Key Takeaway
DeSilva Gates Aggregates is a active surface mine producing SandAndGravel, located in SUNOL, Alameda County, CA. It has 242 violations on record (57 S&S) and $44K in proposed penalties. Operated by DeSilva Gates Construction LLC.
DeSilva Gates Aggregates
Operator: DeSilva Gates Construction LLC
Controller: De Silva Holding Company Inc; Richard B Gates
Location: SUNOL, Alameda County, CA
Employees: 10
Recent Violations
View all 242 →| Date | Section | S&S | Negligence | Penalty |
|---|---|---|---|---|
| 06/20/2025 | 56.20010 | Non-S&S | ModNegligence | $151 |
| 05/20/2025 | 56.11017 | Non-S&S | ModNegligence | $151 |
| 05/20/2025 | 56.20003(a) | Non-S&S | ModNegligence | $151 |
| 01/23/2025 | 56.11001 | Non-S&S | LowNegligence | $151 |
| 01/23/2025 | 56.14101(a)(2) | Non-S&S | ModNegligence | $151 |
| 05/22/2024 | 56.20010 | Non-S&S | ModNegligence | $147 |
| 05/21/2024 | 56.14207 | Non-S&S | ModNegligence | $147 |
| 05/21/2024 | 56.4601 | Non-S&S | ModNegligence | $147 |
| 02/02/2023 | 56.20010 | Non-S&S | ModNegligence | $143 |
| 01/12/2023 | 56.15020 | S&S | NoNegligence | $143 |
| 01/12/2023 | 56.12018 | Non-S&S | LowNegligence | $143 |
| 01/12/2023 | 56.11001 | Non-S&S | LowNegligence | $143 |
| 01/11/2023 | 56.15001 | Non-S&S | LowNegligence | $143 |
| 01/11/2023 | 56.16001 | Non-S&S | ModNegligence | $143 |
| 01/11/2023 | 56.11002 | Non-S&S | LowNegligence | $143 |
| 01/10/2023 | 56.11001 | S&S | LowNegligence | $198 |
| 01/10/2023 | 56.14100(b) | Non-S&S | ModNegligence | $143 |
| 10/29/2019 | 56.14207 | Non-S&S | ModNegligence | $121 |
| 10/29/2019 | 56.12018 | Non-S&S | ModNegligence | $121 |
| 04/24/2019 | 56.14112(b) | Non-S&S | ModNegligence | $121 |
Accidents & Injuries
View all 12 →| Date | Classification | Injury | Days Lost |
|---|---|---|---|
| 10/31/2023 | MACHINERY | DAYS AWAY FROM WORK ONLY | None |
| 12/13/2014 | HANDLING OF MATERIALS | DAYS AWAY FROM WORK ONLY | 135d lost |
| 11/14/2012 | HANDLING OF MATERIALS | DAYS RESTRICTED ACTIVITY ONLY | 6d restricted |
| 06/07/2010 | SLIP OR FALL OF PERSON | DAYS RESTRICTED ACTIVITY ONLY | 9d restricted |
| 08/26/2009 | SLIP OR FALL OF PERSON | DAYS RESTRICTED ACTIVITY ONLY | 15d restricted |
| 09/26/2003 | HANDLING OF MATERIALS | DAYS RESTRICTED ACTIVITY ONLY | 6d restricted |
| 09/13/2002 | MACHINERY | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 09/13/2001 | HANDLING OF MATERIALS | DAYS AWAY FROM WORK ONLY | 46d lost |
| 03/02/2001 | HANDLING OF MATERIALS | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 03/01/2001 | SLIP OR FALL OF PERSON | DAYS RESTRICTED ACTIVITY ONLY | 49d restricted |
Inspections
View all 92 →| Begin | End | Hours | Inspectors |
|---|---|---|---|
| 01/28/2026 | 01/29/2026 | 6.50 | 1 |
| 10/08/2025 | 10/15/2025 | 21.25 | 1 |
| 08/21/2025 | 08/22/2025 | 5.25 | 1 |
| 06/23/2025 | 06/23/2025 | 6.25 | 1 |
| 06/16/2025 | 06/20/2025 | 6.75 | 1 |
| 05/19/2025 | 05/21/2025 | 22.00 | 1 |
| 03/25/2025 | 03/25/2025 | 6.25 | 1 |
| 01/27/2025 | 01/30/2025 | 8.25 | 1 |
| 01/23/2025 | 01/24/2025 | 12.00 | 1 |
| 08/22/2024 | 08/23/2024 | 3.00 | 1 |
Mine Details
Related Mines
Frequently Asked Questions
How many MSHA violations does DeSilva Gates Aggregates have?
DeSilva Gates Aggregates has 242 MSHA violations on record, of which 57 are classified as Significant & Substantial (S&S). Total proposed penalties amount to $44K.
What type of mine is DeSilva Gates Aggregates?
DeSilva Gates Aggregates is a Surface mine producing SandAndGravel, located in SUNOL, Alameda County, CA. It currently has 10 employees.
Has anyone been injured or killed at DeSilva Gates Aggregates?
According to MSHA records, DeSilva Gates Aggregates has 12 reported accident/injury records and 0 fatalities on file.
Who operates DeSilva Gates Aggregates?
DeSilva Gates Aggregates is operated by DeSilva Gates Construction LLC and controlled by De Silva Holding Company Inc; Richard B Gates. MSHA Mine ID: 0402098.