Mining Incidents

SDI Aggregates LLC: 145 MSHA citations Metal/Non-Metal

Miami, Miami-Dade County, FL  ·  Active
MSHA Mine ID: 0801336

SDI Aggregates LLC has $44K in proposed MSHA penalties and $0 outstanding across 3 contested dockets, plus health sampling and the full incident record.

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Fatalities
0
Total incidents
19
Years on record
2006–2024
Latest incident
Mar 2024
Compliance record
MSHA citations since 2005
145
citations
42
significant & substantial
$44,240
proposed penalties
$44,440
paid to date
100% of proposed penalties paid to date, a $0 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2005
54
inspections on record
949
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: 949 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
Imminent-danger orders
A Section 107(a) order removes miners from an area when an inspector finds an imminent danger. Each order is lifted once the condition is corrected, so this counts orders issued, not orders now in effect.
1
Section 107(a) orders
Most recent order: 2012-11-07.
On record since 2012.
Source: MSHA imminent-danger order records, updated weekly.

SDI Aggregates LLC has $44K in proposed MSHA penalties and $0 outstanding across 3 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.
$44K
proposed penalties
$44K
current assessed
$44K
paid to date
$0
outstanding
144 assessments are final orders; 3 contested dockets.
Of $2K in penalties contested before the Commission, $2K was upheld in final decisions.
As of the most recent assessment on 2026-03-20.
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.
29.2%
significant & substantial
6.9%
high negligence or reckless
29.2%
reasonably likely or greater
31.2%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 6.2% low, 86.8% moderate, 6.9% 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.
3 citations taken to the federal commission · 2% of citations on record
  • Settled 3 · 100%
100%
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 1 decided S&S contests · industry: 79%
0%
Penalty reduction in decided contests
$2K proposed, $2K 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 2019-10-01.
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 2011-76M Settlement Lesnick 2011 $1K → $1K
SE 2020-0001 Settlement Miller 2019 $121 → $121
SE 2015-0315 Prevail McCarthy 2016 $100 → $300
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: 2025-03-25
0%
of limit-tested samples over the exposure limit
31
samples
13
limit-tested
Most sampled contaminants
  • Respirable dust, <.1mg18
  • Nuisance dust, respirable, <1% Qtz6
  • Quartz, respirable, >1% Qtz3
  • Arsenic fumes2
Show the individual readings (55)
Date Contaminant Concentration Limit Conc / limit Occupation
2025-03-25 Respirable dust, <.1mg 0 Laborer, Bullgang
2025-03-25 Respirable dust, <.1mg 0 Laborer, Bullgang
2025-03-25 Nuisance dust, respirable, <1% Qtz 0.12 10 0.01 Front-end Loader Operator
2025-03-25 Nuisance dust, respirable, <1% Qtz 0.45 10 0.05 Laborer, Bullgang
2024-12-19 Respirable dust, <.1mg 0 Mechanic
2024-12-19 Respirable dust, <.1mg 0 Mechanic
2024-12-19 Respirable dust, <.1mg 0 Utility Man
2024-12-19 Quartz, respirable, >1% Qtz 0.31 1.56 0.20 Utility Man
2023-06-01 Respirable dust, <.1mg 0 Utility Man
2023-06-01 Respirable dust, <.1mg 0 Utility Man
2018-01-18 Respirable dust, <.1mg 0 Utility Man
2018-01-18 Respirable dust, <.1mg 0 Utility Man
2014-11-19 Respirable dust, <.1mg 0 Washer Operator
2014-11-19 Nuisance dust, respirable, <1% Qtz 0.23 10 0.02 Washer Operator
2014-11-19 Respirable dust, <.1mg 0 Dragline Operator
2014-11-19 Respirable dust, <.1mg 0 Dragline Operator
2014-11-19 Quartz, respirable, >1% Qtz 0.17 1.3 0.13 Oiler, Greaser
2011-10-04 Nuisance dust, respirable, <1% Qtz 0.24 10 0.02 Washer Operator
2011-10-04 Respirable dust, <.1mg 0 Front-end Loader Operator
2011-10-04 Nuisance dust, respirable, <1% Qtz 0.54 10 0.05 Front-end Loader Operator
2011-10-04 Quartz, respirable, >1% Qtz 0.13 1.08 0.12 Truck Driver
2010-06-09 Zinc oxide fumes 0 5 0.00 Welder, etc.
2010-06-09 Respirable dust, <.1mg 0 Oiler, Greaser
2010-06-09 Respirable dust, <.1mg 0 Front-end Loader Operator
2010-06-09 Respirable dust, <.1mg 0 Washer Operator
2010-06-09 Respirable dust, <.1mg 0 Oiler, Greaser
2010-06-09 Arsenic fumes 0 500 0.00 Welder, etc.
2010-06-09 Beryllium fumes 0 2 0.00 Welder, etc.
2010-06-09 Cadmium oxide fumes 0.16 100 0.00 Welder, etc.
2010-06-09 Chromium, insoluble 0 1 0.00 Welder, etc.
2010-06-09 Cobalt fumes 0.1 100 0.00 Welder, etc.
2010-06-09 Copper fumes 0 100 0.00 Welder, etc.
2010-06-09 Iron oxide fumes 0.01 10 0.00 Welder, etc.
2010-06-09 Lead fumes 0 150 0.00 Welder, etc.
2010-06-09 Magnesium oxide fumes 0 10 0.00 Welder, etc.
2010-06-09 Manganese fumes 0 5 0.00 Welder, etc.
2010-06-09 Molybdenum fumes 0 10 0.00 Welder, etc.
2010-06-09 Nickel fumes 0 1 0.00 Welder, etc.
2010-06-09 Vanadium fumes 0 50 0.00 Welder, etc.
2010-06-08 Arsenic fumes 0 500 0.00 Welder, etc.
2010-06-08 Zinc oxide fumes 0 5 0.00 Welder, etc.
2010-06-08 Vanadium fumes 0 50 0.00 Welder, etc.
2010-06-08 Nickel fumes 0 1 0.00 Welder, etc.
2010-06-08 Molybdenum fumes 0 10 0.00 Welder, etc.
2010-06-08 Manganese fumes 0 5 0.00 Welder, etc.
2010-06-08 Magnesium oxide fumes 0 10 0.00 Welder, etc.
2010-06-08 Lead fumes 0 150 0.00 Welder, etc.
2010-06-08 Iron oxide fumes 0.01 10 0.00 Welder, etc.
2010-06-08 Copper fumes 0.23 100 0.00 Welder, etc.
2010-06-08 Cobalt fumes 0.11 100 0.00 Welder, etc.
2010-06-08 Chromium, insoluble 0 1 0.00 Welder, etc.
2010-06-08 Cadmium oxide fumes 0 100 0.00 Welder, etc.
2010-06-08 Beryllium fumes 0 2 0.00 Welder, etc.
2005-07-13 Nuisance dust, respirable, <1% Qtz 0.21 10 0.02 Dragline Operator
2005-07-13 Respirable dust, <.1mg 0 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.

SDI Aggregates LLC recorded 0.00 reportable injury cases per 100 full-time workers in 2025.

Injury rate, 2025
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
Below average. The US metal and nonmetal mining average was 1.65 and the all-US-mining average was 1.97 cases per 100 workers.
In Florida, metal and nonmetal mining averaged 1.33 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
2025 * 0.00 0.00 0.000
2024 * 3.43 3.43 0.000
2023 * 0.00 0.00 0.000
2022 * 0.00 0.00 0.000
2021 * 0.00 0.00 0.000
2020 * 0.00 0.00 0.000
2019 * 2.87 2.87 0.000
2018 * 2.61 2.61 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
  1. SDI Quarry, Inc. 2005 to 2017
  2. Blue Water Industries 2017 to 2024
  3. Martin Marietta Southeast Agg Operations, LLC 2024 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2026 24
2025 21
2024 22
2023 26
2022 25
2021 24
2020 24
2019 27
2018 31
2017 50
2016 43
2015 35
2014 30
2013 26
2012 19
2011 21
2010 22
2009 22
2008 21
2007 16
2006 18
2005 10
Source: MSHA quarterly employment and production, updated weekly.

SDI Aggregates LLC sits in Miami-Dade County, Florida, 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.
Miami-Dade County, Florida · Population 2,685,296
0.0%
Mining share of county employment
$68,694
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 14,366 0 0 0.0
2026 Q1 16,729 1 0 59.8
2025 Q4 10,362 0 0 0.0
2025 Q3 9,095 0 0 0.0
2025 Q2 12,985 0 0 0.0
2025 Q1 11,996 0 0 0.0
2024 Q4 13,272 0 0 0.0
2024 Q3 14,273 0 0 0.0
Show 78 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2024 Q2 13,684 0 0 0.0
2024 Q1 17,119 0 0 0.0
2023 Q4 15,951 0 0 0.0
2023 Q3 16,832 0 0 0.0
2023 Q2 15,588 1 0 64.2
2023 Q1 17,610 0 0 0.0
2022 Q4 15,487 0 0 0.0
2022 Q3 16,581 0 0 0.0
2022 Q2 16,394 0 0 0.0
2022 Q1 16,869 0 0 0.0
2021 Q4 14,850 0 0 0.0
2021 Q3 15,064 0 0 0.0
2021 Q2 15,026 0 0 0.0
2021 Q1 14,224 0 0 0.0
2020 Q4 12,540 0 0 0.0
2020 Q3 13,653 0 0 0.0
2020 Q2 14,112 5 0 354.3
2020 Q1 16,026 2 0 124.8
2019 Q4 15,394 0 0 0.0
2019 Q3 18,777 0 0 0.0
2019 Q2 17,662 1 0 56.6
2019 Q1 17,941 0 0 0.0
2018 Q4 16,927 0 0 0.0
2018 Q3 18,355 0 0 0.0
2018 Q2 19,096 0 0 0.0
2018 Q1 22,191 2 0 90.1
2017 Q4 29,039 0 0 0.0
2017 Q3 32,773 0 0 0.0
2017 Q2 37,637 2 1 53.1
2017 Q1 36,789 0 0 0.0
2016 Q4 47,403 6 2 126.6
2016 Q3 34,091 10 3 293.3
2016 Q2 34,770 0 0 0.0
2016 Q1 32,557 8 1 245.7
2015 Q4 27,555 0 0 0.0
2015 Q3 25,054 0 0 0.0
2015 Q2 25,777 8 0 310.4
2015 Q1 27,634 0 0 0.0
2014 Q4 24,080 24 8 996.7
2014 Q3 25,768 0 0 0.0
2014 Q2 22,062 1 0 45.3
2014 Q1 7,064 0 0 0.0
2013 Q4 20,461 1 0 48.9
2013 Q3 19,117 0 0 0.0
2013 Q2 18,478 1 0 54.1
2013 Q1 18,820 0 0 0.0
2012 Q4 14,501 6 3 413.8
2012 Q3 14,866 0 0 0.0
2012 Q2 15,368 0 0 0.0
2012 Q1 15,416 2 1 129.7
2011 Q4 13,587 4 1 294.4
2011 Q3 13,474 0 0 0.0
2011 Q2 5,265 2 0 379.9
2011 Q1 15,062 0 0 0.0
2010 Q4 14,834 4 1 269.7
2010 Q3 15,373 0 0 0.0
2010 Q2 14,085 3 1 213.0
2010 Q1 14,567 8 7 549.2
2009 Q4 13,816 0 0 0.0
2009 Q3 13,697 2 2 146.0
2009 Q2 15,451 0 0 0.0
2009 Q1 13,005 1 0 76.9
2008 Q4 17,451 0 0 0.0
2008 Q3 18,378 4 0 217.7
2008 Q2 13,185 0 0 0.0
2008 Q1 10,515 3 1 285.3
2007 Q4 10,373 0 0 0.0
2007 Q3 9,301 0 0 0.0
2007 Q2 11,315 3 3 265.1
2007 Q1 16,610 0 0 0.0
2006 Q4 16,941 0 0 0.0
2006 Q3 14,690 0 0 0.0
2006 Q2 13,601 0 0 0.0
2006 Q1 11,947 0 0 0.0
2005 Q4 11,355 0 0 0.0
2005 Q3 8,675 1 0 115.3
2005 Q2 4,901 0 0 0.0
2005 Q1 1,295 0 0 0.0
No fatalities recorded at this mine.

Reportable incidents

19 on file

2024 · 1 incident

March 21, 2024 FL · Metal/Non-Metal outside foreman, leadman POWERED HAULAGE
Blue Water Industries · Struck by... (Not Elsewhere Classified)

Employee was using a piece of rebar in an attempt to dislodge a rock that was wedged between the conveyor frame and the head pulley of the VSI crusher feed conveyor. In doing this, the rebar got between the head pulley and the belt while it was running. This caused the rebar to strike both of EE's hands resulting in the amputation of the left thumb and the tip of the right thumb.

2019 · 1 incident

July 15, 2019 FL · Metal/Non-Metal belt foreman, maintenance foreman, maintenance supervisor SLIP OR FALL OF PERSON
Blue Water Industries · Fall to the walkway or working surface

Office employee fainted, due to an ongoing personal medical issue, and fell striking right shoulder on the ground. This resulted in a dislocated shoulder and small fracture to one of the bones in the shoulder.

2018 · 1 incident

May 11, 2018 FL · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman MACHINERY
Blue Water Industries · Caught in, under or between a moving and a stationary object

(IW) was adjusting the crusher apron with shims on the portable crushing unit. A hydraulic ram that raises the aprons had a bent cylinder, which limited the stroke. The preshift inspection sheet did not indicate an issue nor was it reported to the Manager. IW installed a makeshift support whereas the tip of EE's thumb caught between the cylinder and the makeshift support

2017 · 1 incident

September 26, 2017 FL · Metal/Non-Metal crane operator, mobile equipment operator (meo), dragline operator, dropball operator, rigger SLIP OR FALL OF PERSON
Blue Water Industries · Fall from machine

The employee lost footing on the last rung of the ladder while dismounting dragline, and fell to the ground. Recommendation: utilize a ridged mounted flat bar step in lieu of swinging chain and bar stock. Re instruct employee in safely mounting and dismounting equipment utilizing the 3 point method.

2016 · 3 incidents

November 12, 2016 FL · Metal/Non-Metal greaser, grease man, oiler, lube man, dragline oiler HANDLING OF MATERIALS
SDI Quarry, Inc. · Over-exertion (Not Elsewhere Classified)

Employee strained muscle in lower back during man overboard training exercise.

June 30, 2016 FL · Metal/Non-Metal crane operator, mobile equipment operator (meo), dragline operator, dropball operator, rigger OTHER
SDI Quarry, Inc. · Absorption of radiations, caustics, toxic and noxious substances

Spider bite.

May 9, 2016 FL · Metal/Non-Metal crane operator, mobile equipment operator (meo), dragline operator, dropball operator, rigger HANDTOOLS (NONPOWERED)
SDI Quarry, Inc. · Struck by... (Not Elsewhere Classified)

Employee was removing the plastic coating from the hoist cable with a utility knife. The knife was being drawn towards employee instead of away from body.

2015 · 1 incident

April 19, 2015 FL · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman MACHINERY
SDI Quarry, Inc. · Contact with hot objects or substances

EE was pressure cleaning with hot water a discharge head pulley on the VSI. His footing was lost due to grease from the cleaning process the trigger was engaged on the pressure washer and the spray from the nozzle struck his ankle.

2013 · 2 incidents

August 2, 2013 FL · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer HANDTOOLS (NONPOWERED)
SDI Quarry, Inc. · Struck by... (Not Elsewhere Classified)

Employee was cutting a wiper for the skirt board on the crusher. The blade on the utility knife broke off and lacerated hand.

June 10, 2013 FL · Metal/Non-Metal POWERED HAULAGE
SDI Quarry, Inc. · Accident type, without injuries

Conditions: Sunny, stable ground. The fully loaded tractor trailer with broken concrete was discharging load when a portion of the load was lodged at the driver side front of the trailer. The offset load caused the trailer to overturn towards the drivers side. The overturn resulted in damage to the tractor trucks drivers side of cab and twisted frame. Operator was not injured.

2012 · 2 incidents

December 14, 2012 FL · Metal/Non-Metal crane operator, mobile equipment operator (meo), dragline operator, dropball operator, rigger DISORDERS (REPEATED TRAUMA)
SDI Quarry, Inc. · (Not Elsewhere Classified)

EE was reported to have a threshold hearing level change in both ears during a recent audiogram hearing re-test.

October 23, 2012 FL · Metal/Non-Metal dispatcher HANDLING OF MATERIALS
SDI Quarry, Inc. · Over-exertion in lifting objects

Employee was lifting an approximately 40 pound bucket of rock from a pickup bed. The employee strained his upper back and shoulders while lifting this bucket of rock.

2011 · 4 incidents

September 21, 2011 FL · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech OTHER
SDI Quarry, Inc. · (Not Elsewhere Classified)

EE was operating a Skid Steer Loader on 9/21/11 when he started having severe chest pains. he was immediately taken to hospital by his supervisor. The next morning the EE told his super.that during a med. exam it was determined that the chest pains were caused by a severe case of scoliosis,and was not work related. The EE was separated from SDI Quarry, Inc. on 9/22/11.

June 6, 2011 FL · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer HANDTOOLS (NONPOWERED)
SDI Quarry, Inc. · Struck by... (Not Elsewhere Classified)

Employee was installing bucket teeth on a front end loader using a hammer. Upon impact of hammer with bucket teeth two metal fragments dislodged and struck employee in the right shoulder and the left chest pectoral muscle.

May 12, 2011 FL · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech MACHINERY
SDI Quarry, Inc. · Struck by falling object

Employee was carrying an air impact wrench with a three inch socket attached. The socket fell off the wrench striking the employees right foot.

February 4, 2011 FL · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
SDI Quarry, Inc. · Caught in, under or between a moving and a stationary object

Employee was assisting with the re-installation of a skirt board bracket. While attempting to reinstall the skirt board bracket, the bracket slipped, pinching the employee's right index finger.

2010 · 1 incident

May 14, 2010 FL · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDLING OF MATERIALS
SDI Quarry, Inc. · Caught in, under or between (Not Elsewhere Classified)

EE was removing a skirt board rubber mounting plate from a conveyor. The mounting plate slipped pinching the right thumb of the ee, removing a section of skin from the front of the ee right thumb.

2009 · 1 incident

July 17, 2009 FL · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver POWERED HAULAGE
SDI Quarry, Inc. · Struck against a moving object

EE was driving an operational F-350 Ford truck, when he veered off the road, was over 200' wide, running into a pile of boulders. EE claims that he experienved transmissino gear problems causing him to veer off road. The EE was given a post accident exam by a doctor who could not find any medical reasons to caues incident. EE denies he lost contrl by distraction or falling asleep.

2006 · 1 incident

October 23, 2006 FL · Metal/Non-Metal greaser, grease man, oiler, lube man, dragline oiler HANDLING OF MATERIALS
SDI Quarry, Inc. · Absorption of radiations, caustics, toxic and noxious substances

Employee first reported on 11/8/06 that he had spilled mineral spirits on his left foot on 10/23/06 at approx. 3:00 p.m. EE's foot became infected approx. 11 days later, requiring hospitalization. EE was using mineral spirits to clean grease from 4600 dragline.