Mining Incidents

SAN LORENZO SAND & GRAVEL COMPANY Metal/Non-Metal

Controlled by M C O Industries Inc
San Lorenzo, Guayama County, PR  ·  Abandoned
MSHA Mine ID: 5400050

SAN LORENZO SAND & GRAVEL COMPANY has $24K 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
29
Years on record
1983–2017
Latest incident
Mar 2017
Compliance record
MSHA citations since 2000
116
citations
44
significant & substantial
$24,354
proposed penalties
$23,262
paid to date
96% of proposed penalties paid to date, a $1,092 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2000
149
inspections on record
1,155
inspection hours
10.0
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.
116 citations across 1,155 inspection hours.
Source: MSHA inspections data, updated weekly.

SAN LORENZO SAND & GRAVEL COMPANY has $24K 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.
$24K
proposed penalties
$23K
current assessed
$23K
paid to date
$0
outstanding
111 assessments are final orders; 3 contested dockets.
As of the most recent assessment on 2025-04-02.
Source: MSHA assessed-violations and conference/litigation data, updated weekly.
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
2025 Q2 2,149 3 1 1396.0
2025 Q1 2,197 0 0 0.0
2024 Q4 2,585 1 0 386.8
2024 Q3 1,792 0 0 0.0
2024 Q2 3,476 3 0 863.1
2024 Q1 4,026 0 0 0.0
2023 Q4 4,194 1 1 238.4
2023 Q3 4,540 0 0 0.0
Show 94 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2023 Q2 4,907 1 0 203.8
2023 Q1 5,002 0 0 0.0
2022 Q4 4,920 3 1 609.8
2022 Q3 5,261 0 0 0.0
2022 Q2 5,446 4 0 734.5
2022 Q1 5,495 0 0 0.0
2021 Q4 5,599 2 0 357.2
2021 Q3 5,283 0 0 0.0
2021 Q2 5,492 1 0 182.1
2021 Q1 5,637 0 0 0.0
2020 Q4 4,993 2 0 400.6
2020 Q3 5,745 0 0 0.0
2020 Q2 4,845 4 2 825.6
2020 Q1 5,351 0 0 0.0
2019 Q4 6,021 3 1 498.3
2019 Q3 5,209 0 0 0.0
2019 Q2 5,223 1 1 191.5
2019 Q1 5,313 0 0 0.0
2018 Q4 5,039 1 1 198.5
2018 Q3 4,668 0 0 0.0
2018 Q2 4,938 0 0 0.0
2018 Q1 4,991 0 0 0.0
2017 Q4 5,332 1 0 187.5
2017 Q3 5,072 0 0 0.0
2017 Q2 5,208 2 1 384.0
2017 Q1 3,274 0 0 0.0
2016 Q4 0 0 0
2016 Q3 0 0 0
2016 Q2 6,606 1 0 151.4
2016 Q1 6,611 0 0 0.0
2015 Q4 6,423 2 0 311.4
2015 Q3 6,817 3 1 440.1
2015 Q2 6,840 0 0 0.0
2015 Q1 6,613 1 0 151.2
2014 Q4 6,725 0 0 0.0
2014 Q3 7,093 0 0 0.0
2014 Q2 7,158 1 0 139.7
2014 Q1 6,938 0 0 0.0
2013 Q4 6,739 2 2 296.8
2013 Q3 7,276 0 0 0.0
2013 Q2 8,462 2 0 236.4
2013 Q1 8,421 2 2 237.5
2012 Q4 8,496 0 0 0.0
2012 Q3 7,724 0 0 0.0
2012 Q2 8,111 0 0 0.0
2012 Q1 7,127 3 0 420.9
2011 Q4 8,246 0 0 0.0
2011 Q3 6,968 1 0 143.5
2011 Q2 7,410 2 0 269.9
2011 Q1 7,157 0 0 0.0
2010 Q4 7,802 1 0 128.2
2010 Q3 7,370 0 0 0.0
2010 Q2 6,914 0 0 0.0
2010 Q1 7,497 0 0 0.0
2009 Q4 9,577 6 1 626.5
2009 Q3 9,413 0 0 0.0
2009 Q2 8,337 0 0 0.0
2009 Q1 8,948 0 0 0.0
2008 Q4 10,849 1 0 92.2
2008 Q3 11,449 0 0 0.0
2008 Q2 10,777 8 1 742.3
2008 Q1 10,334 3 1 290.3
2007 Q4 10,845 0 0 0.0
2007 Q3 9,971 0 0 0.0
2007 Q2 10,230 5 2 488.8
2007 Q1 11,692 0 0 0.0
2006 Q4 12,482 4 3 320.5
2006 Q3 11,896 0 0 0.0
2006 Q2 12,745 3 3 235.4
2006 Q1 12,347 0 0 0.0
2005 Q4 12,588 0 0 0.0
2005 Q3 11,058 0 0 0.0
2005 Q2 10,756 4 1 371.9
2005 Q1 9,630 0 0 0.0
2004 Q4 10,249 1 1 97.6
2004 Q3 10,275 1 0 97.3
2004 Q2 9,885 0 0 0.0
2004 Q1 9,161 0 0 0.0
2003 Q4 9,741 4 1 410.6
2003 Q3 9,868 0 0 0.0
2003 Q2 9,995 0 0 0.0
2003 Q1 9,492 3 3 316.1
2002 Q4 9,824 0 0 0.0
2002 Q3 10,305 0 0 0.0
2002 Q2 10,249 0 0 0.0
2002 Q1 9,885 1 0 101.2
2001 Q4 9,587 8 4 834.5
2001 Q3 10,534 0 0 0.0
2001 Q2 11,494 2 2 174.0
2001 Q1 11,740 0 0 0.0
2000 Q4 11,635 8 7 687.6
2000 Q3 12,257 0 0 0.0
2000 Q2 12,393 0 0 0.0
2000 Q1 11,756 0 0 0.0
No fatalities recorded at this mine.

Reportable incidents

29 on file

2017 · 2 incidents

March 2, 2017 PR · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech DISORDERS (REPEATED TRAUMA)
SAN LORENZO SAND & GRAVEL COMPANY · (Not Elsewhere Classified)

Hearing loss.

February 27, 2017 PR · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator DISORDERS (REPEATED TRAUMA)
SAN LORENZO SAND & GRAVEL COMPANY · (Not Elsewhere Classified)

Hearing loss

2014 · 1 incident

2013 · 1 incident

2009 · 2 incidents

September 11, 2009 PR · Metal/Non-Metal welder (shop) HANDLING OF MATERIALS
SAN LORENZO SAND & GRAVEL COMPANY · Struck by falling object

Buscando herramienta en la caja de herramientas la tapa de la misma bajo cayendole en un dedo de la mano derecha. (Seeking tool in the toolbox the cover descended falling on a finger of the right hand).

May 6, 2009 PR · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer HANDLING OF MATERIALS
SAN LORENZO SAND & GRAVEL COMPANY · Caught in, under or between a moving and a stationary object

When he got into the machine and closed the door, he caught his right hand finger and sustained a cut.

2008 · 1 incident

November 17, 2008 PR · Metal/Non-Metal pumper MACHINERY
SAN LORENZO SAND & GRAVEL COMPANY · Struck by falling object

Ayudando al Soldador a soldar unos tubos los mismos se resbalaron cayendole en dos dedos de la mano izquierda. Helping to weld tubes with a soldering iron, the tubes slipped falling onto two fingers on his left hand.

2007 · 2 incidents

December 3, 2007 PR · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech SLIP OR FALL OF PERSON
SAN LORENZO SAND & GRAVEL COMPANY · Fall from machine

Estaba limpiando bateria camion Euclid de espalda hacia la tumba del camion, resbalo cayendo de pie al piso y luego se desplomo al piso. Translation: He was cleaning the Euclid battery on his back towards the top of the R-35. He slipped feet down & then hit the floor.

October 4, 2007 PR · Metal/Non-Metal miner, prospector, nec OTHER
SAN LORENZO SAND & GRAVEL COMPANY · Unclassified, insufficient data

El empleado alega dolor en la parte baja de la espalda e hinchazon en la rodilla derecha. Lo referimos al C. F. S. E. y acataremos la decision con su relacion al trabajo.

2006 · 2 incidents

November 27, 2006 PR · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDTOOLS (NONPOWERED)
SAN LORENZO SAND & GRAVEL COMPANY · Struck by... (Not Elsewhere Classified)

Ayudando a reparar una goma equipo Euclids, al safarse la herramienta choco con el cemento y la herramienta le dio en la cabeza. (Helping to repair equipment, his tool collided with the cement and hit him in the head).

March 14, 2006 PR · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech STRIKING OR BUMPING
SAN LORENZO SAND & GRAVEL COMPANY · Struck against stationary object

Estaba mecanizando debajo de un equipo (louder) y al salir se dio un golpe con el equipo en la cabeza. (He was doing mechanical work under the equipment (loader) and when he was coming back up (leaving) he bumped his head on the equipment.)

2005 · 2 incidents

December 30, 2005 PR · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
SAN LORENZO SAND & GRAVEL COMPANY · Struck against stationary object

Al estar mecanizando en el equipo pesado instalando una pieza pesada al moverse y desvalancearse la pieza le pincho dedo indice de la mano izquierda.

April 20, 2005 PR · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer SLIP OR FALL OF PERSON
SAN LORENZO SAND & GRAVEL COMPANY · Fall onto or against objects

Al bajarse del equipo resbalo se quedo colgando del equipo, lastimandose la rodilla de la pierna izquierda y el pecho. (EE was getting off dozer - walking down dozer track - when his foot got caught and he slipped and fell against the dozer, injuring his left knee and his chest.)

2004 · 1 incident

May 21, 2004 PR · Metal/Non-Metal assistant mine foreman, assistant mine manager HANDTOOLS (NONPOWERED)
SAN LORENZO SAND & GRAVEL COMPANY · Struck by... (Not Elsewhere Classified)

EE WAS ATTEMPTING TO STRAIGHTEN OUT A CONVEYOR BELT ON ROLLERS WITH A PRY BAR. EE LOST HIS TEMPER AND STARTED HITTING THE CONVEYOR WITH THE PRY BAR. THE PRY BAR SLIPPED AND HIT HIS FACE. EE WILL NOT BE ALLOWED TO RETURN TO WORK UNTIL RELEASED BY THE PUERTO RICAN COUNTERPART OF WORKERS' COMP. SAFETY TRAINING SESSION HELD FOR ALL EMPLOYEES (AND EE UPON HIS RETURN).

2002 · 4 incidents

August 23, 2002 PR · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer OCCUPATIONAL SKIN DISEASES
SAN LORENZO SAND & GRAVEL COMPANY · Absorption of radiations, caustics, toxic and noxious substances

EE WAS WORKING IN THE SHOP FIXING THE MACHINE. WHILE IN CONTACT WITH CERTAIN CHEMICALS (GREASE ETC) HE FELT PRICKLY ALL OVER HIS BODY (MAINLY IN THE HANDS). LATER HE FELT BUMPS IN DIFFERENT PA RTS OF HIS BODY.

May 5, 2002 PR · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer MACHINERY
SAN LORENZO SAND & GRAVEL COMPANY · Struck against a moving object

OPERATING THE D8L WHEN REVERSING HE FELT A PAIN IN HIS BACK. HE FELT THE PAIN ALL THRU THE NIGHT.

February 27, 2002 PR · Metal/Non-Metal mine manager, mine foreman, mine owner HANDLING OF MATERIALS
SAN LORENZO SAND & GRAVEL COMPANY · Struck by falling object

WHILE INSTALLING SOME BALL BEARINGS WITH A HYDRAULIC CAT WHICH EXERTED PRESSURE TO A PIECE OF WOOD, IT SLIPPED AND FELL ON HIS LEFT FOOT.

1996 · 1 incident

January 2, 1996 PR · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer HANDLING OF MATERIALS
SAN LORENZO SAND & GRAVEL COMPANY · Struck by flying object

EE WAS DRAWING THE BUCKET OF THE EXCAVATOR BACKWARD WHEN A PARTICLE OF STEEL OR METAL FLEW OUT AND EMBEDDED ITSELF IN EE RIGHT LEG.

1995 · 3 incidents

December 27, 1995 PR · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator HANDTOOLS (NONPOWERED)
SAN LORENZO SAND & GRAVEL COMPANY · Struck by flying object

WHILE INSTALLING A DOOR ON THE EXCAVATOR, HE KNOCKED OFF AN IRON PARTICLE, WHICH WENT INTO HIS LEFT LEG.

March 6, 1995 PR · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman POWERED HAULAGE
SAN LORENZO SAND & GRAVEL COMPANY · Over-exertion (Not Elsewhere Classified)

HE WAS GIVING INSTRUCTIONS TO A COMPANION ABOUT THE EQUIPMENT,...., HE COULD NO STRAIGHTEN UP.

1994 · 3 incidents

November 4, 1994 PR · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver POWERED HAULAGE
SAN LORENZO SAND & GRAVEL COMPANY · Struck by... (Not Elsewhere Classified)

WHILE CHECKING NOISE IN THE TRUCK A STONE ROLLED OUT AND STRUCK HIM IN LEFT LEG.

September 21, 1994 PR · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
SAN LORENZO SAND & GRAVEL COMPANY · Struck by falling object

EE WAS REPLACING HYDRAULIC CYLINDER WHEN IT FELLON HIS LEFT HAND.

January 25, 1994 PR · Metal/Non-Metal mechanic helper POWERED HAULAGE
SAN LORENZO SAND & GRAVEL COMPANY · Struck by... (Not Elsewhere Classified)

TRING TO TAKE OUT A PISTON FROM AN EUCLID TRUCKMOTOR,THEMOTOR FAN TURNED TO THE LEFT LACERATING HIS THIRD LEFT HAND FINGER.

1988 · 1 incident

May 30, 1988 PR · Metal/Non-Metal welder (shop) MACHINERY
SAN LORENZO SAND & GRAVEL COMPANY · Contact with hot objects or substances

HE WAS SOLDERING WHEN A BIT OF THE HOT METAL DROPPED INTO HIS RT.BOOT VICTIM RECEIVED VARIOUS BURNS ON HIS FOOT

1987 · 2 incidents

November 16, 1987 PR · Metal/Non-Metal welder (shop) HANDLING OF MATERIALS
SAN LORENZO SAND & GRAVEL COMPANY · Absorption of radiations, caustics, toxic and noxious substances

WHILE BATTERY WAS ON CHARGE SUBJECT REMOVED THE BATTERY CAPS AND ACID BOILED OVER AND SPLASHED INTO HIS EYES.

July 21, 1987 PR · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDLING OF MATERIALS
SAN LORENZO SAND & GRAVEL COMPANY · Struck by... (Not Elsewhere Classified)

WHILE INSTALLING PARTS IN THE PLANT, ONE OF THE PARTS SLIPPED CUTTING THEINJURED'S FINGER ON RIGHT HAND.

1983 · 1 incident

December 5, 1983 PR · Metal/Non-Metal prep plant foreman, supervisor, mill plant supervisor, kiln supervisor POWERED HAULAGE
SAN LORENZO SAND & GRAVEL COMPANY · Caught in, under or between (Not Elsewhere Classified)

EE WAS ALIGNING THE CONVEYOR BELT WHEREBY THE WRENCH USED TO ADJUST THE BELT CAUGHT THE PULLEY THEREBY DRAWING EES RIGHT HAND IN BETWEEN THE BELT & PULLEY.

For insurers, brokers, and safety consultants

The full compliance file on SAN LORENZO SAND & GRAVEL COMPANY

A dated report covering the 26-year penalty trail, line-item violation pattern, contest and docket posture, rate-normalized peer benchmark, and full fatality history. Delivered as a PDF with the underlying data as CSV.