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Montecielo Quarry LLC Metal/Non-Metal

BLUE ROCK INC · Surface

Controlled by Moraima Cintron Aviles; Alejandro Castaneda Olivera

Guaynabon, Bayamon County, PR · Active

MSHA Mine ID: 5400461

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Email me when a new MSHA incident is filed at Montecielo Quarry LLC.

Fatalities: 0
Total incidents: 2
Years on record: 2023–2025
Latest incident: Aug 2025

Compliance record

MSHA citations since 2005

246

citations

significant & substantial

$114,955

proposed penalties

$83,065

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	4,260	7	3	1643.2
2025 Q3	3,157	6	2	1900.5
2025 Q2	3,417	1	0	292.7
2025 Q1	3,312	8	5	2415.5
2024 Q4	4,051	0	0	0.0
2024 Q3	4,589	3	0	653.7
2024 Q2	4,248	0	0	0.0
2024 Q1	4,278	14	4	3272.6

Quarters under 100,000 reported hours are greyed: too few hours for a stable rate.

No fatalities recorded at this mine.

Reportable incidents

2 on file

2025 · 1 incident

August 21, 2025 - · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS

BLUE ROCK INC · Struck by... (Not Elsewhere Classified)

EL Señor Jose Valdes se disponia a conectar la correa manualmente cuando se quito el capacete para inclinarsehacia abajo y sufrio un impacto y se percata que una piedra le dio en la cabeza causando una herida abierta.

2023 · 1 incident

September 11, 2023 - · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS

BLUE ROCK INC · Struck by flying object

Mechanic opened the door of the 769C such door closed hitting their left shoulder