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CANTERA ROCA DURA INC: 163 MSHA citations Metal/Non-Metal

Controlled by Antonio E Medina
Manati, Manati County, PR  ·  Active
MSHA Mine ID: 5400404

CANTERA ROCA DURA INC has $36K 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
4
Years on record
1998–2000
Latest incident
Apr 2000
Compliance record
MSHA citations since 2000
163
citations
48
significant & substantial
$36,231
proposed penalties
$26,096
paid to date
72% of proposed penalties paid to date, a $10,135 gap.
Source: MSHA violations data, updated weekly.
See CANTERA ROCA DURA LLC's full MSHA compliance history →
Inspection activity
MSHA inspections since 2000
118
inspections on record
989
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: 989 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.

CANTERA ROCA DURA INC has $36K 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.
$36K
proposed penalties
$36K
current assessed
$26K
paid to date
$10K
outstanding
131 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2024-10-16.
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.
30.4%
significant & substantial
24.1%
high negligence or reckless
30.4%
reasonably likely or greater
82.3%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 9.5% low, 66.5% moderate, 24.1% 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: 2023-04-20, 3 years ago
0%
of limit-tested samples over the exposure limit
7
samples
6
limit-tested
Most sampled contaminants
  • Nuisance dust, respirable, <1% Qtz3
  • Nuisance dust, total, <1% Qtz3
  • Unlisted Particulate, respirable, <1% Qtz1
Show the individual readings (7)
Date Contaminant Concentration Limit Conc / limit Occupation
2023-04-20 Nuisance dust, total, <1% Qtz 5.55 10 0.56 Crusher Oper/Worker
2023-04-20 Nuisance dust, respirable, <1% Qtz 0.17 10 0.02 Cleanup Man
2020-12-29 Nuisance dust, respirable, <1% Qtz 0.6 10 0.06 Laborer, Bullgang
2020-12-29 Nuisance dust, total, <1% Qtz 4.29 10 0.43 Backhoe Operator
2020-12-29 Nuisance dust, total, <1% Qtz 4.84 10 0.48 Laborer, Bullgang
2020-12-29 Nuisance dust, respirable, <1% Qtz 0.47 10 0.05 Laborer, Bullgang
2009-01-22 Unlisted Particulate, respirable, <1% Qtz 1.11 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.
Ownership history
  1. Rocadura Inc 1997 to 1998
  2. Roca Dura Inc 1998 to 2008
  3. Cantera Roca Dura Inc 2008 to 2020
  4. Cantera Roca Dura Planta #1 Corp 2011 to 2016
  5. Cantera Roca Dura LLC 2020 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2026 8
2025 7
2024 7
2023 4
2022 5
2021 5
2020 5
2019 4
2018 4
2017 5
2016 4
2013 9
2012 9
2011 8
2010 8
2009 10
2008 13
2001 0
2000 6
Source: MSHA quarterly employment and production, updated weekly.

CANTERA ROCA DURA INC sits in Manatí 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.
Manatí Municipio, Puerto Rico · Population 39,152
0.0%
Mining share of county employment
$20,352
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 4,396 0 0 0.0
2026 Q1 3,047 0 0 0.0
2025 Q4 3,087 0 0 0.0
2025 Q3 2,926 0 0 0.0
2025 Q2 4,048 0 0 0.0
2025 Q1 4,305 0 0 0.0
2024 Q4 4,321 1 0 231.4
2024 Q3 3,624 0 0 0.0
Show 61 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2024 Q2 2,887 7 1 2424.7
2024 Q1 1,760 0 0 0.0
2023 Q4 1,440 2 0 1388.9
2023 Q3 1,440 0 0 0.0
2023 Q2 1,440 5 1 3472.2
2023 Q1 1,760 0 0 0.0
2022 Q4 1,440 4 1 2777.8
2022 Q3 1,440 0 0 0.0
2022 Q2 1,600 5 1 3125.0
2022 Q1 1,760 3 1 1704.5
2021 Q4 2,400 0 0 0.0
2021 Q3 2,240 0 0 0.0
2021 Q2 1,600 3 1 1875.0
2021 Q1 2,504 0 0 0.0
2020 Q4 2,400 8 2 3333.3
2020 Q3 1,600 2 1 1250.0
2020 Q2 1,600 0 0 0.0
2020 Q1 2,400 0 0 0.0
2019 Q4 2,504 4 0 1597.4
2019 Q3 1,920 0 0 0.0
2019 Q2 1,200 8 2 6666.7
2019 Q1 1,440 0 0 0.0
2018 Q4 1,200 6 1 5000.0
2018 Q3 1,200 0 0 0.0
2018 Q2 2,160 3 1 1388.9
2018 Q1 1,920 1 0 520.8
2017 Q4 655 5 2 7633.6
2017 Q3 1,540 1 1 649.4
2017 Q2 1,492 2 0 1340.5
2017 Q1 1,056 0 0 0.0
2016 Q4 864 3 0 3472.2
2016 Q3 910 0 0 0.0
2016 Q2 872 15 6 17201.8
2016 Q1 2,539 0 0 0.0
2013 Q4 4,080 4 1 980.4
2013 Q3 4,080 0 0 0.0
2013 Q2 3,293 5 1 1518.4
2013 Q1 3,183 0 0 0.0
2012 Q4 3,812 10 5 2623.3
2012 Q3 3,805 0 0 0.0
2012 Q2 4,221 9 2 2132.2
2012 Q1 4,098 1 1 244.0
2011 Q4 4,624 6 2 1297.6
2011 Q3 3,252 0 0 0.0
2011 Q2 3,290 5 1 1519.8
2011 Q1 3,248 0 0 0.0
2010 Q4 3,192 2 0 626.6
2010 Q3 3,550 0 0 0.0
2010 Q2 3,920 4 1 1020.4
2009 Q4 3,920 0 0 0.0
2009 Q3 4,240 0 0 0.0
2009 Q2 4,240 3 2 707.5
2009 Q1 5,424 5 2 921.8
2008 Q4 5,440 1 1 183.8
2008 Q3 5,440 10 4 1838.2
2008 Q2 5,760 0 0 0.0
2001 Q1 0 0 0
2000 Q4 1,128 0 0 0.0
2000 Q3 3,174 1 1 315.1
2000 Q2 3,490 0 0 0.0
2000 Q1 3,467 0 0 0.0
No fatalities recorded at this mine.

Reportable incidents

4 on file

2000 · 1 incident

April 10, 2000 PR · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer SLIP OR FALL OF PERSON
Roca Dura Inc · Fall from machine

EE SUFFERED A FALL ASCENDING MACHINE.

1999 · 2 incidents

May 5, 1999 PR · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer MACHINERY
Roca Dura Inc · Struck against a moving object

THE ROUGH MOVEMENT OF THE MACHINE CAUSED THE EMPLOYEE TO FEEL A PAIN IN HIS BACK AND CHEST.

March 9, 1999 PR · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer SLIP OR FALL OF PERSON
Roca Dura Inc · Fall to the walkway or working surface

THE EMPLOYEE SLIPPED AND RECEIVED A HIT IN THE RIGHT SHOULDER.

1998 · 1 incident

February 24, 1998 PR · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman SLIP OR FALL OF PERSON
Rocadura Inc · Fall onto or against objects

EE WHILE HELPING TO INSTALL A PIECE OF STEEL IN TEH BOKET W/A LANDY SLIP AND FALL. HITTING THE BORDER OF THE GORET BRAKING ARE RIP IN HIS CHEST.