar released and struck the miner in right cheek near the nose. The impact caused a laceration which required stitches and CT scans.

For insurers, brokers, and safety consultants

The full compliance file on Lone Tree Creek Quarry

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.