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.
Lone Tree Creek Quarry Metal/Non-Metal
Asphalt Specialties Co., Inc.
· Surface
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.
Watch this mine
Email me when a new MSHA incident is filed at Lone Tree Creek Quarry.
- 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.
See also
the operator's enforcement record
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 Hide 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 file2026 · 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
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.