Data / Mines / Pennsylvania / Nonmetal mines
Nonmetal mineral mines in Pennsylvania: 15 open mines
MSHA lists 15 open nonmetal mineral mines in Pennsylvania, run by 14 operators and employing 140 people. Since January 1, 2022 its inspectors issued 108 citations and orders there with $16,822 in proposed penalties, and operators reported 27 injury or illness cases. The operators with the most open mines are Glen-Gery Corporation; U.S. Silica Company, LLC; Asbury Advanced Materials. Data from MSHA, November 6, 2026.
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- Open mines
- 15
- Operators
- 14
- Employees
- 140
- Active
- 11
- Intermittent
- 3
- Temporarily Idled
- 1
- Mines run by individuals, counted and not listed
- 1
- Citations and orders since January 1, 2022
- 108
- Significant and substantial
- 8 (7.4%)
- Closure orders
- 2
- High negligence or reckless
- 4
- Proposed penalties
- $16,822
- Amount paid so far
- $16,362
- Inspections
- 141
- Inspector hours on site
- 1,246
- Citations per inspection
- 0.77 (all mines 2.30)
- Accident reports
- 28
- Injury and illness cases
- 27
- Fatalities
- 0
- Latest MSHA record
- October 27, 2026
Operators with the most open mines in Pennsylvania
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 |
|---|---|---|---|---|---|
| Glen-Gery Corporation | 2 | 9 | 10 | $1,478 | 0 |
| U.S. Silica Company, LLC | 1 | 42 | 27 | $4,712 | 5 |
| Asbury Advanced Materials | 1 | 50 | 17 | $2,844 | 20 |
| Three Rivers Aggregates LLC | 1 | 5 | 11 | $1,645 | 1 |
| Allan Myers Materials Inc | 1 | 5 | 8 | $1,178 | 0 |
| Airport Sand & Gravel Co Inc | 1 | 1 | 7 | $1,005 | 0 |
| Wissahickon Stone Quarry, LLC | 1 | 3 | 7 | $889 | 1 |
| New Enterprise Stone and Lime Co., Inc. | 1 | 5 | 6 | $900 | 0 |
| DeCristo Inc. | 1 | 4 | 4 | $600 | 0 |
| Allan Myers Materials | 1 | 8 | 3 | $453 | 0 |
| McAvoy Brick Company | 1 | 1 | 1 | $151 | 0 |
| Schell Building and Landscaping Stone Inc. | 1 | 5 | 1 | $133 | 0 |
| Frantz Bros Inc | 1 | 1 | 0 | $0 | 0 |
Operators with the most citations in Pennsylvania
Citations and orders issued since January 1, 2022 at their open mines here.
| Operator | Open mines | Employees | Citations since 2022 | Proposed penalties | Injury cases |
|---|---|---|---|---|---|
| U.S. Silica Company, LLC | 1 | 42 | 27 | $4,712 | 5 |
| Asbury Advanced Materials | 1 | 50 | 17 | $2,844 | 20 |
| Three Rivers Aggregates LLC | 1 | 5 | 11 | $1,645 | 1 |
| Glen-Gery Corporation | 2 | 9 | 10 | $1,478 | 0 |
| Allan Myers Materials Inc | 1 | 5 | 8 | $1,178 | 0 |
| Airport Sand & Gravel Co Inc | 1 | 1 | 7 | $1,005 | 0 |
| Wissahickon Stone Quarry, LLC | 1 | 3 | 7 | $889 | 1 |
| New Enterprise Stone and Lime Co., Inc. | 1 | 5 | 6 | $900 | 0 |
| DeCristo Inc. | 1 | 4 | 4 | $600 | 0 |
| Allan Myers Materials | 1 | 8 | 3 | $453 | 0 |
| McAvoy Brick Company | 1 | 1 | 1 | $151 | 0 |
| Schell Building and Landscaping Stone Inc. | 1 | 5 | 1 | $133 | 0 |
| Frantz Bros Inc | 1 | 1 | 0 | $0 | 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 |
|---|---|---|---|---|---|
| Mapleton Depot Plant | U.S. Silica Company, LLC | Huntingdon County, PA | Sand, industrial | 42 | 27 |
| Asbury Sunbury | Asbury Advanced Materials | Northumberland County, PA | Graphite | 50 | 17 |
| Wampum | Three Rivers Aggregates LLC | Lawrence County, PA | Sand, industrial | 5 | 11 |
| Glen-Gery Corporation, Pittsburgh Plant | Glen-Gery Corporation | Allegheny County, PA | Fire clay | 3 | 9 |
| Allan Myers Portable | Allan Myers Materials Inc | Lancaster County, PA | Soapstone, crushed dimension | 5 | 8 |
| Wissahickon Stone Quarry | Wissahickon Stone Quarry, LLC | Montgomery County, PA | Mica | 3 | 7 |
| Nicholson Pit | Airport Sand & Gravel Co Inc | Wyoming County, PA | Sand, industrial | 1 | 7 |
| Narvon Minerals | New Enterprise Stone and Lime Co., Inc. | Lancaster County, PA | Fire clay | 5 | 6 |
| Tioga County Quarry | DeCristo Inc. | Tioga County, PA | Sand, industrial | 4 | 4 |
| Cedar Hill Quarry | Allan Myers Materials | Lancaster County, PA | Soapstone, crushed dimension | 8 | 3 |
| Hanley Plant Quarries | Glen-Gery Corporation | Jefferson County, PA | Common clays | 6 | 1 |
| Schell Quarry | Schell Building and Landscaping Stone Inc. | Schuylkill County, PA | Sand, industrial | 5 | 1 |
| McAvoy Vitrified Brick Company | McAvoy Brick Company | Chester County, PA | Common shale | 1 | 1 |
| Kunkletown Clay Pit | Frantz Bros Inc | Monroe County, PA | Common clays | 1 | 0 |
Main commodities
| Main commodity | Open mines | Share |
|---|---|---|
| Sand, industrial | 5 | 33.3% |
| Soapstone, crushed dimension | 2 | 13.3% |
| Common shale | 2 | 13.3% |
| Fire clay | 2 | 13.3% |
| Common clays | 2 | 13.3% |
| Mica | 1 | 6.7% |
| Graphite | 1 | 6.7% |
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 | 25 | 2 | $4,328 | 4 |
| 2023 | 22 | 1 | $3,314 | 5 |
| 2024 | 16 | 1 | $2,972 | 4 |
| 2025 | 15 | 0 | $2,265 | 7 |
| 2026 | 30 | 4 | $3,943 | 7 |
Standards cited most at nonmetal mineral mines in Pennsylvania
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 50.30 | Reporting of accidents, injuries and illnesses | 17 |
| 30 CFR 56.14132 | Surface metal and nonmetal mines | 8 |
| 30 CFR 56.14100 | Surface metal and nonmetal mines | 8 |
| 30 CFR 56.4201 | Surface metal and nonmetal mines | 6 |
| 30 CFR 56.14107 | Surface metal and nonmetal mines | 6 |
| 30 CFR 56.12028 | Surface metal and nonmetal mines | 5 |
| 30 CFR 56.12004 | Surface metal and nonmetal mines | 4 |
| 30 CFR 56.12030 | Surface metal and nonmetal mines | 4 |
| 30 CFR 56.4104 | Surface metal and nonmetal mines | 3 |
| 30 CFR 56.18002 | Surface metal and nonmetal mines | 3 |
| 30 CFR 56.4101 | Surface metal and nonmetal mines | 3 |
| 30 CFR 47.44 | Hazard communication | 3 |
| 30 CFR 56.12032 | Surface metal and nonmetal mines | 2 |
| 30 CFR 56.14112 | Surface metal and nonmetal mines | 2 |
| 30 CFR 56.12019 | Surface metal and nonmetal mines | 1 |
Injury and illness cases at nonmetal mineral mines in Pennsylvania
Accident reports by degree of injury, as the operator reported them to MSHA.
| Degree | Cases |
|---|---|
| Days away from work or restricted activity | 21 |
| No lost time, or an occupational illness | 6 |
What the accident reports at nonmetal mineral mines in Pennsylvania describe
Accident classification, as MSHA codes the circumstances that contributed most directly.
| Classification | Reports |
|---|---|
| Handtools (nonpowered) | 8 |
| Machinery | 5 |
| Slip or fall of person | 5 |
| Handling of materials | 5 |
| Other | 1 |
| Disorders (repeated trauma) | 1 |
| Falling/sliding/rolling materials | 1 |
| Powered haulage | 1 |
| Striking or bumping | 1 |
Equipment named in accident reports at nonmetal mineral mines in Pennsylvania
| Equipment | Reports |
|---|---|
| Hand tools (not powered) | 9 |
| Hand tools (powered) | 3 |
| Packaging machine | 2 |
| Forklift | 2 |
| Dimension stone machinery | 1 |
| Mill | 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.