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Smithson Valley Quarry: 82 MSHA citations Metal/Non-Metal

San Antonio, Bexar County, TX  ·  Active
MSHA Mine ID: 4104108

Smithson Valley Quarry has $83K in proposed MSHA penalties and $72K outstanding across 3 contested dockets, plus health sampling and the full incident record.

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Fatalities
0
Total incidents
2
Years on record
2003–2005
Latest incident
Jul 2005
Compliance record
MSHA citations since 2001
82
citations
27
significant & substantial
$83,246
proposed penalties
$8,337
paid to date
10% of proposed penalties paid to date, a $74,909 gap.
Source: MSHA violations data, updated weekly.
See Martin Marietta Materials Southwest LLC's full MSHA compliance history →
Inspection activity
MSHA inspections since 2001
48
inspections on record
481
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: 481 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
Imminent-danger orders
ⓘ A Section 107(a) order removes miners from an area when an inspector finds an imminent danger. Each order is lifted once the condition is corrected, so this counts orders issued, not orders now in effect.
2
Section 107(a) orders
Most recent order: 2016-07-13.
On record since 2016.
Source: MSHA imminent-danger order records, updated weekly.

Smithson Valley Quarry has $83K in proposed MSHA penalties and $72K outstanding across 3 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.
$83K
proposed penalties
$80K
current assessed
$8K
paid to date
$72K
outstanding
79 assessments are final orders; 3 contested dockets.
Of $19K in penalties contested before the Commission, $16K was upheld in final decisions.
As of the most recent assessment on 2025-04-10.
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.
34.2%
significant & substantial
40.5%
high negligence or reckless
34.2%
reasonably likely or greater
57.0%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 2.5% low, 57.0% moderate, 40.5% high, 0.0% reckless.
Source: MSHA violations gravity and negligence coding, updated weekly.
When citations were contested
ⓘ Contesting a citation before the Federal Mine Safety and Health Review Commission is a lawful right. These figures state the public outcomes of that process, from MSHA's Contested Violations file.
7 citations taken to the federal commission · 9% of citations on record
  • Settled 6 · 86%
  • Stood as issued 1 · 14%
100%
S&S designation survived the contest
ⓘ Counts a Significant & Substantial citation as surviving when a settlement or judge's decision kept the designation, or the contest was dismissed or defaulted so the citation stands as issued. Vacated and withdrawn citations, and settlements that removed the designation, count against.
of 5 decided S&S contests · industry: 79%
15%
Penalty reduction in decided contests
$19K proposed, $16K after decisions · industry: 39%
Source: MSHA Contested Violations file (public record), updated weekly. A dismissed or defaulted contest leaves the citation standing as issued; a vacated or withdrawn citation is removed from the violation record. Latest contest filed 2017-11-15.
Contested penalties
ⓘ A reduction or dismissal at the Commission is a lawful outcome of contesting a proposed penalty. Figures are the proposed amount and the amount upheld in the docket's decision.
Largest penalties this mine contested before the Federal Mine Safety and Health Review Commission, with the outcome on record.
Docket Decision Judge Year Proposed / upheld
CENT 2017-0178 Dismissal Miller 2017 $9K → $9K
CENT 2017-171M Settlement Manning 2018 $9K → $6K
CENT 2015-0361 Settlement Miller 2015 $2K → $1K
Source: FMSHRC civil penalty dockets and decisions (public record), 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: 2023-05-02, 3 years ago
0%
of limit-tested samples over the exposure limit
2
samples
1
limit-tested
Most sampled contaminants
  • Nuisance dust, respirable, <1% Qtz1
  • Respirable dust, <.1mg1
Show the individual readings (2)
Date Contaminant Concentration Limit Conc / limit Occupation
2023-05-02 Respirable dust, <.1mg 0 Crusher Oper/Worker
2023-05-02 Nuisance dust, respirable, <1% Qtz 0.14 10 0.01 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.

Smithson Valley Quarry recorded 0.00 reportable injury cases per 100 full-time workers in 2021.

Injury rate, 2021
ⓘ This rate is reportable injury cases per 100 full-time-equivalent workers per year, computed as 200,000 times cases divided by MSHA operator-reported employee-hours. Cases are injuries MSHA graded degree 01 through 07; accident-only events that hurt no one are excluded, and so are contractor injuries, whose hours do not attach to a single mine. Rates begin in 2000, when quarterly employment reporting starts, and are withheld below 20,000 hours in a year.
0.00
total case rate
0.00
days-away rate
0.000
fatality rate
No reportable injury cases in any year shown. Employee-hours were reported in each of those years, so these are true zeros rather than missing data. Citations, listed in the compliance record above, are inspector-found violations and are counted separately from worker injuries.
Below average. The US metal and nonmetal mining average was 1.87 and the all-US-mining average was 2.19 cases per 100 workers.
In Texas, metal and nonmetal mining averaged 1.57 cases per 100 workers that year.
Under 100,000 employee-hours were reported that year, so a single case moves the rate by two or more. Read the figure as approximate.
Year total case rate days-away fatal
2021 * 0.00 0.00 0.000
2018 * 0.00 0.00 0.000
* Fewer than 100,000 employee-hours that year; the rate is less stable.
Source: injury cases from MSHA accident and injury records; employee-hours from MSHA quarterly employment reports. Rate is cases per 100 full-time-equivalent workers, operator employees only.
Ownership history
  1. Olmos Contracting 1, LLC 1999 to 2017
  2. Martin Marietta Materials Inc 2017 to 2024
  3. Martin Marietta Materials Southwest LLC 2024 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2026 3
2025 6
2024 7
2023 7
2022 7
2021 9
2020 8
2019 8
2018 9
2017 9
2016 13
2015 15
2014 5
2011 0
2010 0
2009 0
2008 7
2007 7
2006 4
2005 8
2004 8
2003 8
2002 2
2001 7
2000 9
Source: MSHA quarterly employment and production, updated weekly.

Smithson Valley Quarry sits in Bexar County, Texas, where the Census mining category is 0.6% 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.
Bexar County, Texas · Population 2,037,344
0.6%
Mining share of county employment
$70,571
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 610 0 0 0.0
2026 Q1 1,035 0 0 0.0
2025 Q4 1,974 0 0 0.0
2025 Q3 2,093 0 0 0.0
2025 Q2 3,398 1 0 294.3
2025 Q1 2,910 1 0 343.6
2024 Q4 3,327 0 0 0.0
2024 Q3 3,707 1 0 269.8
Show 85 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2024 Q2 4,189 0 0 0.0
2024 Q1 2,971 0 0 0.0
2023 Q4 1,653 0 0 0.0
2023 Q3 4,724 0 0 0.0
2023 Q2 5,010 2 0 399.2
2023 Q1 4,187 0 0 0.0
2022 Q4 1,702 1 0 587.5
2022 Q3 4,973 0 0 0.0
2022 Q2 5,129 1 0 195.0
2022 Q1 4,549 0 0 0.0
2021 Q4 5,542 0 0 0.0
2021 Q3 5,143 0 0 0.0
2021 Q2 5,326 0 0 0.0
2021 Q1 4,527 0 0 0.0
2020 Q4 5,381 0 0 0.0
2020 Q3 3,453 1 0 289.6
2020 Q2 4,352 0 0 0.0
2020 Q1 5,238 0 0 0.0
2019 Q4 3,655 1 0 273.6
2019 Q3 5,546 0 0 0.0
2019 Q2 4,937 1 0 202.6
2019 Q1 5,067 0 0 0.0
2018 Q4 5,269 0 0 0.0
2018 Q3 5,334 0 0 0.0
2018 Q2 5,561 2 0 359.6
2018 Q1 5,712 0 0 0.0
2017 Q4 4,297 0 0 0.0
2017 Q3 4,545 0 0 0.0
2017 Q1 4,204 5 1 1189.3
2016 Q4 4,805 1 0 208.1
2016 Q3 3,141 17 11 5412.3
2016 Q2 3,745 1 0 267.0
2016 Q1 3,737 0 0 0.0
2015 Q4 4,533 3 1 661.8
2015 Q3 6,600 0 0 0.0
2015 Q2 6,321 9 1 1423.8
2015 Q1 1,111 14 4 12601.3
2014 Q4 5,698 0 0 0.0
2014 Q3 3,193 0 0 0.0
2014 Q2 2,552 0 0 0.0
2014 Q1 2,083 0 0 0.0
2011 Q1 0 0 0
2010 Q4 0 0 0
2010 Q3 0 0 0
2010 Q2 0 0 0
2010 Q1 0 0 0
2009 Q4 0 0 0
2009 Q3 0 0 0
2009 Q2 0 0 0
2009 Q1 0 0 0
2008 Q3 1,085 0 0 0.0
2008 Q2 1,166 0 0 0.0
2008 Q1 682 0 0 0.0
2007 Q4 725 0 0 0.0
2007 Q3 837 0 0 0.0
2007 Q2 895 0 0 0.0
2007 Q1 717 0 0 0.0
2006 Q4 40 0 0 0.0
2006 Q3 28 0 0 0.0
2006 Q2 0 0 0
2006 Q1 1,652 0 0 0.0
2005 Q4 897 1 1 1114.8
2005 Q3 2,774 0 0 0.0
2005 Q2 3,210 1 0 311.5
2005 Q1 1,031 0 0 0.0
2004 Q4 277 0 0 0.0
2004 Q3 2,405 0 0 0.0
2004 Q2 2,737 0 0 0.0
2004 Q1 2,932 1 0 341.1
2003 Q4 3,168 0 0 0.0
2003 Q3 2,625 1 0 381.0
2003 Q2 2,170 0 0 0.0
2003 Q1 1,497 0 0 0.0
2002 Q4 1,726 0 0 0.0
2002 Q3 0 0 0
2002 Q2 0 0 0
2002 Q1 0 0 0
2001 Q4 0 0 0
2001 Q3 164 0 0 0.0
2001 Q2 1,314 0 0 0.0
2001 Q1 1,043 4 4 3835.1
2000 Q4 893 0 0 0.0
2000 Q3 298 0 0 0.0
2000 Q2 1,065 0 0 0.0
2000 Q1 1,076 0 0 0.0
No fatalities recorded at this mine.

Reportable incidents

2 on file

2005 · 1 incident

July 7, 2005 TX · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer SLIP OR FALL OF PERSON
Olmos Contracting 1, LLC · Fall onto or against objects

EE TRIPPED ON THE BOTTOM EDGE OF THE TRUCK WEIGH SCALE, AS HE EXITED THE SCALE HOUSE. HE STUCK OUT HIS LEFT HAND TO CATCH HIMSELF. HIS HAND GOT CAUGHT IN THE GAP BETWEEN THE TOP OF THE HEADLIGHTS AND THE BOTTOM OF THE HOOD. A SMALL ROUND PIECE OF GLASS LACERATED HIS HAND, REQUIRING SUTURES

2003 · 1 incident

August 12, 2003 TX · Metal/Non-Metal mine manager, mine foreman, mine owner HANDLING OF MATERIALS
Olmos Contracting 1, LLC · Struck by falling object

EE WAS HELPING UNLOAD A PIECE OF EQUIPMENT AND RELEASED TY DOWN. CHAINS BEFORE ATTACHING LIFTING DEVICES. FOOT WAS UNDER EQUIPMENT AND EQUIPMENT SLIPPED, PINNING FOOT UNDER IT.