Mining Incidents

Sprague Stone LLC Metal/Non-Metal

Sprague Stone LLC · Surface
Masonville, Larimer County, CO  ·  Active
MSHA Mine ID: 0505077

Sprague Stone LLC has $5K in proposed MSHA penalties and $302 outstanding across 0 contested dockets, plus health sampling and the full incident record.

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Fatalities
0
Total incidents
0
Years on record
Latest incident
Compliance record
MSHA citations since 2017
41
citations
3
significant & substantial
$5,150
proposed penalties
$4,848
paid to date
94% of proposed penalties paid to date, a $302 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2017
24
inspections on record
334
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: 334 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.

Sprague Stone LLC has $5K in proposed MSHA penalties and $302 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.
$5K
proposed penalties
$5K
current assessed
$5K
paid to date
$302
outstanding
39 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2025-08-14.
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 4,119 0 0 0.0
2025 Q3 3,595 2 0 556.3
2025 Q2 2,953 0 0 0.0
2025 Q1 1,378 0 0 0.0
2024 Q4 3,401 3 0 882.1
2024 Q3 3,908 0 0 0.0
2024 Q1 3,084 0 0 0.0
2023 Q4 2,807 4 1 1425.0
Show 33 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2023 Q3 4,821 0 0 0.0
2023 Q2 4,116 3 1 728.9
2023 Q1 3,325 0 0 0.0
2022 Q4 4,512 0 0 0.0
2022 Q3 4,985 0 0 0.0
2022 Q2 3,922 2 0 509.9
2022 Q1 2,881 2 0 694.2
2021 Q4 3,452 0 0 0.0
2021 Q3 4,732 1 0 211.3
2021 Q2 4,206 0 0 0.0
2021 Q1 3,014 1 0 331.8
2020 Q4 4,805 0 0 0.0
2020 Q3 5,048 0 0 0.0
2020 Q2 4,291 0 0 0.0
2020 Q1 3,643 0 0 0.0
2019 Q4 3,463 0 0 0.0
2019 Q3 4,931 0 0 0.0
2019 Q2 4,527 0 0 0.0
2019 Q1 3,702 0 0 0.0
2018 Q4 5,008 0 0 0.0
2018 Q3 4,989 0 0 0.0
2018 Q2 4,745 0 0 0.0
2018 Q1 3,847 0 0 0.0
2017 Q4 4,397 0 0 0.0
2017 Q3 5,321 0 0 0.0
2017 Q2 5,475 19 1 3470.3
2017 Q1 3,952 0 0 0.0
2016 Q4 2,968 0 0 0.0
2016 Q3 2,653 0 0 0.0
2016 Q2 2,898 0 0 0.0
2016 Q1 2,260 0 0 0.0
2015 Q4 2,196 0 0 0.0
2015 Q3 156 0 0 0.0

No reportable incidents on file.

MSHA has no recorded reportable accidents for this mine in the current dataset. New reports appear here within a week of being filed.

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The full compliance file on Sprague Stone LLC

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.