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Gamboa Quarry: 48 MSHA citations Metal/Non-Metal

Danz Stone · Facility
Controlled by Joe Danz
Liberty Hall, Williamson County, TX  ·  Abandoned
MSHA Mine ID: 4104782

Gamboa Quarry has $14K in proposed MSHA penalties and $10K 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 2009
48
citations
9
significant & substantial
$14,208
proposed penalties
$4,483
paid to date
32% of proposed penalties paid to date, a $9,725 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2009
23
inspections on record
199
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: 199 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: 2012-04-04.
On record since 2011.
Source: MSHA imminent-danger order records, updated weekly.

Gamboa Quarry has $14K in proposed MSHA penalties and $10K 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.
$14K
proposed penalties
$14K
current assessed
$4K
paid to date
$10K
outstanding
42 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2015-09-17.
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.
21.4%
significant & substantial
42.9%
high negligence or reckless
21.4%
reasonably likely or greater
42.9%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 4.8% low, 52.4% moderate, 42.9% 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: 2011-04-13, 15 years ago
0%
of limit-tested samples over the exposure limit
3
samples
2
limit-tested
Most sampled contaminants
  • Nuisance dust, respirable, <1% Qtz1
  • Quartz, respirable, >1% Qtz1
  • Respirable dust, <.1mg1
Show the individual readings (3)
Date Contaminant Concentration Limit Conc / limit Occupation
2011-04-13 Respirable dust, <.1mg 0 Stone Polisher/Cutter
2011-04-13 Quartz, respirable, >1% Qtz 1.07 2.33 0.46 Stone Polisher/Cutter
2011-04-13 Nuisance dust, respirable, <1% Qtz 1.06 10 0.11 Stone Polisher/Cutter
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. Danz Stone 2009 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2014 2
2013 2
2012 3
2011 2
2010 2
2009 3
Source: MSHA quarterly employment and production, updated weekly.

Gamboa Quarry sits in Williamson County, Texas, where the Census mining category is 0.3% 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.
Williamson County, Texas · Population 643,889
0.3%
Mining share of county employment
$108,309
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
2014 Q3 960 0 0 0.0
2014 Q2 880 6 2 6818.2
2014 Q1 920 0 0 0.0
2013 Q4 1,120 1 0 892.9
2013 Q3 1,024 0 0 0.0
2013 Q2 936 1 1 1068.4
2013 Q1 1,152 0 0 0.0
2012 Q4 990 1 0 1010.1
Show 15 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2012 Q3 1,216 0 0 0.0
2012 Q2 400 3 1 7500.0
2012 Q1 1,320 0 0 0.0
2011 Q4 896 6 1 6696.4
2011 Q3 1,056 0 0 0.0
2011 Q2 1,440 6 0 4166.7
2011 Q1 300 0 0 0.0
2010 Q4 300 6 0 20000.0
2010 Q3 300 6 0 20000.0
2010 Q2 300 0 0 0.0
2010 Q1 300 2 0 6666.7
2009 Q4 300 0 0 0.0
2009 Q3 2,112 2 2 947.0
2009 Q2 1,560 0 0 0.0
2009 Q1 640 5 1 7812.5

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.