Mining Incidents

Cantera Hacienda San Martin: 6 MSHA citations Metal/Non-Metal

Dorado, Dorado County, PR  ·  Abandoned
MSHA Mine ID: 5400442

Cantera Hacienda San Martin has $856 in proposed MSHA penalties and $0 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 Hacienda San Martin.

Fatalities
0
Total incidents
0
Years on record
Latest incident
Compliance record
MSHA citations since 2001
6
citations
5
significant & substantial
$856
proposed penalties
$856
paid to date
100% of proposed penalties paid to date, a $0 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2001
4
inspections on record
30
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: 30 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 Hacienda San Martin has $856 in proposed MSHA penalties and $0 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.
$856
proposed penalties
$856
current assessed
$856
paid to date
$0
outstanding
6 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2001-11-01.
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.
83.3%
significant & substantial
100.0%
high negligence or reckless
83.3%
reasonably likely or greater
83.3%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 0.0% low, 0.0% moderate, 100.0% 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: 2001-11-01, 24 years ago
0%
of limit-tested samples over the exposure limit
3
samples
3
limit-tested
Most sampled contaminants
  • Nuisance dust, total, <1% Qtz2
  • Quartz, respirable, >1% Qtz1
Show the individual readings (3)
Date Contaminant Concentration Limit Conc / limit Occupation
2001-11-01 Quartz, respirable, >1% Qtz 0.41 2.64 0.16 Cleanup Man
2001-07-11 Nuisance dust, total, <1% Qtz 1.76 10 0.18 Cleanup Man
2001-07-11 Nuisance dust, total, <1% Qtz 1.13 10 0.11 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.
Ownership history
  1. Productora de Agregados 2001 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2003 0
2002 4
2001 26
Source: MSHA quarterly employment and production, updated weekly.

Cantera Hacienda San Martin sits in Dorado 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.
Dorado Municipio, Puerto Rico · Population 35,816
0.0%
Mining share of county employment
$33,388
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
2003 Q1 0 0 0
2002 Q4 0 0 0
2002 Q3 0 0 0
2002 Q2 0 0 0
2002 Q1 2,281 0 0 0.0
2001 Q4 12,603 0 0 0.0
2001 Q3 12,874 3 2 233.0
2001 Q2 11,906 0 0 0.0

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.