Mining Incidents

SPYDER SCREEN PLANT: 1 MSHA citation Metal/Non-Metal

Controlled by Ezra Eldon Lee
Arboles, La Plata County, CO  ·  Intermittent
MSHA Mine ID: 0505145

SPYDER SCREEN PLANT has $147 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
2024
Latest incident
Jul 2024
Compliance record
MSHA citations since 2023
1
citations
0
significant & substantial
$147
proposed penalties
$147
paid to date
100% of proposed penalties paid to date, a $0 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2022
6
inspections on record
54
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: 54 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.

SPYDER SCREEN PLANT has $147 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.
$147
proposed penalties
$147
current assessed
$147
paid to date
$0
outstanding
1 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2023-12-20.
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
0.0%
high negligence or reckless
0.0%
reasonably likely or greater
0.0%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 0.0% low, 100.0% moderate, 0.0% 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: 2023-12-20
0%
of limit-tested samples over the exposure limit
3
samples
1
limit-tested
Most sampled contaminants
  • Respirable dust, <.1mg2
  • Quartz, respirable, >1% Qtz1
Show the individual readings (3)
Date Contaminant Concentration Limit Conc / limit Occupation
2023-12-20 Quartz, respirable, >1% Qtz 0.27 0.3 0.90 Dry Screen Plant Operator
2022-08-17 Respirable dust, <.1mg 0 Front-end Loader Operator
2022-08-17 Respirable dust, <.1mg 0 Truck Driver
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. Crossfire Aggregate Services, LLC 2022 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2026 2
2025 3
2024 4
2023 5
2022 2
Source: MSHA quarterly employment and production, updated weekly.

SPYDER SCREEN PLANT sits in La Plata County, Colorado, where the Census mining category is 1.1% 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.
La Plata County, Colorado · Population 56,088
1.1%
Mining share of county employment
$85,296
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 297 0 0 0.0
2026 Q1 250 0 0 0.0
2025 Q4 421 0 0 0.0
2025 Q3 375 0 0 0.0
2025 Q2 200 0 0 0.0
2025 Q1 220 0 0 0.0
2024 Q4 1,199 0 0 0.0
2024 Q3 1,081 0 0 0.0
Show 8 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2024 Q2 1,388 0 0 0.0
2024 Q1 912 0 0 0.0
2023 Q4 345 1 0 2898.6
2023 Q2 603 0 0 0.0
2023 Q1 0 0 0
2022 Q4 360 0 0 0.0
2022 Q3 2,096 0 0 0.0
2022 Q2 424 0 0 0.0
No fatalities recorded at this mine.

Reportable incidents

1 on file

2024 · 1 incident

July 15, 2024 CO · Metal/Non-Metal prep plant foreman, supervisor, mill plant supervisor, kiln supervisor SLIP OR FALL OF PERSON
Crossfire Aggregate Services, LLC · Fall from machine

Miner was working on the inoperative screening plant. EE was bent over, on the deck, about 5 ft above ground. EE stood up too quickly and passed out, falling back over the guardrail to the ground, landing on and injuring their shoulder and upper back. EE's helper, returning from an errand 1-2 min later, found EE conscious on the ground in pain, helped and radioed for help.