Mining Incidents

DIAMOND P AGGREGATES II: 38 MSHA citations Metal/Non-Metal

DIAMOND P AGGGREGATES II LTD. · Surface
Velera, Coleman County, TX  ·  Intermittent
MSHA Mine ID: 4104531

DIAMOND P AGGREGATES II has $5K in proposed MSHA penalties and $400 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 2005
38
citations
2
significant & substantial
$4,816
proposed penalties
$4,416
paid to date
92% of proposed penalties paid to date, a $400 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2005
19
inspections on record
242
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: 242 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.

DIAMOND P AGGREGATES II has $5K in proposed MSHA penalties and $400 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
$4K
paid to date
$400
outstanding
38 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2026-03-24.
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.
5.3%
significant & substantial
0.0%
high negligence or reckless
5.3%
reasonably likely or greater
39.5%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 7.9% low, 92.1% 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: 2025-09-03
0%
of limit-tested samples over the exposure limit
5
samples
2
limit-tested
Most sampled contaminants
  • Nuisance dust, respirable, <1% Qtz2
  • Respirable dust, <.1mg2
  • Quartz, respirable, >1% Qtz1
Show the individual readings (5)
Date Contaminant Concentration Limit Conc / limit Occupation
2025-09-03 Nuisance dust, respirable, <1% Qtz 0.27 10 0.03 Front-end Loader Operator
2025-09-03 Quartz, respirable, >1% Qtz 0.35 Crusher Oper/Worker
2010-05-26 Respirable dust, <.1mg 0 Supervisor, Co. Official
2010-05-26 Nuisance dust, respirable, <1% Qtz 0.21 10 0.02 Drill Operator, Rotary
2010-05-26 Respirable dust, <.1mg 0 Drill Helper
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. Slick Machines 2005 to 2019
  2. DIAMOND P AGGGREGATES II LTD. 2019 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2026 1
2025 2
2024 2
2023 2
2022 2
2021 2
2020 1
2019 1
2011 0
2010 1
2008 0
2007 2
2006 2
2005 2
Source: MSHA quarterly employment and production, updated weekly.

DIAMOND P AGGREGATES II sits in Coleman County, Texas, where the Census mining category is 1.3% 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.
Coleman County, Texas · Population 7,765
1.3%
Mining share of county employment
$52,364
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 Q1 63 1 0 15873.0
2025 Q4 389 0 0 0.0
2025 Q3 707 2 0 2828.9
2025 Q2 713 0 0 0.0
2025 Q1 520 0 0 0.0
2024 Q4 582 0 0 0.0
2024 Q3 508 0 0 0.0
2024 Q2 359 3 0 8356.5
Show 38 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2024 Q1 316 0 0 0.0
2023 Q4 378 0 0 0.0
2023 Q3 360 0 0 0.0
2023 Q2 227 0 0 0.0
2023 Q1 387 0 0 0.0
2022 Q4 312 1 1 3205.1
2022 Q3 320 0 0 0.0
2022 Q2 299 0 0 0.0
2022 Q1 256 0 0 0.0
2021 Q4 416 0 0 0.0
2021 Q3 460 0 0 0.0
2021 Q2 340 0 0 0.0
2021 Q1 378 2 0 5291.0
2020 Q4 336 0 0 0.0
2020 Q3 170 0 0 0.0
2020 Q2 141 1 0 7092.2
2020 Q1 160 0 0 0.0
2019 Q4 54 1 0 18518.5
2019 Q3 0 0 0
2011 Q1 0 0 0
2010 Q4 0 0 0
2010 Q3 0 0 0
2010 Q2 112 4 0 35714.3
2008 Q4 0 0 0
2008 Q3 0 0 0
2008 Q2 0 0 0
2008 Q1 0 0 0
2007 Q4 0 0 0
2007 Q3 380 0 0 0.0
2007 Q2 320 0 0 0.0
2007 Q1 420 0 0 0.0
2006 Q4 990 0 0 0.0
2006 Q3 368 6 0 16304.3
2006 Q2 1,188 0 0 0.0
2006 Q1 1,402 0 0 0.0
2005 Q4 1,354 1 0 738.6
2005 Q3 869 15 0 17261.2
2005 Q2 1,429 1 1 699.8

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.