Mining Incidents

GRAVERO COTO LAUREL: 99 MSHA citations Metal/Non-Metal

Robles Aggregates Inc · Surface
Ponce, Ponce County, PR  ·  Active
MSHA Mine ID: 5400057

GRAVERO COTO LAUREL has $56K in proposed MSHA penalties and $302 outstanding across 6 contested dockets, plus health sampling and the full incident record.

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Fatalities
0
Total incidents
11
Years on record
1983–1996
Latest incident
Feb 1996
Compliance record
MSHA citations since 2000
99
citations
43
significant & substantial
$56,457
proposed penalties
$40,213
paid to date
71% of proposed penalties paid to date, a $16,244 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2000
112
inspections on record
981
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: 981 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.

GRAVERO COTO LAUREL has $56K in proposed MSHA penalties and $302 outstanding across 6 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.
$56K
proposed penalties
$41K
current assessed
$40K
paid to date
$302
outstanding
96 assessments are final orders; 6 contested dockets.
Of $44K in penalties contested before the Commission, $28K was upheld in final decisions.
As of the most recent assessment on 2026-06-25.
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.
44.3%
significant & substantial
35.1%
high negligence or reckless
43.3%
reasonably likely or greater
77.3%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 2.1% low, 62.9% moderate, 35.1% 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.
14 citations taken to the federal commission · 14% of citations on record
  • Settled 12 · 86%
  • Stood as issued 2 · 14%
91%
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 11 decided S&S contests · industry: 79%
37%
Penalty reduction in decided contests
$44K proposed, $28K 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 2014-11-18.
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
SE 2015-0072 Settlement Lesnick 2015 $18K → $8K
SE 2010-119M Settlement Lesnick 2013 $13K → $10K
SE 2012-313M Settlement Miller 2013 $8K → $6K
SE 2012-692M Settlement Miller 2013 $2K → $2K
SE 2014-0340 Settlement Bulluck 2015 $2K → $1K
SE 2010-476M Default Lesnick 2011 $702 → $702
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: 2024-04-25
0%
of limit-tested samples over the exposure limit
8
samples
2
limit-tested
Most sampled contaminants
  • Respirable dust, <.1mg4
  • Nuisance dust, total, <1% Qtz2
  • Quartz, respirable, >1% Qtz2
Show the individual readings (8)
Date Contaminant Concentration Limit Conc / limit Occupation
2024-04-25 Nuisance dust, total, <1% Qtz 0.34 10 0.03 Crusher Oper/Worker
2024-04-25 Nuisance dust, total, <1% Qtz 1.85 10 0.19 Cleanup Man
2022-05-17 Quartz, respirable, >1% Qtz 0.12 Crusher Oper/Worker
2022-05-17 Respirable dust, <.1mg 0 Front-end Loader Operator
2020-01-16 Respirable dust, <.1mg 0 Supervisor, Co. Official
2020-01-16 Quartz, respirable, >1% Qtz 0.15 Crusher Oper/Worker
2009-12-16 Respirable dust, <.1mg 0 Front-end Loader Operator
2002-04-10 Respirable dust, <.1mg 0 Cleanup Man
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.

GRAVERO COTO LAUREL recorded 0.00 reportable injury cases per 100 full-time workers in 2000.

Injury rate, 2000
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 4.77 and the all-US-mining average was 5.64 cases per 100 workers.
In Puerto Rico, metal and nonmetal mining averaged 4.86 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.
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. Inabon Aggregates Inc 1950 to 1997
  2. Robles Aggregates Inc 1997 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2026 5
2025 6
2024 7
2023 7
2022 6
2021 6
2020 6
2019 7
2018 5
2017 5
2016 5
2015 6
2014 8
2013 8
2012 8
2011 9
2010 9
2009 7
2008 7
2007 8
2006 7
2005 6
2004 7
2003 7
2002 7
2001 8
2000 10
Source: MSHA quarterly employment and production, updated weekly.

GRAVERO COTO LAUREL sits in Ponce Municipio, Puerto Rico, where the Census mining category is 0.0% 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.
Ponce Municipio, Puerto Rico · Population 134,676
0.0%
Mining share of county employment
$18,827
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 2,035 2 0 982.8
2026 Q1 2,033 0 0 0.0
2025 Q4 2,050 0 0 0.0
2025 Q3 2,421 0 0 0.0
2025 Q2 2,830 2 0 706.7
2025 Q1 2,520 0 0 0.0
2024 Q4 2,962 0 0 0.0
2024 Q3 2,849 0 0 0.0
Show 98 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2024 Q2 3,027 0 0 0.0
2024 Q1 2,841 2 0 704.0
2023 Q4 2,768 0 0 0.0
2023 Q3 2,566 0 0 0.0
2023 Q2 2,224 2 0 899.3
2023 Q1 2,034 0 0 0.0
2022 Q4 2,319 0 0 0.0
2022 Q3 2,141 0 0 0.0
2022 Q2 2,452 1 0 407.8
2022 Q1 2,319 0 0 0.0
2021 Q4 2,474 2 1 808.4
2021 Q3 2,498 0 0 0.0
2021 Q2 2,519 3 0 1190.9
2021 Q1 2,516 4 0 1589.8
2020 Q4 2,525 0 0 0.0
2020 Q3 2,071 0 0 0.0
2020 Q2 1,932 1 0 517.6
2020 Q1 1,969 3 1 1523.6
2019 Q4 2,527 0 0 0.0
2019 Q3 1,741 0 0 0.0
2019 Q2 2,213 0 0 0.0
2019 Q1 2,658 2 1 752.4
2018 Q4 2,134 0 0 0.0
2018 Q3 1,761 0 0 0.0
2018 Q2 1,601 1 0 624.6
2018 Q1 985 0 0 0.0
2017 Q4 985 0 0 0.0
2017 Q3 1,200 0 0 0.0
2017 Q2 1,760 0 0 0.0
2017 Q1 1,969 0 0 0.0
2016 Q4 2,287 0 0 0.0
2016 Q3 1,928 0 0 0.0
2016 Q2 1,681 0 0 0.0
2016 Q1 1,862 0 0 0.0
2015 Q4 1,596 0 0 0.0
2015 Q3 1,740 0 0 0.0
2015 Q2 3,853 1 1 259.5
2015 Q1 3,104 0 0 0.0
2014 Q4 3,255 1 0 307.2
2014 Q3 3,532 3 0 849.4
2014 Q2 3,700 0 0 0.0
2014 Q1 3,716 1 1 269.1
2013 Q4 3,679 0 0 0.0
2013 Q3 3,402 0 0 0.0
2013 Q2 4,148 1 0 241.1
2013 Q1 3,943 0 0 0.0
2012 Q4 3,190 2 1 627.0
2012 Q3 4,490 0 0 0.0
2012 Q2 4,230 0 0 0.0
2012 Q1 3,889 1 0 257.1
2011 Q4 4,956 7 5 1412.4
2011 Q3 4,517 0 0 0.0
2011 Q2 4,236 6 2 1416.4
2011 Q1 4,048 0 0 0.0
2010 Q4 4,261 3 0 704.1
2010 Q3 5,059 0 0 0.0
2010 Q2 4,620 0 0 0.0
2010 Q1 3,920 0 0 0.0
2009 Q4 2,387 2 1 837.9
2009 Q3 3,320 12 6 3614.5
2009 Q2 3,320 0 0 0.0
2009 Q1 3,120 4 1 1282.1
2008 Q4 2,860 0 0 0.0
2008 Q3 2,750 0 0 0.0
2008 Q2 2,920 4 3 1369.9
2008 Q1 3,160 0 0 0.0
2007 Q4 3,475 1 0 287.8
2007 Q3 3,850 0 0 0.0
2007 Q2 3,690 1 0 271.0
2007 Q1 3,510 0 0 0.0
2006 Q4 3,420 0 0 0.0
2006 Q3 2,620 3 3 1145.0
2006 Q2 2,660 0 0 0.0
2006 Q1 2,620 0 0 0.0
2005 Q4 2,600 0 0 0.0
2005 Q3 2,700 0 0 0.0
2005 Q2 2,630 0 0 0.0
2005 Q1 2,590 4 3 1544.4
2004 Q4 3,470 0 0 0.0
2004 Q3 3,170 0 0 0.0
2004 Q2 3,405 1 0 293.7
2004 Q1 3,225 0 0 0.0
2003 Q4 3,400 1 1 294.1
2003 Q3 3,125 0 0 0.0
2003 Q2 3,063 4 3 1305.9
2003 Q1 3,200 0 0 0.0
2002 Q4 3,225 3 3 930.2
2002 Q3 3,000 0 0 0.0
2002 Q2 3,175 0 0 0.0
2002 Q1 3,550 0 0 0.0
2001 Q4 3,425 3 2 875.9
2001 Q3 3,120 0 0 0.0
2001 Q2 3,620 1 0 276.2
2001 Q1 5,690 1 1 175.7
2000 Q4 5,780 0 0 0.0
2000 Q3 6,433 1 1 155.4
2000 Q2 6,643 2 2 301.1
2000 Q1 4,190 0 0 0.0
No fatalities recorded at this mine.

Reportable incidents

11 on file

1996 · 1 incident

February 23, 1996 PR · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator HANDTOOLS (NONPOWERED)
Inabon Aggregates Inc · Caught in, under or between a moving and a stationary object

WHILE HOLDING A CHAIN WITH A LOADER TRASMITION THE TRASMITION PART SWING AND PINCH HIS LEFT HAND FINGER WITH A WALL CUTTING HIS FINGER.

1995 · 1 incident

March 23, 1995 PR · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech SLIP OR FALL OF PERSON
Inabon Aggregates Inc · Fall from machine

WHILE REPAIR CONVEYOR BELT THE EMPLOYEE SLIP ANDFRACTURE HIS RIGHT SIDE OF HIS PELVIS.

1994 · 1 incident

October 12, 1994 PR · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator SLIP OR FALL OF PERSON
Inabon Aggregates Inc · Struck against stationary object

WHILE OPERATOR WAS GET OFF THE FRONT END LOADER HE SLIPPERY AND HIT THE STAIR OF THE LOADER WITHLEFT KNEE CAUSE SWOLLEN.

1993 · 1 incident

July 27, 1993 PR · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech MACHINERY
Inabon Aggregates Inc · Contact with hot objects or substances

WHILE EMPLOYEE CUTTING METAL WITH ACETILENE A PIECE OF METAL GET TROUGH THE SAFETY SHOES AND PRODUCE A BURN. IN HIS LEFT FOOT.

1990 · 2 incidents

December 28, 1990 PR · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech MACHINERY
Inabon Aggregates Inc · Struck by... (Not Elsewhere Classified)

SET ELECT POLISHER ON TABLE IT FELL LACE R KNEE

April 5, 1990 PR · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDLING OF MATERIALS
Inabon Aggregates Inc · Over-exertion (Not Elsewhere Classified)

MOVING PC OF CONVEY, ROLLER FELT LOWER BACK PAIN

1988 · 2 incidents

October 12, 1988 PR · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman SLIP OR FALL OF PERSON
Inabon Aggregates Inc · Over-exertion in pulling or pushing objects

WHILE EMPLOYEE WAS PULL OUT THE NET FLOAT OUT OF THE PLANT WATER POUND HE SLIDE AND HE SUFFER PAIN ON HIS RIGHT KNEE.

May 2, 1988 PR · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDTOOLS (NONPOWERED)
Inabon Aggregates Inc · Struck by... (Not Elsewhere Classified)

QHILW WMPLOYWW QA XLWNINF RHW PLNR QIRH PEWAAUEW QRWE HOAW HW LIS IR SOQN DOE MOMWNR XUAINF RHWHILE EMPLOYEE WAS CLEANING PLANT WITH A PRESSURE WATER HOSE HE LAID IT DOWN FOR A MOMENT CAUSI NG HOSE SWIVEL FREELY STRIKING EMPLOYEE FACE WITH LACERATION NEXT TO THE EYE

1986 · 1 incident

October 23, 1986 PR · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator HANDLING OF MATERIALS
Inabon Aggregates Inc · Struck against stationary object

WHILE DISMOUNTI3G THE LOADER TO DRINK WATER HE HIT THE LADDER OF LOADER WITH HIS CHEST ON THE LEFT SIDE

1985 · 1 incident

November 19, 1985 PR · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
Inabon Aggregates Inc · Struck by falling object

WHILE CHANGING SCREENS WITH A BAR THE BAR SLIPPED CAUSED THE SCREEN TO FALL AND THE EMPLOYEES LEFT HAND LITTLE FINGER WAS CUT

1983 · 1 incident

February 23, 1983 PR · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman SLIP OR FALL OF PERSON
Inabon Aggregates Inc · Over-exertion (Not Elsewhere Classified)

THE MAN WAS CARRYING MATERIALS TO REPAIR PLANT AND HE MADE A FALSE STEP AND HURT HIS LEFT FOOT.