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Arenero Comerio: 48 MSHA citations Metal/Non-Metal

Gravero Rodriguez · Surface
Controlled by Hector Rodriguez
Comerio, Guayama County, PR  ·  Abandoned
MSHA Mine ID: 5400397

Arenero Comerio has $15K in proposed MSHA penalties and $2K outstanding across 0 contested dockets, plus health sampling and the full incident record.

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Fatalities
0
Total incidents
1
Years on record
2025
Latest incident
Apr 2025
Compliance record
MSHA citations since 2000
48
citations
21
significant & substantial
$15,243
proposed penalties
$13,065
paid to date
86% of proposed penalties paid to date, a $2,178 gap.
Source: MSHA violations data, updated weekly.
See Gravero Rodriguez's full MSHA compliance history →
Inspection activity
MSHA inspections since 2000
32
inspections on record
334
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: 334 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.

Arenero Comerio has $15K in proposed MSHA penalties and $2K 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.
$15K
proposed penalties
$15K
current assessed
$13K
paid to date
$2K
outstanding
43 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2025-10-21.
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.
44.7%
significant & substantial
38.3%
high negligence or reckless
44.7%
reasonably likely or greater
74.5%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 0.0% low, 61.7% moderate, 38.3% 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: 2025-10-23
0%
of limit-tested samples over the exposure limit
8
samples
4
limit-tested
Most sampled contaminants
  • Nuisance dust, total, <1% Qtz4
  • Respirable dust, <.1mg4
Show the individual readings (8)
Date Contaminant Concentration Limit Conc / limit Occupation
2025-10-23 Respirable dust, <.1mg 0 Front-end Loader Operator
2025-10-23 Respirable dust, <.1mg 0 Backhoe Operator
2025-04-03 Nuisance dust, total, <1% Qtz 0 10 0.00 Front-end Loader Operator
2025-04-03 Nuisance dust, total, <1% Qtz 0 10 0.00 Backhoe Operator
2024-10-24 Respirable dust, <.1mg 0 Truck Driver
2024-10-24 Respirable dust, <.1mg 0 Cont. Miner Operator
2023-11-28 Nuisance dust, total, <1% Qtz 0.24 10 0.02 Truck Driver
2023-11-28 Nuisance dust, total, <1% Qtz 0 10 0.00 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.
Ownership history
  1. Venta Arenas Inc 1997 to 2000
  2. Venta Arena Inc 2000 to 2020
  3. Comerio Sand and Gravel Corp 2020 to 2025
  4. CONTRERAS LAND DEVELOPERS & CONTRACTORS 2025 to 2026
  5. Gravero Rodriguez 2026 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2026 5
2025 7
2024 8
2023 9
2021 1
2020 3
2000 10
Source: MSHA quarterly employment and production, updated weekly.

Arenero Comerio sits in Guayama Municipio, Puerto Rico, where the Census mining category is 0.5% 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.
Guayama Municipio, Puerto Rico · Population 35,845
0.5%
Mining share of county employment
$20,273
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 2,424 0 0 0.0
2025 Q4 3,144 8 2 2544.5
2025 Q3 3,156 0 0 0.0
2025 Q2 3,214 4 2 1244.6
2025 Q1 3,253 0 0 0.0
2024 Q4 3,233 8 6 2474.5
2024 Q3 2,835 0 0 0.0
2024 Q2 3,380 14 4 4142.0
Show 8 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2024 Q1 3,823 0 0 0.0
2023 Q4 4,180 3 2 717.7
2023 Q3 3,178 0 0 0.0
2021 Q2 24 0 0 0.0
2021 Q1 24 0 0 0.0
2020 Q4 534 0 0 0.0
2000 Q4 5,280 5 1 947.0
2000 Q3 3,408 0 0 0.0
No fatalities recorded at this mine.

Reportable incidents

1 on file

2025 · 1 incident

April 2, 2025 PR · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver SLIP OR FALL OF PERSON
Comerio Sand and Gravel Corp · Fall from machine

EMPLEADO INFORMA QUE ESTABA CERRANDO EL BONETE DEL BUGGY, RESBALO Y SE CAYO. CAYO DEL LADO DERECHO DE SU CUERPO PRESENTANDO DOLORES FUERTES EN EL AREA DEL COSTADO. EMPLOYEE REPORTS WAS CLOSING THE BUGGY'S BONNET, SLIPPED AND FELL. EMPLOYEE FELL ON THE RIGHT SIDE OF BODY PRESENTING STRONG PAIN IN THE SIDE AREA.