Data / Mines / Texas / OnCore 4
OnCore 4, Midland County, Texas: 12 MSHA citations
Updated November 6, 2026. Source: US Department of Labor, Mine Safety and Health Administration (MSHA), Open Government Data Sets.
OnCore 4 is an active construction sand and gravel surface mine in Midland County, Texas, operated by OnCore Processing LLC with 20 employees on MSHA's record (mine ID 4105638). Since January 1, 2022 MSHA inspectors issued 12 citations and orders there with $1,826 in proposed penalties, and 2 accident reports were filed there, with 2 injury or illness cases.
The request: Watch OnCore 4 (MSHA mine ID 4105638) in Midland County, Texas: each new citation and each accident report. $10 of work on sign-up, no card.
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- MSHA mine ID
- 4105638
- Status
- Active since October 2, 2023
- Main commodity
- Construction sand and gravel
- Mine type
- Surface
- County
- Midland County, Texas
- Nearest town
- Stanton
- Operator
- OnCore Processing LLC
- Parent company
- Atlas Energy Solutions Inc
- Employees
- 20
- MSHA field office
- Carlsbad NM Field Office
- Citations and orders since January 1, 2022
- 12
- Significant and substantial
- 1 (8.3%)
- Closure orders
- 0
- High negligence or reckless
- 1
- Proposed penalties
- $1,826
- Amount paid so far
- $1,675
- Inspections
- 11
- Inspector hours on site
- 96
- Citations per inspection
- 1.09 (all mines 2.30)
- Accident reports
- 2
- Injury and illness cases
- 2
- Fatalities
- 0
- Latest MSHA record
- August 12, 2026
- Citations issued to contractors here
- 3 ($417 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 | 2 | 0 | $266 | 0 |
| 2023 | 3 | 1 | $507 | 0 |
| 2024 | 1 | 0 | $147 | 1 |
| 2025 | 4 | 0 | $604 | 0 |
| 2026 | 2 | 0 | $302 | 1 |
Standards cited most at OnCore 4
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 56.14107 | Surface metal and nonmetal mines | 3 |
| 30 CFR 56.14100 | Surface metal and nonmetal mines | 2 |
| 30 CFR 56.12030 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.14112 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.12013 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.16003 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.14132 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.9300 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.20003 | Surface metal and nonmetal mines | 1 |
Injury and illness cases at OnCore 4
Accident reports by degree of injury, as the operator reported them to MSHA.
| Degree | Cases |
|---|---|
| Days away from work or restricted activity | 1 |
| No lost time, or an occupational illness | 1 |
What the accident reports at OnCore 4 describe
Accident classification, as MSHA codes the circumstances that contributed most directly.
| Classification | Reports |
|---|---|
| Handtools (nonpowered) | 1 |
| Handling of materials | 1 |
Equipment named in accident reports at OnCore 4
| Equipment | Reports |
|---|---|
| Hand tools (not powered) | 1 |
Other open mines in Midland County, Texas
| Mine | Operator | County | Main commodity | Employees | Citations since 2022 |
|---|---|---|---|---|---|
| Southwest Windstar LLC | Southwest Windstar LLC | Midland County, TX | Construction sand and gravel | 20 | 95 |
| 1379 South | NM Energy LLC | Midland County, TX | Crushed, broken stone | 5 | 49 |
| Boreland Mine | Energy In Motion US LLC | Midland County, TX | Sand, common | 8 | 45 |
| Nobles Aggregate | Permian Basin Materials Aggregate | Midland County, TX | Crushed, broken stone | 4 | 39 |
| 1379 Pit | South Texas Aggregates Inc | Midland County, TX | Crushed, broken limestone | 4 | 31 |
| Moreland Pit | Thompson Materials | Midland County, TX | Construction sand and gravel | 1 | 25 |
| Crush Materials LLC. | Crush Materials LLC. | Midland County, TX | Crushed, broken limestone | 3 | 21 |
| Nomad, Midland | Nomad Proppant Services LLC | Midland County, TX | Sand, industrial | 25 | 17 |
| Midland | Caliche Now LLC. | Midland County, TX | Crushed, broken stone | 3 | 12 |
| Portable #3 | Thompson Materials | Midland County, TX | Crushed, broken stone | 2 | 12 |
| Bar M | Thompson Materials | Midland County, TX | Crushed, broken stone | 2 | 11 |
| Crusher #4 | Jones Bros Mfg Inc | Midland County, TX | Crushed, broken stone | 4 | 5 |
| Jci FT 4250 Portable Crusher # 3 | Csa Materials Inc | Midland County, TX | Crushed, broken limestone | 8 | 3 |
| Double T | Thompson Materials | Midland County, TX | Construction sand and gravel | 2 | 3 |
| Elkins Pit | Brett Construction Company | Midland County, TX | Construction sand and gravel | 5 | 1 |
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.