Data / Mines / Texas / Mobile Crusher #1
Mobile Crusher #1, Hidalgo County, Texas: 39 MSHA citations
Updated November 6, 2026. Source: US Department of Labor, Mine Safety and Health Administration (MSHA), Open Government Data Sets.
Mobile Crusher #1 is an active crushed, broken limestone surface mine in Hidalgo County, Texas, operated by Frontera Materials Inc with 10 employees on MSHA's record (mine ID 4103291). Since January 1, 2022 MSHA inspectors issued 39 citations and orders there with $9,758 in proposed penalties, and 0 accident reports were filed there, with no injury or illness cases.
The request: Watch Mobile Crusher #1 (MSHA mine ID 4103291) in Hidalgo County, Texas: each new citation and each accident report. $10 of work on sign-up, no card.
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- MSHA mine ID
- 4103291
- Status
- Active since April 21, 2004
- Main commodity
- Crushed, broken limestone
- Mine type
- Surface
- County
- Hidalgo County, Texas
- Nearest town
- Linn
- Operator
- Frontera Materials Inc
- Employees
- 10
- MSHA field office
- San Antonio TX Field Office
- Citations and orders since January 1, 2022
- 39
- Significant and substantial
- 8 (20.5%)
- Closure orders
- 0
- High negligence or reckless
- 1
- Proposed penalties
- $9,758
- Amount paid so far
- $9,758
- Inspections
- 15
- Inspector hours on site
- 68
- Citations per inspection
- 2.60 (all mines 2.30)
- Accident reports
- 0
- Injury and illness cases
- 0
- Fatalities
- 0
- Latest MSHA record
- October 30, 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 | 10 | 4 | $1,395 | 0 |
| 2023 | 9 | 2 | $4,404 | 0 |
| 2024 | 6 | 1 | $2,133 | 0 |
| 2025 | 11 | 1 | $1,675 | 0 |
| 2026 | 3 | 0 | $151 | 0 |
Standards cited most at Mobile Crusher #1
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 56.14100 | Surface metal and nonmetal mines | 5 |
| 30 CFR 56.14101 | Surface metal and nonmetal mines | 3 |
| 30 CFR 56.14132 | Surface metal and nonmetal mines | 3 |
| 30 CFR 56.9300 | Surface metal and nonmetal mines | 2 |
| 30 CFR 56.12032 | Surface metal and nonmetal mines | 2 |
| 30 CFR 56.14112 | Surface metal and nonmetal mines | 2 |
| 30 CFR 46.3 | Training at sand, gravel and surface stone mines | 2 |
| 30 CFR 47.44 | Hazard communication | 1 |
| 30 CFR 50.30 | Reporting of accidents, injuries and illnesses | 1 |
| 30 CFR 56.14107 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.12013 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.18002 | Surface metal and nonmetal mines | 1 |
| 30 CFR 41.20 | Notice of legal identity | 1 |
| 30 CFR 56.12004 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.12018 | Surface metal and nonmetal mines | 1 |
Other open mines in Hidalgo County, Texas
| Mine | Operator | County | Main commodity | Employees | Citations since 2022 |
|---|---|---|---|---|---|
| Texan Pit | Filegonia Aggregates LLC | Hidalgo County, TX | Sand, common | 6 | 64 |
| Mobile Crusher #3 Frontera Materials | Frontera Materials Inc | Hidalgo County, TX | Crushed, broken stone | 11 | 52 |
| The Bandit Pit | Hard Rock Pit | Hidalgo County, TX | Sand, common | 6 | 51 |
| Mile 4 Pit | Filegonia Aggregates LLC | Hidalgo County, TX | Construction sand and gravel | 6 | 49 |
| Tabasco Pit | Capa | Hidalgo County, TX | Construction sand and gravel | 27 | 39 |
| La Havana Pit | Terra Firma Materials LLC | Hidalgo County, TX | Crushed, broken limestone | 3 | 33 |
| Perales Pit | Perales Pit LLC | Hidalgo County, TX | Sand, common | 7 | 25 |
| El Pinto Pit | Capa | Hidalgo County, TX | Sand, common | 10 | 20 |
| Alvarez Pit | Rio Grande Aggregates LLC | Hidalgo County, TX | Construction sand and gravel | 4 | 8 |
| Iron Rock Starr 1 | Iron Rock Aggregates JV | Hidalgo County, TX | Construction sand and gravel | 4 | 7 |
| Portable Crusher #2 | Martin Marietta Materials Southwest, LLC | Hidalgo County, TX | Crushed, broken limestone | 8 | 6 |
| San Manuel Pit | Terra Firma Materials LLC | Hidalgo County, TX | Construction sand and gravel | 7 | 6 |
| Carrales Plant | Frontera Materials Inc | Hidalgo County, TX | Sand, common | 5 | 4 |
| Cozad Pit | Frontera Materials Inc | Hidalgo County, TX | Construction sand and gravel | 5 | 0 |
| Portable Crusher HTX | Martin Marietta Materials Southwest, LLC | Hidalgo County, TX | Not stated | 0 | 0 |
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.