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Penrose Ranch Gravel Pit: 130 MSHA citations Metal/Non-Metal

Florence, Fremont County, CO  ·  Active
MSHA Mine ID: 0504509

Penrose Ranch Gravel Pit has $38K in proposed MSHA penalties and $604 outstanding across 3 contested dockets, plus health sampling and the full incident record.

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Fatalities
0
Total incidents
5
Years on record
1995–2016
Latest incident
Nov 2016
Compliance record
MSHA citations since 2000
130
citations
25
significant & substantial
$37,908
proposed penalties
$31,098
paid to date
82% of proposed penalties paid to date, a $6,810 gap.
Source: MSHA violations data, updated weekly.
See Martin Marietta Materials Inc.'s full MSHA compliance history →
Inspection activity
MSHA inspections since 2000
59
inspections on record
1,043
inspection hours
12.5
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.
130 citations across 1,043 inspection hours.
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.
1
Section 107(a) orders
Most recent order: 2015-04-29.
On record since 2015.
Source: MSHA imminent-danger order records, updated weekly.

Penrose Ranch Gravel Pit has $38K in proposed MSHA penalties and $604 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.
$38K
proposed penalties
$32K
current assessed
$31K
paid to date
$604
outstanding
120 assessments are final orders; 3 contested dockets.
Of $15K in penalties contested before the Commission, $9K was upheld in final decisions.
As of the most recent assessment on 2026-06-04.
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.
19.4%
significant & substantial
7.8%
high negligence or reckless
19.4%
reasonably likely or greater
55.8%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 28.7% low, 63.6% moderate, 7.8% 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.
9 citations taken to the federal commission · 7% of citations on record
  • Settled 6 · 67%
  • Stood as issued 3 · 33%
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%
42%
Penalty reduction in decided contests
$15K proposed, $9K 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 2023-04-20.
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
WEST 2015-0833 Settlement Lesnick 2016 $14K → $8K
WEST 2020-0420 Dismissal 2020 $246 → $0
WEST 2023-0199 Default 2023 $143 → $143
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: 2024-02-28
0%
of limit-tested samples over the exposure limit
35
samples
12
limit-tested
Most sampled contaminants
  • Respirable dust, <.1mg17
  • Quartz, respirable, >1% Qtz16
  • Unlisted Particulate, respirable, <1% Qtz2
Show the individual readings (35)
Date Contaminant Concentration Limit Conc / limit Occupation
2024-02-28 Respirable dust, <.1mg 0 Front-end Loader Operator
2024-02-28 Quartz, respirable, >1% Qtz 0.13 0.75 0.17 Mechanic
2024-02-28 Quartz, respirable, >1% Qtz 0.12 Dry Screen Plant Operator
2024-02-28 Respirable dust, <.1mg 0 Front-end Loader Operator
2023-02-22 Respirable dust, <.1mg 0 Laborer, Bullgang
2023-02-22 Respirable dust, <.1mg 0 Front-end Loader Operator
2023-02-22 Respirable dust, <.1mg 0 Front-end Loader Operator
2023-02-22 Respirable dust, <.1mg 0 Mechanic
2021-11-03 Respirable dust, <.1mg 0 Mechanic
2021-11-03 Respirable dust, <.1mg 0 Front-end Loader Operator
2021-11-03 Quartz, respirable, >1% Qtz 0.17 Laborer, Bullgang
2021-11-03 Respirable dust, <.1mg 0 Laborer, Bullgang
2019-07-31 Respirable dust, <.1mg 0 Laborer, Bullgang
2019-07-31 Quartz, respirable, >1% Qtz 0.13 Laborer, Bullgang
2019-07-31 Quartz, respirable, >1% Qtz 0.14 Front-end Loader Operator
2019-07-31 Respirable dust, <.1mg 0 Front-end Loader Operator
2017-04-12 Respirable dust, <.1mg 0 Laborer, Bullgang
2016-11-30 Quartz, respirable, >1% Qtz 0.15 0.5 0.30 Crusher Oper/Worker
2016-11-30 Quartz, respirable, >1% Qtz 0.31 1.2 0.26 Front-end Loader Operator
2016-11-30 Quartz, respirable, >1% Qtz 0.24 0.79 0.30 Laborer, Bullgang
2016-11-30 Quartz, respirable, >1% Qtz 0.13 0.78 0.17 Front-end Loader Operator
2016-09-28 Quartz, respirable, >1% Qtz 0.14 0.58 0.24 Laborer, Bullgang
2016-09-28 Quartz, respirable, >1% Qtz 0.12 0.67 0.18 Dry Screen Plant Operator
2014-08-21 Respirable dust, <.1mg 0 Welder, etc.
2014-08-21 Quartz, respirable, >1% Qtz 0.18 0.73 0.25 Laborer, Bullgang
2014-08-21 Unlisted Particulate, respirable, <1% Qtz 0.25 Front-end Loader Operator
2010-02-10 Quartz, respirable, >1% Qtz 0.28 1.46 0.19 Laborer, Bullgang
2010-02-10 Respirable dust, <.1mg 0 Front-end Loader Operator
2010-02-10 Respirable dust, <.1mg 0 Laborer, Bullgang
2006-08-01 Unlisted Particulate, respirable, <1% Qtz 0.25 Dry Screen Plant Operator
2006-08-01 Quartz, respirable, >1% Qtz 0.22 0.97 0.23 Utility Man
2006-08-01 Respirable dust, <.1mg 0 Dry Screen Plant Operator
2006-08-01 Respirable dust, <.1mg 0 Front-end Loader Operator
2005-10-05 Quartz, respirable, >1% Qtz 0.29 1.27 0.23 Cleanup Man
2005-10-05 Quartz, respirable, >1% Qtz 0.61 2.27 0.27 Crusher Oper/Worker
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.

Penrose Ranch Gravel Pit recorded 0.00 reportable injury cases per 100 full-time workers in 2024.

Injury rate, 2024
ⓘ 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 1.77 and the all-US-mining average was 2.08 cases per 100 workers.
In Colorado, metal and nonmetal mining averaged 1.78 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
2024 * 0.00 0.00 0.000
2023 * 0.00 0.00 0.000
2022 * 0.00 0.00 0.000
2021 * 0.00 0.00 0.000
2020 * 0.00 0.00 0.000
2019 * 0.00 0.00 0.000
2018 * 0.00 0.00 0.000
2017 * 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. Rocky Mountain Materials & Asphalt Inc 1992 to 2016
  2. Martin Marietta Materials Inc. 2016 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2026 8
2025 9
2024 10
2023 12
2022 11
2021 11
2020 11
2019 10
2018 9
2017 10
2016 10
2015 10
2014 12
2013 11
2012 12
2011 13
2010 10
2009 11
2008 8
2007 6
2006 11
2005 13
2004 9
2003 4
2002 2
2001 3
2000 3
Source: MSHA quarterly employment and production, updated weekly.

Penrose Ranch Gravel Pit sits in Fremont County, Colorado, 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.
Fremont County, Colorado · Population 49,394
0.6%
Mining share of county employment
$61,027
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 4,516 4 0 885.7
2026 Q1 4,157 0 0 0.0
2025 Q4 3,461 2 0 577.9
2025 Q3 3,704 0 0 0.0
2025 Q2 5,798 0 0 0.0
2025 Q1 5,493 0 0 0.0
2024 Q4 5,354 0 0 0.0
2024 Q3 5,366 3 0 559.1
Show 98 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2024 Q2 5,752 0 0 0.0
2024 Q1 4,998 1 0 200.1
2023 Q4 6,256 0 0 0.0
2023 Q3 7,038 0 0 0.0
2023 Q2 8,163 0 0 0.0
2023 Q1 7,217 2 0 277.1
2022 Q4 5,782 0 0 0.0
2022 Q3 6,547 0 0 0.0
2022 Q2 6,027 0 0 0.0
2022 Q1 5,327 0 0 0.0
2021 Q4 6,194 3 0 484.3
2021 Q3 5,861 0 0 0.0
2021 Q2 5,638 1 0 177.4
2021 Q1 5,337 2 0 374.7
2020 Q4 5,527 0 0 0.0
2020 Q3 5,414 0 0 0.0
2020 Q2 6,586 5 0 759.2
2020 Q1 6,110 1 0 163.7
2019 Q4 6,363 0 0 0.0
2019 Q3 6,625 2 1 301.9
2019 Q2 6,647 0 0 0.0
2019 Q1 4,994 3 0 600.7
2018 Q4 5,073 0 0 0.0
2018 Q3 5,562 0 0 0.0
2018 Q2 6,056 2 0 330.3
2018 Q1 6,594 0 0 0.0
2017 Q4 6,086 0 0 0.0
2017 Q3 5,844 0 0 0.0
2017 Q2 6,376 1 1 156.8
2017 Q1 5,827 0 0 0.0
2016 Q4 5,326 2 0 375.5
2016 Q3 6,654 0 0 0.0
2016 Q2 6,014 3 0 498.8
2016 Q1 2,702 2 0 740.2
2015 Q4 6,565 0 0 0.0
2015 Q3 6,032 0 0 0.0
2015 Q2 6,073 17 7 2799.3
2015 Q1 5,249 0 0 0.0
2014 Q4 5,625 1 1 177.8
2014 Q3 6,617 4 1 604.5
2014 Q2 6,305 0 0 0.0
2014 Q1 5,976 14 2 2342.7
2013 Q4 5,112 0 0 0.0
2013 Q3 6,195 0 0 0.0
2013 Q2 5,899 2 0 339.0
2013 Q1 5,081 3 1 590.4
2012 Q4 5,100 0 0 0.0
2012 Q3 5,018 0 0 0.0
2012 Q2 8,361 1 0 119.6
2012 Q1 8,730 1 0 114.5
2011 Q4 7,495 0 0 0.0
2011 Q3 9,560 2 1 209.2
2011 Q2 7,809 0 0 0.0
2011 Q1 6,531 0 0 0.0
2010 Q4 7,101 4 2 563.3
2010 Q3 8,356 0 0 0.0
2010 Q2 4,236 4 0 944.3
2010 Q1 3,327 8 3 2404.6
2009 Q4 5,401 0 0 0.0
2009 Q3 6,114 0 0 0.0
2009 Q2 7,726 2 0 258.9
2009 Q1 3,069 0 0 0.0
2008 Q4 2,517 0 0 0.0
2008 Q3 5,389 0 0 0.0
2008 Q2 6,858 1 0 145.8
2008 Q1 1,056 2 0 1893.9
2007 Q4 2,820 0 0 0.0
2007 Q3 1,740 0 0 0.0
2007 Q2 3,581 0 0 0.0
2007 Q1 3,553 0 0 0.0
2006 Q4 4,710 0 0 0.0
2006 Q3 7,679 5 1 651.1
2006 Q2 7,137 0 0 0.0
2006 Q1 6,338 0 0 0.0
2005 Q4 6,725 0 0 0.0
2005 Q3 9,379 0 0 0.0
2005 Q2 8,972 0 0 0.0
2005 Q1 7,213 0 0 0.0
2004 Q4 8,186 0 0 0.0
2004 Q3 8,860 10 2 1128.7
2004 Q2 5,285 0 0 0.0
2004 Q1 4,967 0 0 0.0
2003 Q4 3,806 0 0 0.0
2003 Q3 2,272 4 2 1760.6
2003 Q2 2,030 0 0 0.0
2003 Q1 1,156 0 0 0.0
2002 Q4 1,378 0 0 0.0
2002 Q3 1,441 0 0 0.0
2002 Q2 1,397 0 0 0.0
2002 Q1 889 0 0 0.0
2001 Q4 1,204 0 0 0.0
2001 Q3 1,333 1 0 750.2
2001 Q2 1,344 0 0 0.0
2001 Q1 2,057 0 0 0.0
2000 Q4 962 0 0 0.0
2000 Q3 1,251 0 0 0.0
2000 Q2 1,396 0 0 0.0
2000 Q1 733 1 0 1364.3
No fatalities recorded at this mine.

Reportable incidents

5 on file

2016 · 1 incident

November 15, 2016 CO · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator STEPPING OR KNEELING ON OBJECT
Martin Marietta Materials Inc. · Struck against stationary object

Employee was climbing up the ladder on the loader on the pit floor when ee felt a slight pull in the back area on the right leg just above the knee. Employee then climbed down and notified supervisor about the incident that had just happened.

1997 · 1 incident

May 5, 1997 CO · Metal/Non-Metal belt foreman, maintenance foreman, maintenance supervisor STEPPING OR KNEELING ON OBJECT
Rocky Mountain Materials & Asphalt Inc · Struck against stationary object

EMPLOYEE STEPPED ON A SMALL PIECE OF WOOD WITH 3 NAILS IN IT. EMPLOYEE SUSTAINED 3 PUNCTURE WOUNDS IN THE BALL OF RIGHT FOOT. EMPLOYEE CLEANED AND APPLIED ANTISEPTIC TO WOUND HIMSELF AND FELT IT WAS OK. EMPLOYEES WOUND BECAME INFECTED 5-6 DAYS LATER AND HAD TO SEEK TREATMENT ON 5-12-97. EMPLOYEE WAS TREATED FOR INFECTED WOUND AND TREATED WITH ANTIBIOTICS.

1996 · 1 incident

March 5, 1996 CO · Metal/Non-Metal scalper-screen operator SLIP OR FALL OF PERSON
Rocky Mountain Materials & Asphalt Inc · Fall from ladders

EE WAS CLIMBING A FIXED LADDER ON A SCREEN DECK TO SHOVEL OFF WALKWAY. EE TRIED TO CLIMB LADDER WITH SHOVEL IN HIS HAND AND MISSED A HAND HOLD AS HE WAS CLIMBING AND FELL OFF LADDER APPROX 10' TO GROUND. THE TOP OF THE LADDER IS APPROX 13FTOFF GROUND.EE BROKE ANKLE WHEN HE LANDED ON GROUND.

1995 · 2 incidents

June 20, 1995 CO · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDLING OF MATERIALS
Rocky Mountain Materials & Asphalt Inc · Over-exertion in lifting objects

ON 6-20-95 EMPLOYEE WAS OBSERVED BY FORMAN WALKING GINGERLY LIKE HIS BACK WAS SORE. FOREMAN ASKED EE WHAT WAS WRONG, EMPLOYEE SAID HIS BACK WAS SORE FROM SLEEPING ON A COUCH. FOREMAN TOLD EE N OT TO DO ANYTHING TO AGGRAVATE HIS CONDITION ANDNOT TO COME IN NEXT DAY IF IT WAS NOT BETTER. EMPLOYEE STAYED HOME 6-21-95. 6-22-95 EMPLOYEE CONTACTED ME AND STATED HE HURT HIS BACK SHOVELING