Data / Mines / Texas / San Pedro Quarry
San Pedro Quarry, Bexar County, Texas: 6 MSHA citations
Updated November 6, 2026. Source: US Department of Labor, Mine Safety and Health Administration (MSHA), Open Government Data Sets.
San Pedro Quarry is an active crushed, broken limestone surface mine in Bexar County, Texas, operated by Martin Marietta Materials Southwest, LLC with 12 employees on MSHA's record (mine ID 4101337). Since January 1, 2022 MSHA inspectors issued 6 citations and orders there with $1,002 in proposed penalties, and 0 accident reports were filed there, with no injury or illness cases.
The request: Watch San Pedro Quarry (MSHA mine ID 4101337) in Bexar County, Texas: each new citation and each accident report. $10 of work on sign-up, no card.
SpecStream is the live web data engine for teams and agents. It reads the mine, citation, inspection and accident files that MSHA publishes, and this page is that reading. Ask for the mines of a commodity, state or operator with the operator's headquarters, website and size added from the web, and new mines, new citations and new accident reports arrive in your sheet, CRM, Slack or agent as MSHA posts them.
- MSHA mine ID
- 4101337
- Status
- Active since May 17, 2010
- Main commodity
- Crushed, broken limestone
- Mine type
- Surface
- County
- Bexar County, Texas
- Nearest town
- San Antonio
- Operator
- Martin Marietta Materials Southwest, LLC
- Parent company
- Martin Marietta Materials Inc
- Employees
- 12
- MSHA field office
- San Antonio TX Field Office
- Citations and orders since January 1, 2022
- 6
- Significant and substantial
- 1 (16.7%)
- Closure orders
- 0
- High negligence or reckless
- 1
- Proposed penalties
- $1,002
- Amount paid so far
- $1,002
- Inspections
- 10
- Inspector hours on site
- 68
- Citations per inspection
- 0.60 (all mines 2.30)
- Accident reports
- 0
- Injury and illness cases
- 0
- Fatalities
- 0
- Latest MSHA record
- August 14, 2026
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 | 2 | 1 | $406 | 0 |
| 2023 | 1 | 0 | $147 | 0 |
| 2024 | 1 | 0 | $147 | 0 |
| 2025 | 1 | 0 | $151 | 0 |
| 2026 | 1 | 0 | $151 | 0 |
Standards cited most at San Pedro Quarry
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 56.14132 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.12018 | Surface metal and nonmetal mines | 1 |
| 30 CFR 46.3 | Training at sand, gravel and surface stone mines | 1 |
| 30 CFR 56.12004 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.20003 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.15004 | Surface metal and nonmetal mines | 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 |
| 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 |
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.