Mining Incidents

Cantera La Montaña Metal/Non-Metal

Cantera La Montaña · Surface
Controlled by Wilfredo Ruiz Nieves
Anasco, Aguadilla County, PR  ·  Active
MSHA Mine ID: 5400300

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Fatalities
0
Total incidents
19
Years on record
2002–2012
Latest incident
May 2012
Compliance record
MSHA citations since 2000
152
citations
52
significant & substantial
$30,754
proposed penalties
$30,192
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 Q4 4,446 0 0 0.0
2025 Q3 4,523 0 0 0.0
2025 Q2 4,310 2 0 464.0
2025 Q1 4,262 2 1 469.3
2024 Q4 4,957 0 0 0.0
2024 Q3 5,451 3 0 550.4
2024 Q2 5,136 0 0 0.0
2023 Q4 4,401 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

19 on file

2012 · 2 incidents

May 1, 2012 - · Metal/Non-Metal prep plant foreman, supervisor, mill plant supervisor, kiln supervisor HANDLING OF MATERIALS
Cantera La Cadena Inc · Caught in, under or between a moving and a stationary object

El empleado se encontraba linprando le correa de la procesadora, se pillo el dedo indice de la mano izguierda con una piedra. Al momento de la limpieza la planta encontraba apagada. (The employee was cleaning the processing plant belt; he got his left hand index finger with a rock. When cleaning, the plant is shut off).

March 26, 2012 - · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech OTHER
Cantera La Cadena Inc · Unclassified, insufficient data

Dolor agudo en la mano derecha que le coge los de dos indice y pulgar con adormecimiento e hinchazon. (Acute pain on the right hand that reaches the index and thumb fingers with numbness and swelling).

2011 · 1 incident

October 25, 2011 - · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech SLIP OR FALL OF PERSON
Cantera La Cadena Inc · Fall down stairs

MSHA Translation Going down the stairs of a crusher he slipped from before the last step and fell on his left hand.

2010 · 1 incident

February 11, 2010 - · Metal/Non-Metal welder (shop) MACHINERY
Cantera La Cadena Inc · Struck by... (Not Elsewhere Classified)

The miner was cutting steel plates. When he moved a steel plate it slipped and pinched his right hand index finger causing a contusion to the finger.

2007 · 6 incidents

December 12, 2007 - · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
Cantera La Cadena Inc · Struck by falling object

He and another helper were lifting a hydraulic motor and putting it on the work table. The motor slipped from the hand and fell on his left foot.

November 16, 2007 - · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
Cantera La Cadena Inc · Struck by... (Not Elsewhere Classified)

While he was tightening a bolt, he added a tube to the extension handle to add strength. The handle slipped and hit him on the small finger of the right hand.

November 5, 2007 - · Metal/Non-Metal mechanic helper HANDTOOLS (NONPOWERED)
Cantera La Cadena Inc · Struck by... (Not Elsewhere Classified)

EE was repairing a piece of a D-9 bulldozer. He hit it with a sledge hammer and a piece of metal penetrated the right hand near the index finger.

August 17, 2007 - · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech MACHINERY
Cantera La Cadena Inc · Struck by flying object

EE was polishing a bank of D-9 equipment with a polisher and got particles of metal in his right eye. At the time of the incident, he had not put on his security glasses.

August 1, 2007 - · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
Cantera La Cadena Inc · Over-exertion in lifting objects

While cleaning the area of the conveyor that was clogged, he felt a sharp pain on the bottom part of the back like a tear in the muscle. He was bent over for a long time.

March 7, 2007 - · Metal/Non-Metal drill operator OTHER
Cantera La Cadena Inc · Unclassified, insufficient data

Sharp pain in the lumbar area of the back. He is under medical care and the pain symptom has contined. He will now solicit payment from the State.

2006 · 2 incidents

July 6, 2006 - · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech MACHINERY
Cantera La Cadena Inc · Struck by... (Not Elsewhere Classified)

He was uncovering the grinder that was covered with rock. He was trying to break a rock with a small metal bar. When he put the bar towards the back of the grinder, the bar hit him under the left cheekbone causing a small wound. At the time of the accident, He was not wearing safety glasses.

March 25, 2006 - · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech SLIP OR FALL OF PERSON
Cantera La Cadena Inc · Contact with hot objects or substances

THE MAINTENANCE WORKER WAS ON SOME STAIRS WHEN HE SLIPPED ON SOME HOT PIPES THAT THEY WERE WELDING TOGETHER. APPARENTLY HE FELL & THAT'S HOW HE GOT HIS INJURIES.

2005 · 2 incidents

June 10, 2005 - · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
Cantera La Cadena Inc · Struck by... (Not Elsewhere Classified)

While trying to stop an oil leak he made a plug by using a handkerchief. He used a screwdriver to put more pressure on the handkerchief when it (the screwdriver) slipped producing a small wound on the left hand.

February 5, 2005 - · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
Cantera La Cadena Inc · Struck by falling object

While mounting the chain on the buldozer, the hook holding the chain came loose, puncturing the small finger on the right hand.

2004 · 3 incidents

September 27, 2004 - · Metal/Non-Metal prep plant foreman, supervisor, mill plant supervisor, kiln supervisor HANDLING OF MATERIALS
Cantera La Cadena Inc · Struck by... (Not Elsewhere Classified)

They were hauling a tooth (on a piece of equipment) which was tied with a linked chain, while tightening (the grip) one of the links came apart and caused the chain to tangle around ee's left thigh and body.

June 25, 2004 - · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
Cantera La Cadena Inc · Struck by falling object

EMPLOYEE WAS LOOSENING A SCREW WHILE ADJUSTING THE TENSION ON THE JAW(OF THE CRUSHER). THIS SCREW SEPARATED FROM THE PIECE WHICH HOLDS THE SPRING IN PLACE HITTING HIM & CAUSED A LACERATION WITH CONTUSION ON THE RT.THIGH/LEG.

March 8, 2004 - · Metal/Non-Metal welder (shop) MACHINERY
Cantera La Cadena Inc · Struck by... (Not Elsewhere Classified)

EE WAS WELDING A PIECE OF IRON. THERE WAS A GUST OF WIND AND A PARTICULATE (PARTICLE OF DUST)ENTERED RIGHT EYE. THIS PARTICLE PASSED THROUGH THE BACK OF WELDING MASK

2003 · 1 incident

November 4, 2003 - · Metal/Non-Metal mine manager, mine foreman, mine owner HANDTOOLS (NONPOWERED)
Cantera La Cadena Inc · Fall onto or against objects

EE HAD BEEN WORKING WITH A HEAVY SHOVEL IN THE TRUCK BED WHEN THE STICK PART OF THE SHOVEL CAME APART AND RESULTED IN HIS SLIPPING AND FALLING ON HIS RIGHT HAND.

2002 · 1 incident

October 21, 2002 - · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator SLIP OR FALL OF PERSON
Cantera La Cadena Inc · Fall from machine

GOING DOWN THE LADDER OF THE LOADER. SLIPPED AND FELL ABOUT 5 FEET. HURT ABOVE THE HEEL OF THE LEFT FOOT.