Cantera Puerto Ven: 170 MSHA citations Metal/Non-Metal
Cantera Puerto Ven, Inc
· Surface
Controlled by
Anillo Alberti-Pruventud; Gian M Alberti-Pruventud
MSHA Mine ID: 5400455
Cantera Puerto Ven has $88K in proposed MSHA penalties and $48K outstanding across 0 contested dockets, plus health sampling and the full incident record.
Watch this mine
Email me when a new MSHA incident is filed at Cantera Puerto Ven.
- Fatalities
- 0
- Total incidents
- 0
- Years on record
- —
- Latest incident
- —
Compliance record
MSHA citations since 2004
170
citations
51
significant & substantial
$88,454
proposed penalties
$40,785
paid to date
46% of proposed penalties paid to date, a $47,669 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2004
151
inspections on record
1,105
inspection hours
15.4
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.170 citations across 1,105 inspection hours.
Source: MSHA inspections data, updated weekly.
Cantera Puerto Ven has $88K in proposed MSHA penalties and $48K 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.$88K
proposed penalties
$88K
current assessed
$41K
paid to date
$48K
outstanding
165 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2026-02-03.
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.30.7%
significant & substantial
27.7%
high negligence or reckless
30.7%
reasonably likely or greater
75.9%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 1.8% low, 70.5% moderate, 27.7% 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: 2026-02-03
ⓘ
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.0%
of limit-tested samples over the exposure limit
9
samples
3
limit-tested
Most sampled contaminants
- Respirable dust, <.1mg5
- Nuisance dust, total, <1% Qtz2
- Nuisance dust, respirable, <1% Qtz1
- Quartz, respirable, >1% Qtz1
Show the individual readings (9)
| Date | Contaminant | Concentration | Limit | Conc / limit | Occupation |
|---|---|---|---|---|---|
| 2026-02-03 | Respirable dust, <.1mg | 0 | Backhoe Operator | ||
| 2025-08-26 | Quartz, respirable, >1% Qtz | 0.12 | Backhoe Operator | ||
| 2025-08-26 | Respirable dust, <.1mg | 0 | Backhoe Operator | ||
| 2024-07-25 | Nuisance dust, total, <1% Qtz | 0.28 | 10 | 0.03 | Mechanic |
| 2024-07-25 | Nuisance dust, total, <1% Qtz | 0.52 | 10 | 0.05 | Laborer, Bullgang |
| 2009-06-18 | Respirable dust, <.1mg | 0.06 | Front-end Loader Operator | ||
| 2009-06-18 | Respirable dust, <.1mg | 0.07 | Backhoe Operator | ||
| 2004-04-20 | Respirable dust, <.1mg | 0 | Cleanup Man | ||
| 2004-04-20 | Nuisance dust, respirable, <1% Qtz | 0.25 | 10 | 0.03 | 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.
Cantera Puerto Ven recorded 0.00 reportable injury cases per 100 full-time workers in 2009.
Injury rate, 2009
ⓘ
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 2.82 and the all-US-mining average was 3.36 cases per 100 workers.
In Puerto Rico, metal and nonmetal mining averaged 3.46 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 |
|---|---|---|---|
| 2009 * | 0.00 | 0.00 | 0.000 |
| 2008 * | 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
- Puerto Ven Quarry, Inc. 2004 to 2005
- Cantera Gabriela Inc 2005 to 2015
- Cantera Real Anon LLC 2015 to 2017
- Cantera Puerto Ven, Inc 2017 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
| Year | Employees |
|---|---|
| 2026 | 4 |
| 2025 | 4 |
| 2024 | 6 |
| 2023 | 4 |
| 2022 | 4 |
| 2021 | 4 |
| 2020 | 4 |
| 2019 | 3 |
| 2018 | 3 |
| 2017 | 2 |
| 2016 | 3 |
| 2010 | 7 |
| 2009 | 13 |
| 2008 | 14 |
| 2007 | 9 |
| 2006 | 8 |
| 2005 | 7 |
| 2004 | 6 |
Source: MSHA quarterly employment and production, updated weekly.
Cantera Puerto Ven 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 Q1 | 1,560 | 2 | 0 | 1282.1 |
| 2025 Q4 | 1,800 | 0 | 0 | 0.0 |
| 2025 Q3 | 1,800 | 2 | 0 | 1111.1 |
| 2025 Q2 | 1,800 | 0 | 0 | 0.0 |
| 2025 Q1 | 2,241 | 2 | 0 | 892.5 |
| 2024 Q4 | 3,562 | 0 | 0 | 0.0 |
| 2024 Q3 | 2,669 | 4 | 2 | 1498.7 |
| 2024 Q1 | 1,662 | 2 | 0 | 1203.4 |
Show 53 earlier quarters Hide earlier quarters
| Quarter | Hours worked | Citations | S&S | Per 1M hrs |
|---|---|---|---|---|
| 2023 Q4 | 1,662 | 0 | 0 | 0.0 |
| 2023 Q3 | 1,422 | 6 | 0 | 4219.4 |
| 2023 Q2 | 1,772 | 1 | 0 | 564.3 |
| 2023 Q1 | 1,802 | 4 | 0 | 2219.8 |
| 2022 Q4 | 1,802 | 0 | 0 | 0.0 |
| 2022 Q3 | 1,802 | 2 | 0 | 1109.9 |
| 2022 Q2 | 1,787 | 0 | 0 | 0.0 |
| 2022 Q1 | 1,802 | 3 | 0 | 1664.8 |
| 2021 Q4 | 1,869 | 0 | 0 | 0.0 |
| 2021 Q3 | 1,839 | 0 | 0 | 0.0 |
| 2021 Q2 | 1,321 | 11 | 3 | 8327.0 |
| 2021 Q1 | 1,940 | 0 | 0 | 0.0 |
| 2020 Q4 | 1,749 | 4 | 1 | 2287.0 |
| 2020 Q3 | 1,800 | 2 | 1 | 1111.1 |
| 2020 Q2 | 1,642 | 0 | 0 | 0.0 |
| 2020 Q1 | 1,466 | 2 | 0 | 1364.3 |
| 2019 Q4 | 1,280 | 0 | 0 | 0.0 |
| 2019 Q3 | 1,279 | 14 | 1 | 10946.1 |
| 2019 Q2 | 1,279 | 0 | 0 | 0.0 |
| 2019 Q1 | 1,222 | 6 | 1 | 4910.0 |
| 2018 Q4 | 1,222 | 0 | 0 | 0.0 |
| 2018 Q3 | 1,265 | 0 | 0 | 0.0 |
| 2018 Q2 | 1,488 | 12 | 2 | 8064.5 |
| 2018 Q1 | 1,377 | 0 | 0 | 0.0 |
| 2017 Q4 | 924 | 8 | 3 | 8658.0 |
| 2017 Q3 | 0 | 0 | 0 | |
| 2017 Q2 | 200 | 1 | 1 | 5000.0 |
| 2017 Q1 | 536 | 0 | 0 | 0.0 |
| 2016 Q4 | 576 | 0 | 0 | 0.0 |
| 2016 Q3 | 246 | 0 | 0 | 0.0 |
| 2016 Q2 | 240 | 0 | 0 | 0.0 |
| 2016 Q1 | 720 | 2 | 1 | 2777.8 |
| 2010 Q1 | 2,184 | 6 | 2 | 2747.3 |
| 2009 Q4 | 5,040 | 0 | 0 | 0.0 |
| 2009 Q3 | 6,760 | 0 | 0 | 0.0 |
| 2009 Q2 | 7,644 | 4 | 1 | 523.3 |
| 2009 Q1 | 7,080 | 2 | 0 | 282.5 |
| 2008 Q4 | 7,492 | 0 | 0 | 0.0 |
| 2008 Q3 | 7,800 | 17 | 5 | 2179.5 |
| 2008 Q2 | 6,300 | 0 | 0 | 0.0 |
| 2008 Q1 | 4,890 | 8 | 3 | 1636.0 |
| 2007 Q4 | 3,980 | 0 | 0 | 0.0 |
| 2007 Q3 | 4,280 | 0 | 0 | 0.0 |
| 2007 Q2 | 4,480 | 13 | 13 | 2901.8 |
| 2007 Q1 | 3,990 | 5 | 3 | 1253.1 |
| 2006 Q4 | 3,915 | 0 | 0 | 0.0 |
| 2006 Q3 | 3,840 | 0 | 0 | 0.0 |
| 2006 Q2 | 3,790 | 7 | 2 | 1847.0 |
| 2006 Q1 | 2,740 | 1 | 0 | 365.0 |
| 2005 Q4 | 3,000 | 0 | 0 | 0.0 |
| 2005 Q3 | 3,105 | 2 | 0 | 644.1 |
| 2005 Q2 | 3,360 | 0 | 0 | 0.0 |
| 2004 Q2 | 2,958 | 10 | 5 | 3380.7 |
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.