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

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Fatalities
0
Total incidents
18
Years on record
2002–2017
Latest incident
Mar 2017
Compliance record
MSHA citations since 2000
116
citations
44
significant & substantial
$24,354
proposed penalties
$23,262
paid to date
Source: MSHA violations data, updated weekly.
Quarterly safety rates
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
Quarters under 100,000 reported hours are greyed: too few hours for a stable rate.
No fatalities recorded at this mine.

Reportable incidents

18 on file

2017 · 2 incidents

March 2, 2017 - · 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 - · 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 - · 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 - · 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 - · 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 - · 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 - · 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 - · 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 - · 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 - · 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 - · 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 - · 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 - · 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 - · 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 - · 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.