Data / Mines / Texas / Alpine Silica-San Antonio
Alpine Silica-San Antonio: 42 MSHA citations
Updated November 6, 2026. Source: US Department of Labor, Mine Safety and Health Administration (MSHA), Open Government Data Sets.
Alpine Silica-San Antonio is an active sand, industrial surface mine in Bexar County, Texas, operated by Alpine Silica, LLC with 25 employees on MSHA's record (mine ID 4105426). Since January 1, 2022 MSHA inspectors issued 42 citations and orders there with $9,657 in proposed penalties, and 14 accident reports were filed there, with 14 injury or illness cases, 1 of them fatal.
The request: Watch Alpine Silica-San Antonio (MSHA mine ID 4105426) in Bexar County, Texas: each new citation and each accident report. $10 of work on sign-up, no card.
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- MSHA mine ID
- 4105426
- Status
- Active since October 1, 2019
- Main commodity
- Sand, industrial
- Mine type
- Surface
- County
- Bexar County, Texas
- Nearest town
- San Antonio
- Operator
- Alpine Silica, LLC
- Parent company
- Pro Frac Holding Corp
- Employees
- 25
- MSHA field office
- San Antonio TX Field Office
- Citations and orders since January 1, 2022
- 42
- Significant and substantial
- 6 (14.3%)
- Closure orders
- 1
- High negligence or reckless
- 1
- Proposed penalties
- $9,657
- Amount paid so far
- $8,309
- Inspections
- 19
- Inspector hours on site
- 238
- Citations per inspection
- 2.21 (all mines 2.30)
- Accident reports
- 14
- Injury and illness cases
- 14
- Fatalities
- 1
- Latest MSHA record
- October 13, 2026
- Citations issued to contractors here
- 18 ($8,404 proposed)
Citations and injury cases by year
Calendar years since 2022; 2026 runs to the date of the MSHA files.
| Year | Citations and orders | Significant and substantial | Proposed penalties | Injury and illness cases |
|---|---|---|---|---|
| 2022 | 6 | 3 | $3,746 | 4 |
| 2023 | 14 | 0 | $2,002 | 3 |
| 2024 | 11 | 0 | $1,617 | 5 |
| 2025 | 3 | 0 | $944 | 0 |
| 2026 | 8 | 3 | $1,348 | 2 |
Standards cited most at Alpine Silica-San Antonio
Sections of Title 30 of the Code of Federal Regulations named on the citations, with the part each belongs to.
| Standard | What the part covers | Citations |
|---|---|---|
| 30 CFR 56.12004 | Surface metal and nonmetal mines | 3 |
| 30 CFR 56.20003 | Surface metal and nonmetal mines | 3 |
| 30 CFR 46.9 | Training at sand, gravel and surface stone mines | 3 |
| 30 CFR 56.13021 | Surface metal and nonmetal mines | 2 |
| 30 CFR 56.14107 | Surface metal and nonmetal mines | 2 |
| 30 CFR 56.11027 | Surface metal and nonmetal mines | 2 |
| 30 CFR 56.14132 | Surface metal and nonmetal mines | 2 |
| 30 CFR 56.11003 | Surface metal and nonmetal mines | 2 |
| 30 CFR 56.11001 | Surface metal and nonmetal mines | 2 |
| 30 CFR 56.14109 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.12018 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.18002 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.14112 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.12023 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.9303 | Surface metal and nonmetal mines | 1 |
Injury and illness cases at Alpine Silica-San Antonio
Accident reports by degree of injury, as the operator reported them to MSHA.
| Degree | Cases |
|---|---|
| Fatality | 1 |
| Days away from work or restricted activity | 7 |
| No lost time, or an occupational illness | 6 |
What the accident reports at Alpine Silica-San Antonio describe
Accident classification, as MSHA codes the circumstances that contributed most directly.
| Classification | Reports |
|---|---|
| Handling of materials | 4 |
| Powered haulage | 3 |
| Handtools (nonpowered) | 3 |
| Slip or fall of person | 2 |
| Explosives and breaking agents | 1 |
| Other | 1 |
Equipment named in accident reports at Alpine Silica-San Antonio
| Equipment | Reports |
|---|---|
| Hand tools (not powered) | 3 |
| Man lift | 1 |
| Front-end loader | 1 |
| Pump | 1 |
| Shovel | 1 |
| Screen | 1 |
| Conveyor | 1 |
| Forklift | 1 |
Other open mines in Bexar County, Texas
| Mine | Operator | County | Main commodity | Employees | Citations since 2022 |
|---|---|---|---|---|---|
| Arepet Industries | Arepet Industries, LLC | Bexar County, TX | Sand, industrial | 20 | 121 |
| Capitol Cement Plant & Quarry | Capitol Aggregates, Inc. | Bexar County, TX | Cement | 115 | 102 |
| 1604 Quarry & Plant | Alamo Cement Company | Bexar County, TX | Cement | 138 | 53 |
| Madden Materials Madden Pit | Madden Materials | Bexar County, TX | Sand, common | 4 | 36 |
| Jarco Sands LLC | Jarco Sands LLC | Bexar County, TX | Construction sand and gravel | 8 | 35 |
| Beckmann Quarry | Martin Marietta Materials Southwest, LLC | Bexar County, TX | Crushed, broken limestone | 48 | 31 |
| Helotes Quarry | Vulcan Construction Materials, LLC | Bexar County, TX | Crushed, broken limestone | 32 | 21 |
| Barrett Base Plt | Alamo Concrete Products Company | Bexar County, TX | Crushed, broken limestone | 26 | 21 |
| G E M Materials Inc | G E M Materials Inc | Bexar County, TX | Construction sand and gravel | 7 | 20 |
| 1604 Quarry | Vulcan Construction Materials, LLC | Bexar County, TX | Crushed, broken limestone | 50 | 18 |
| Medina River Sand & Gravel | Brauntex Materials Inc | Bexar County, TX | Construction sand and gravel | 1 | 14 |
| Casares Sand Pit | Casares Sand Pit | Bexar County, TX | Construction sand and gravel | 4 | 13 |
| Huebner Road Quarry | Vulcan Construction Materials, LLC | Bexar County, TX | Crushed, broken limestone | 10 | 7 |
| Smithson Valley Quarry | Martin Marietta Materials Southwest, LLC | Bexar County, TX | Construction sand and gravel | 3 | 7 |
| Madden Materials Vision Topsoil Pit | Madden Materials | Bexar County, TX | Sand, common | 3 | 7 |
US government work, public domain. Counts come from the MSHA files published on November 6, 2026. An open mine is one MSHA lists as Active, Intermittent, New Mine, Temporarily Idled or NonProducing; 13,673 were open that day. Citations, penalties, inspections and accident reports run from January 1, 2022. A citation is an inspector's allegation and an operator can contest it; the penalty is the amount MSHA first proposed, before any contest or settlement. An operator is the legal entity MSHA assesses, and a parent company is its controller. Mines run by sole proprietors or by individuals are counted in every total and are not named. This page uses MSHA data and is not endorsed or certified by MSHA. Free to reuse with credit to SpecStream under CC BY 4.0. Spot a wrong value? Write to [email protected] with the link to this page.