Data / Mines / Texas / Bexar County
Mines in Bexar County, Texas: 20 open mines
MSHA lists 20 open mines in Bexar County, Texas, run by 14 operators and employing 536 people. Since January 1, 2022 its inspectors issued 720 citations and orders there with $367,294 in proposed penalties, and operators reported 77 injury or illness cases, 2 of them fatal. The operators with the most open mines are Martin Marietta Materials Southwest, LLC; Vulcan Construction Materials, LLC; Madden Materials. Data from MSHA, November 6, 2026.
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- Open mines
- 20
- Operators
- 14
- Employees
- 536
- Active
- 19
- Intermittent
- 1
- Mines run by individuals, counted and not listed
- 1
- Citations and orders since January 1, 2022
- 720
- Significant and substantial
- 121 (16.8%)
- Closure orders
- 21
- High negligence or reckless
- 48
- Proposed penalties
- $367,294
- Amount paid so far
- $316,275
- Inspections
- 320
- Inspector hours on site
- 3,202
- Citations per inspection
- 2.25 (all mines 2.30)
- Accident reports
- 83
- Injury and illness cases
- 77
- Fatalities
- 2
- Latest MSHA record
- November 5, 2026
Operators with the most open mines in Bexar County, Texas
Ranked by open mines, then by citations. Sole proprietors and individuals are not listed.
| Operator | Open mines | Employees | Citations since 2022 | Proposed penalties | Injury cases |
|---|---|---|---|---|---|
| Martin Marietta Materials Southwest, LLC | 4 | 71 | 48 | $9,057 | 2 |
| Vulcan Construction Materials, LLC | 3 | 92 | 46 | $9,429 | 14 |
| Madden Materials | 2 | 7 | 43 | $19,239 | 0 |
| Arepet Industries, LLC | 1 | 20 | 121 | $121,795 | 4 |
| Capitol Aggregates, Inc. | 1 | 115 | 102 | $29,353 | 11 |
| Alamo Cement Company | 1 | 138 | 53 | $10,454 | 19 |
| Alpine Silica, LLC | 1 | 25 | 42 | $9,657 | 14 |
| Jarco Sands LLC | 1 | 8 | 35 | $7,229 | 1 |
| Alamo Concrete Products Company | 1 | 26 | 21 | $6,181 | 6 |
| G E M Materials Inc | 1 | 7 | 20 | $3,174 | 0 |
| Brauntex Materials Inc | 1 | 1 | 14 | $2,058 | 0 |
| Casares Sand Pit | 1 | 4 | 13 | $1,828 | 0 |
| Zachry Construction Corp | 1 | 3 | 3 | $441 | 0 |
Operators with the most citations in Bexar County, Texas
Citations and orders issued since January 1, 2022 at their open mines here.
| Operator | Open mines | Employees | Citations since 2022 | Proposed penalties | Injury cases |
|---|---|---|---|---|---|
| Arepet Industries, LLC | 1 | 20 | 121 | $121,795 | 4 |
| Capitol Aggregates, Inc. | 1 | 115 | 102 | $29,353 | 11 |
| Alamo Cement Company | 1 | 138 | 53 | $10,454 | 19 |
| Martin Marietta Materials Southwest, LLC | 4 | 71 | 48 | $9,057 | 2 |
| Vulcan Construction Materials, LLC | 3 | 92 | 46 | $9,429 | 14 |
| Madden Materials | 2 | 7 | 43 | $19,239 | 0 |
| Alpine Silica, LLC | 1 | 25 | 42 | $9,657 | 14 |
| Jarco Sands LLC | 1 | 8 | 35 | $7,229 | 1 |
| Alamo Concrete Products Company | 1 | 26 | 21 | $6,181 | 6 |
| G E M Materials Inc | 1 | 7 | 20 | $3,174 | 0 |
| Brauntex Materials Inc | 1 | 1 | 14 | $2,058 | 0 |
| Casares Sand Pit | 1 | 4 | 13 | $1,828 | 0 |
| Zachry Construction Corp | 1 | 3 | 3 | $441 | 0 |
Mines with the most citations
Open mines, ranked by citations and orders since January 1, 2022.
| 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 |
| Alpine Silica-San Antonio | Alpine Silica, LLC | Bexar County, TX | Sand, industrial | 25 | 42 |
| 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 |
| San Pedro Quarry | Martin Marietta Materials Southwest, LLC | Bexar County, TX | Crushed, broken limestone | 12 | 6 |
| 211 Quarry | Martin Marietta Materials Southwest, LLC | Bexar County, TX | Crushed, broken limestone | 8 | 4 |
| ZCC Capitol Screening Operation | Zachry Construction Corp | Bexar County, TX | Construction sand and gravel | 3 | 3 |
Main commodities
| Main commodity | Open mines | Share |
|---|---|---|
| Crushed, broken limestone | 7 | 35% |
| Construction sand and gravel | 6 | 30% |
| Sand, industrial | 3 | 15% |
| Cement | 2 | 10% |
| Sand, common | 2 | 10% |
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 | 153 | 28 | $110,385 | 20 |
| 2023 | 280 | 59 | $140,654 | 17 |
| 2024 | 118 | 14 | $76,736 | 22 |
| 2025 | 89 | 8 | $17,416 | 7 |
| 2026 | 80 | 12 | $22,103 | 11 |
Standards cited most at mines in Bexar County, Texas
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 56.20003 | Surface metal and nonmetal mines | 61 |
| 30 CFR 56.14100 | Surface metal and nonmetal mines | 60 |
| 30 CFR 56.14107 | Surface metal and nonmetal mines | 46 |
| 30 CFR 56.12032 | Surface metal and nonmetal mines | 41 |
| 30 CFR 56.12004 | Surface metal and nonmetal mines | 32 |
| 30 CFR 56.4201 | Surface metal and nonmetal mines | 29 |
| 30 CFR 56.12008 | Surface metal and nonmetal mines | 25 |
| 30 CFR 56.18002 | Surface metal and nonmetal mines | 24 |
| 30 CFR 56.12018 | Surface metal and nonmetal mines | 22 |
| 30 CFR 56.14132 | Surface metal and nonmetal mines | 19 |
| 30 CFR 56.12028 | Surface metal and nonmetal mines | 19 |
| 30 CFR 56.14112 | Surface metal and nonmetal mines | 17 |
| 30 CFR 56.11003 | Surface metal and nonmetal mines | 14 |
| 30 CFR 56.11001 | Surface metal and nonmetal mines | 13 |
| 30 CFR 56.4200 | Surface metal and nonmetal mines | 13 |
Injury and illness cases at mines in Bexar County, Texas
Accident reports by degree of injury, as the operator reported them to MSHA.
| Degree | Cases |
|---|---|
| Fatality | 2 |
| Days away from work or restricted activity | 53 |
| No lost time, or an occupational illness | 22 |
What the accident reports at mines in Bexar County, Texas describe
Accident classification, as MSHA codes the circumstances that contributed most directly.
| Classification | Reports |
|---|---|
| Handling of materials | 29 |
| Slip or fall of person | 15 |
| Handtools (nonpowered) | 9 |
| Machinery | 9 |
| Powered haulage | 6 |
| Other | 6 |
| Entrapment | 4 |
| Fire | 1 |
| Disorders (physical agents) | 1 |
| Falling/sliding/rolling materials | 1 |
Equipment named in accident reports at mines in Bexar County, Texas
| Equipment | Reports |
|---|---|
| Hand tools (not powered) | 10 |
| Elevator | 4 |
| Front-end loader | 3 |
| Hand tools (powered) | 2 |
| Welding machine | 2 |
| Crane | 1 |
| Shuttle car | 1 |
| Scraper loader | 1 |
| Trucks | 1 |
| Milling machinery | 1 |
Updated November 6, 2026. Read from US Department of Labor, Mine Safety and Health Administration (MSHA), Open Government Data Sets. 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.