Key Takeaway

Cantera San Antonio is a active surface mine producing Stone, located in Guaynabo, Bayamon County, PR. It has 161 violations on record (55 S&S) and $90K in proposed penalties. Operated by Empresas Ortiz Brunet Inc.

Cantera San Antonio

Active Surface Stone

Operator: Empresas Ortiz Brunet Inc

Controller: Carlos Ortiz Brunet

Location: Guaynabo, Bayamon County, PR

Employees: 37

161
Violations
55
S&S Violations
55
Accidents
$90K
Penalties

Recent Violations

View all 161 →
Date Section S&S Negligence Penalty
02/04/2026 56.11002 Non-S&S ModNegligence $0
02/03/2026 56.15007 S&S ModNegligence $0
12/01/2025 56.14110 S&S ModNegligence $0
12/01/2025 56.14105 S&S ModNegligence $0
12/01/2025 56.15005 S&S ModNegligence $0
07/16/2025 56.14107(a) Non-S&S ModNegligence $151
07/15/2025 56.9300(a) S&S ModNegligence $697
07/15/2025 56.14100(b) Non-S&S ModNegligence $151
01/23/2025 56.12030 S&S HighNegligence $3,448
01/21/2025 56.14100(b) Non-S&S ModNegligence $313
01/21/2025 56.14211(e) Non-S&S ModNegligence $465
01/21/2025 56.14207 Non-S&S LowNegligence $151
01/15/2025 Non-S&S $0
01/15/2025 56.14105 S&S ModNegligence $3,832
01/15/2025 56.12012 Non-S&S HighNegligence $3,448
01/14/2025 56.14100(b) Non-S&S ModNegligence $151
10/29/2024 56.15002 S&S LowNegligence $147
09/04/2024 56.14100(b) Non-S&S ModNegligence $357
09/04/2024 56.14100(b) S&S ModNegligence $3,944
03/20/2024 46.8(a)(2) Non-S&S ModNegligence $164

Accidents & Injuries

View all 55 →
Date Classification Injury Days Lost
01/10/2026 HANDLING OF MATERIALS DAYS AWAY FROM WORK ONLY 3d lost
11/07/2025 SLIP OR FALL OF PERSON DAYS AWAY FROM WORK ONLY None
10/04/2025 MACHINERY DAYS AWAY FROM WORK ONLY 38d lost
10/01/2025 MACHINERY DAYS AWAY FROM WORK ONLY None
02/11/2025 MACHINERY DAYS AWAY FROM WORK ONLY 3d lost
01/13/2025 HANDLING OF MATERIALS DAYS AWAY FROM WORK ONLY 8d lost
10/15/2024 STRIKING OR BUMPING DAYS AWAY FROM WORK ONLY 4d lost
05/06/2024 SLIP OR FALL OF PERSON DAYS AWAY FROM WORK ONLY 284d lost
03/29/2023 EXPLODING VESSELS UNDER PRESSURE DAYS AWAY FROM WORK ONLY 6d lost
03/03/2023 STEPPING OR KNEELING ON OBJECT DAYS AWAY FROM WORK ONLY 2d lost

Inspections

View all 165 →
Begin End Hours Inspectors
02/18/2026 02/18/2026 4.50 1
02/03/2026 02/05/2026 27.00 1
12/01/2025 12/02/2025 7.00 1
12/01/2025 12/03/2025 5.00 1
12/01/2025 12/03/2025 7.50 1
07/28/2025 07/28/2025 4.50 1
07/15/2025 07/29/2025 35.00 1
02/27/2025 02/27/2025 6.00 1
02/20/2025 02/20/2025 8.00 1
02/06/2025 02/07/2025 8.00 1

Mine Details

MSHA Mine ID5400135
Mine TypeSurface
StatusActive
CommodityStone
SIC DescriptionCrushed, Broken Limestone NEC
Employees37
Days/Week6.0
Hours/Shift10.0
Coordinates18.3377780, -66.0958330
Nearest TownGuaynabo

Frequently Asked Questions

How many MSHA violations does Cantera San Antonio have?

Cantera San Antonio has 161 MSHA violations on record, of which 55 are classified as Significant & Substantial (S&S). Total proposed penalties amount to $90K.

What type of mine is Cantera San Antonio?

Cantera San Antonio is a Surface mine producing Stone, located in Guaynabo, Bayamon County, PR. It currently has 37 employees.

Has anyone been injured or killed at Cantera San Antonio?

According to MSHA records, Cantera San Antonio has 55 reported accident/injury records and 0 fatalities on file.

Who operates Cantera San Antonio?

Cantera San Antonio is operated by Empresas Ortiz Brunet Inc and controlled by Carlos Ortiz Brunet. MSHA Mine ID: 5400135.