Mining Incidents

Sterling Screening Plant: 5 MSHA citations Metal/Non-Metal

Simon Contractors · Surface
Controlled by Colas S A
Sterling, Logan County, CO  ·  Intermittent
MSHA Mine ID: 0505074

Sterling Screening Plant has $684 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 2018
5
citations
0
significant & substantial
$684
proposed penalties
$684
paid to date
100% of proposed penalties paid to date, a $0 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2018
9
inspections on record
85
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: 85 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.

Sterling Screening Plant has $684 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.
$684
proposed penalties
$684
current assessed
$684
paid to date
$0
outstanding
5 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2025-03-18.
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.
0.0%
significant & substantial
20.0%
high negligence or reckless
0.0%
reasonably likely or greater
60.0%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 20.0% low, 60.0% moderate, 20.0% high, 0.0% reckless.
Source: MSHA violations gravity and negligence coding, updated weekly.
Health sampling
A sample is a point in time compliance measurement, not an individual exposure history. These figures describe MSHA sampling records and do not establish causation or personal dose.

Metal and nonmetal contaminants (personal samples)
Many samples are screening measurements of substances with no applicable exposure limit; they are counted as samples but excluded from every over-limit figure. Over-limit shares use only limit-tested samples.

Last sampled: 2020-03-25, 6 years ago
1
samples
0
limit-tested
Most sampled contaminants
  • Respirable dust, <.1mg1
Show the individual readings (1)
Date Contaminant Concentration Limit Conc / limit Occupation
2020-03-25 Respirable dust, <.1mg 0 Front-end Loader Operator
Source: MSHA respirable dust, quartz, and noise sampling records, updated weekly. Metal/nonmetal contaminant figures come from MSHA's Personal Health Samples and Area Samples files (public record), updated weekly.
Ownership history
  1. Simon Contractors 2017 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2026 0
2025 1
2024 1
2023 1
2022 1
2021 1
2020 1
2019 1
2018 2
2017 1
Source: MSHA quarterly employment and production, updated weekly.

Sterling Screening Plant sits in Logan County, Colorado, where the Census mining category is 1.6% 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.
Logan County, Colorado · Population 21,067
1.6%
Mining share of county employment
$55,074
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 97 0 0 0.0
2025 Q3 230 0 0 0.0
2025 Q2 447 0 0 0.0
2025 Q1 601 1 0 1663.9
2024 Q4 41 0 0 0.0
2024 Q3 571 2 0 3502.6
Show 26 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2024 Q2 68 0 0 0.0
2024 Q1 537 0 0 0.0
2023 Q4 354 0 0 0.0
2023 Q3 487 0 0 0.0
2023 Q2 913 0 0 0.0
2023 Q1 365 0 0 0.0
2022 Q4 212 0 0 0.0
2022 Q3 234 0 0 0.0
2022 Q2 73 0 0 0.0
2022 Q1 35 0 0 0.0
2021 Q4 629 0 0 0.0
2021 Q3 247 0 0 0.0
2021 Q2 98 0 0 0.0
2021 Q1 231 0 0 0.0
2020 Q4 531 0 0 0.0
2020 Q3 890 0 0 0.0
2020 Q2 860 0 0 0.0
2020 Q1 375 0 0 0.0
2019 Q4 453 0 0 0.0
2019 Q3 317 0 0 0.0
2019 Q2 365 0 0 0.0
2019 Q1 45 1 0 22222.2
2018 Q4 458 0 0 0.0
2018 Q3 650 0 0 0.0
2018 Q2 1,981 0 0 0.0
2017 Q4 1,115 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.