Key Takeaway
G3 Enterprises Byron Plant is a active surface mine producing SandAndGravel, located in Byron, Contra Costa County, CA. It has 259 violations on record (60 S&S) and $96K in proposed penalties. Operated by G3 Enterprises, Inc..
G3 Enterprises Byron Plant
Operator: G3 Enterprises, Inc.
Controller: Tom Cook
Location: Byron, Contra Costa County, CA
Employees: 21
Recent Violations
View all 259 →| Date | Section | S&S | Negligence | Penalty |
|---|---|---|---|---|
| 10/21/2025 | 56.15001 | Non-S&S | ModNegligence | $226 |
| 10/21/2025 | 56.20003(a) | Non-S&S | ModNegligence | $226 |
| 10/21/2025 | 46.7(a) | Non-S&S | ModNegligence | $252 |
| 07/15/2025 | 56.14107(a) | Non-S&S | ModNegligence | $755 |
| 07/15/2025 | 56.14109 | Non-S&S | ModNegligence | $226 |
| 07/15/2025 | 56.11001 | S&S | ModNegligence | $1,126 |
| 07/15/2025 | 56.14109 | Non-S&S | ModNegligence | $226 |
| 07/15/2025 | 56.12032 | Non-S&S | ModNegligence | $755 |
| 07/15/2025 | 56.11002 | S&S | ModNegligence | $1,679 |
| 11/20/2024 | 56.9300(b) | Non-S&S | ModNegligence | $328 |
| 11/20/2024 | 56.14107(a) | Non-S&S | ModNegligence | $328 |
| 11/20/2024 | 56.11001 | Non-S&S | ModNegligence | $328 |
| 11/20/2024 | 56.14107(a) | Non-S&S | ModNegligence | $328 |
| 11/20/2024 | 56.11002 | Non-S&S | ModNegligence | $221 |
| 11/20/2024 | 56.14101(a)(2) | Non-S&S | ModNegligence | $328 |
| 07/03/2024 | 56.20010 | Non-S&S | ModNegligence | $221 |
| 07/02/2024 | 56.12032 | Non-S&S | ModNegligence | $221 |
| 07/02/2024 | 56.12032 | Non-S&S | ModNegligence | $221 |
| 07/02/2024 | 56.14107(a) | Non-S&S | ModNegligence | $328 |
| 07/02/2024 | 56.12004 | Non-S&S | ModNegligence | $221 |
Accidents & Injuries
View all 16 →| Date | Classification | Injury | Days Lost |
|---|---|---|---|
| 10/06/2025 | SLIP OR FALL OF PERSON | DAYS AWAY FROM WORK ONLY | None |
| 10/11/2023 | POISONING (TOXIC MATERIALS) | OCCUPATNAL ILLNESS NOT DEG 1-6 | None |
| 07/30/2022 | HANDLING OF MATERIALS | DAYS RESTRICTED ACTIVITY ONLY | 73d restricted |
| 04/13/2021 | SLIP OR FALL OF PERSON | DYS AWY FRM WRK & RESTRCTD ACT | 3d lost, 3d restricted |
| 01/02/2018 | HANDTOOLS (NONPOWERED) | DAYS RESTRICTED ACTIVITY ONLY | 5d restricted |
| 06/26/2017 | SLIP OR FALL OF PERSON | DAYS AWAY FROM WORK ONLY | 6d lost |
| 06/17/2016 | SLIP OR FALL OF PERSON | DAYS AWAY FROM WORK ONLY | 112d lost |
| 02/03/2016 | OTHER | INJURIES DUE TO NATURAL CAUSES | 7d lost |
| 10/28/2015 | HANDTOOLS (NONPOWERED) | DAYS RESTRICTED ACTIVITY ONLY | 4d restricted |
| 08/05/2014 | HANDLING OF MATERIALS | DAYS AWAY FROM WORK ONLY | 13d lost |
Inspections
View all 79 →| Begin | End | Hours | Inspectors |
|---|---|---|---|
| 10/20/2025 | 10/21/2025 | 14.50 | 1 |
| 07/14/2025 | 07/17/2025 | 26.00 | 1 |
| 07/10/2025 | 07/10/2025 | 1.50 | 1 |
| 11/26/2024 | 11/26/2024 | 7.00 | 1 |
| 11/19/2024 | 11/21/2024 | 26.00 | 1 |
| 10/02/2024 | 10/02/2024 | 3.75 | 1 |
| 10/02/2024 | 10/02/2024 | 3.25 | 1 |
| 07/03/2024 | 07/05/2024 | 3.25 | 1 |
| 07/01/2024 | 07/05/2024 | 19.75 | 1 |
| 02/12/2024 | 02/12/2024 | 4.00 | 1 |
Mine Details
Related Mines
Frequently Asked Questions
How many MSHA violations does G3 Enterprises Byron Plant have?
G3 Enterprises Byron Plant has 259 MSHA violations on record, of which 60 are classified as Significant & Substantial (S&S). Total proposed penalties amount to $96K.
What type of mine is G3 Enterprises Byron Plant?
G3 Enterprises Byron Plant is a Surface mine producing SandAndGravel, located in Byron, Contra Costa County, CA. It currently has 21 employees.
Has anyone been injured or killed at G3 Enterprises Byron Plant?
According to MSHA records, G3 Enterprises Byron Plant has 16 reported accident/injury records and 0 fatalities on file.
Who operates G3 Enterprises Byron Plant?
G3 Enterprises Byron Plant is operated by G3 Enterprises, Inc. and controlled by Tom Cook. MSHA Mine ID: 0401949.