Key Takeaway
Alpine Silica-San Antonio is a active surface mine producing Nonmetal, located in San Antonio, Bexar County, TX. It has 70 violations on record (14 S&S) and $21K in proposed penalties. Operated by Alpine Silica, LLC.
Alpine Silica-San Antonio
Operator: Alpine Silica, LLC
Controller: Pro Frac Holding Corp
Location: San Antonio, Bexar County, TX
Employees: 25
Recent Violations
View all 70 →| Date | Section | S&S | Negligence | Penalty |
|---|---|---|---|---|
| 11/13/2025 | 56.20003(a) | Non-S&S | ModNegligence | $151 |
| 11/12/2025 | 56.20003(b) | Non-S&S | ModNegligence | $151 |
| 07/09/2025 | 56.14112(b) | Non-S&S | ModNegligence | $642 |
| 07/09/2025 | 56.14100(a) | Non-S&S | ModNegligence | $151 |
| 07/08/2025 | Non-S&S | $0 | ||
| 07/08/2025 | 56.9317 | S&S | HighNegligence | $5,716 |
| 04/10/2025 | 56.12008 | Non-S&S | ModNegligence | $366 |
| 04/10/2025 | 56.11012 | Non-S&S | ModNegligence | $151 |
| 10/08/2024 | 56.12008 | Non-S&S | ModNegligence | $147 |
| 10/08/2024 | 56.4201(a)(2) | Non-S&S | LowNegligence | $147 |
| 10/07/2024 | 46.7 | Non-S&S | LowNegligence | $147 |
| 10/07/2024 | 56.12032 | Non-S&S | ModNegligence | $147 |
| 07/10/2024 | 56.11002 | Non-S&S | ModNegligence | $147 |
| 07/10/2024 | 56.11001 | Non-S&S | ModNegligence | $147 |
| 07/10/2024 | 56.12021 | Non-S&S | ModNegligence | $147 |
| 07/08/2024 | 56.9315 | Non-S&S | ModNegligence | $147 |
| 03/13/2024 | 56.12004 | Non-S&S | ModNegligence | $147 |
| 03/13/2024 | 56.12004 | Non-S&S | ModNegligence | $147 |
| 03/12/2024 | 56.14109(b)(3) | Non-S&S | ModNegligence | $147 |
| 03/12/2024 | 56.13021 | Non-S&S | ModNegligence | $147 |
Accidents & Injuries
View all 14 →| Date | Classification | Injury | Days Lost |
|---|---|---|---|
| 12/16/2024 | HANDTOOLS (NONPOWERED) | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 11/30/2024 | HANDLING OF MATERIALS | DYS AWY FRM WRK & RESTRCTD ACT | 4d lost, 4d restricted |
| 11/06/2024 | HANDLING OF MATERIALS | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 09/22/2024 | EXPLOSIVES AND BREAKING AGENTS | DAYS AWAY FROM WORK ONLY | 23d lost |
| 04/23/2024 | HANDTOOLS (NONPOWERED) | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 03/27/2023 | HANDLING OF MATERIALS | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 03/26/2023 | HANDTOOLS (NONPOWERED) | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 02/15/2023 | HANDLING OF MATERIALS | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 07/29/2022 | SLIP OR FALL OF PERSON | DAYS RESTRICTED ACTIVITY ONLY | 20d restricted |
| 06/09/2022 | POWERED HAULAGE | DYS AWY FRM WRK & RESTRCTD ACT | 10d lost, 81d restricted |
Inspections
View all 20 →| Begin | End | Hours | Inspectors |
|---|---|---|---|
| 11/12/2025 | 11/14/2025 | 24.00 | 1 |
| 04/10/2025 | 07/09/2025 | 27.25 | 1 |
| 10/07/2024 | 10/08/2024 | 2.25 | 1 |
| 10/07/2024 | 10/08/2024 | 17.75 | 1 |
| 08/06/2024 | 08/06/2024 | 0.00 | 0 |
| 07/10/2024 | 07/10/2024 | 0.00 | 0 |
| 07/08/2024 | 07/08/2024 | 0.00 | 0 |
| 03/12/2024 | 03/13/2024 | 17.00 | 1 |
| 07/17/2023 | 07/17/2023 | 0.25 | 1 |
| 07/04/2023 | 07/05/2023 | 27.00 | 1 |
Mine Details
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Frequently Asked Questions
How many MSHA violations does Alpine Silica-San Antonio have?
Alpine Silica-San Antonio has 70 MSHA violations on record, of which 14 are classified as Significant & Substantial (S&S). Total proposed penalties amount to $21K.
What type of mine is Alpine Silica-San Antonio?
Alpine Silica-San Antonio is a Surface mine producing Nonmetal, located in San Antonio, Bexar County, TX. It currently has 25 employees.
Has anyone been injured or killed at Alpine Silica-San Antonio?
According to MSHA records, Alpine Silica-San Antonio has 14 reported accident/injury records and 0 fatalities on file.
Who operates Alpine Silica-San Antonio?
Alpine Silica-San Antonio is operated by Alpine Silica, LLC and controlled by Pro Frac Holding Corp. MSHA Mine ID: 4105426.