Mining Incidents

North American Silica Sand, LLC: 1 recorded fatality Metal/Non-Metal

Controlled by Ignacio Martinez
Poteet, Atascosa County, TX  ·  Intermittent
MSHA Mine ID: 4105470

North American Silica Sand, LLC has had 1 fatality among 1 reportable incident since 2026. MSHA has proposed $27K in penalties since 2019, with $24K outstanding.

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Fatalities
1
Total incidents
1
Years on record
2026
Latest incident
Mar 2026
Compliance record
MSHA citations since 2019
85
citations
27
significant & substantial
$26,561
proposed penalties
$2,295
paid to date
9% of proposed penalties paid to date. The remaining $24,266 was reduced, settled, contested or is still owed.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2019
21
inspections on record
518
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: 518 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.

North American Silica Sand, LLC has $27K in proposed MSHA penalties and $24K 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.
$27K
proposed penalties
$27K
current assessed
$2K
paid to date
$24K
outstanding
36 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2026-09-15.
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.
41.5%
significant & substantial
13.8%
high negligence or reckless
41.5%
reasonably likely or greater
50.8%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 9.2% low, 76.9% moderate, 13.8% high, 0.0% reckless.
Source: MSHA violations gravity and negligence coding, updated weekly.
Ownership history
  1. Proppant Tech - Poteet LLC 2019 to 2022
  2. North American Silica Sand, LLC 2022 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2026 8
2025 8
2024 6
2023 35
2022 27
Source: MSHA quarterly employment and production, updated weekly; years before 2000 come from MSHA's archived Part 50 employment files.

North American Silica Sand, LLC sits in Atascosa County, Texas, where the Census mining category is 7.1% 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.
Atascosa County, Texas · Population 50,058
7.1%
Mining share of county employment
$69,413
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; earlier incidents are counted but not rate-adjusted, though reported hours reach back to 1983. 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 4,834 0 0 0.0
2026 Q1 2,551 1 0 392.0
2025 Q4 2,865 0 0 0.0
2025 Q3 5,989 1 0 167.0
2025 Q2 1,900 0 0 0.0
2024 Q4 2,471 0 0 0.0
2024 Q3 2,429 0 0 0.0
2024 Q2 2,545 0 0 0.0
Show 6 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2024 Q1 2,757 2 1 725.4
2023 Q2 10,321 0 0 0.0
2023 Q1 22,557 14 4 620.6
2022 Q4 13,171 0 0 0.0
2022 Q3 15,759 7 1 444.2
2022 Q2 7,816 0 0 0.0

Fatalities at this mine

1 recorded