Mining Incidents

Merrill Pit 1: 17 MSHA citations Metal/Non-Metal

Rocky Mountain Sand & Gravel, LLC · Surface
Cheyenne, Laramie County, WY  ·  Intermittent
MSHA Mine ID: 4801804

Merrill Pit 1 has $2K 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
0
Years on record
Latest incident
Compliance record
MSHA citations since 2017
17
citations
5
significant & substantial
$2,360
proposed penalties
$2,360
paid to date
100% of proposed penalties paid to date, a $0 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2017
8
inspections on record
83
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: 83 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.

Merrill Pit 1 has $2K 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.
$2K
proposed penalties
$2K
current assessed
$2K
paid to date
$0
outstanding
17 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2025-10-08.
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.
29.4%
significant & substantial
0.0%
high negligence or reckless
29.4%
reasonably likely or greater
17.6%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 17.6% low, 82.4% moderate, 0.0% high, 0.0% reckless.
Source: MSHA violations gravity and negligence coding, updated weekly.
Ownership history
  1. Rocky Mountain Sand & Gravel, LLC 2016 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2026 0
2025 2
2024 3
2023 3
2022 2
2021 4
2020 4
2019 3
2018 2
2017 4
2016 5
Source: MSHA quarterly employment and production, updated weekly.

Merrill Pit 1 sits in Laramie County, Wyoming, where the Census mining category is 1.2% of county employment.

Local economic context
County figures come from the US Census Bureau's American Community Survey, 5-year pooled estimates, so the 2023 vintage covers 2019 through 2023. The Census category is 'mining, quarrying, and oil and gas extraction', which is broader than MSHA jurisdiction and includes oil and gas workers no mine employs. These figures describe the surrounding county, not this mine, and are not a factor in any specific incident.
Laramie County, Wyoming · Population 100,661
1.2%
Mining share of county employment
$77,884
Median household income
Source: US Census Bureau, American Community Survey 2023 5-year estimates.
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
2026 Q2 0 0 0
2026 Q1 0 0 0
2025 Q4 1 4 0 4000000.0
2025 Q3 1 0 0 0.0
2025 Q2 41 0 0 0.0
2025 Q1 1 1 0 1000000.0
2024 Q4 33 0 0 0.0
2024 Q3 1 0 0 0.0
Show 31 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2024 Q2 196 0 0 0.0
2024 Q1 271 0 0 0.0
2023 Q4 45 0 0 0.0
2023 Q3 3 0 0 0.0
2023 Q2 9 0 0 0.0
2023 Q1 12 0 0 0.0
2022 Q4 55 0 0 0.0
2022 Q3 0 0 0
2022 Q2 90 0 0 0.0
2022 Q1 2 0 0 0.0
2021 Q4 18 0 0 0.0
2021 Q3 184 0 0 0.0
2021 Q2 79 0 0 0.0
2021 Q1 342 0 0 0.0
2020 Q4 8 0 0 0.0
2020 Q3 180 0 0 0.0
2020 Q2 12 0 0 0.0
2020 Q1 168 0 0 0.0
2019 Q4 3 0 0 0.0
2019 Q3 3 0 0 0.0
2019 Q2 8 1 0 125000.0
2019 Q1 26 0 0 0.0
2018 Q4 3 0 0 0.0
2018 Q3 0 0 0
2018 Q2 178 10 5 56179.8
2018 Q1 329 0 0 0.0
2017 Q4 428 0 0 0.0
2017 Q3 32 1 0 31250.0
2017 Q2 11 0 0 0.0
2017 Q1 534 0 0 0.0
2016 Q4 104 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.