Data / Mines / Clyde Holding Inc
Clyde Holding Inc: 9 open mines, 513 MSHA citations
Clyde Holding Inc (MSHA controller ID 0152361) controls 9 open mines through 4 operators, with 99 employees in 2 states, mostly crushed, broken limestone. Since January 1, 2022 MSHA issued 513 citations and orders at those mines with $1,575,698 in proposed penalties, and operators reported 8 injury or illness cases, 1 of them fatal. Data from MSHA, November 6, 2026.
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- MSHA controller ID
- 0152361
- Open mines
- 9
- Operators
- 4
- Employees
- 99
- States
- 2
- Citations and orders since January 1, 2022
- 513
- Significant and substantial
- 126 (24.6%)
- Closure orders
- 45
- High negligence or reckless
- 66
- Proposed penalties
- $1,575,698
- Amount paid so far
- $272,876
- Inspections
- 136
- Inspector hours on site
- 1,901
- Citations per inspection
- 3.77 (all mines 2.30)
- Accident reports
- 8
- Injury and illness cases
- 8
- Fatalities
- 1
- Latest MSHA record
- September 30, 2026
Operators under Clyde Holding Inc
Mines with the most citations
| Mine | Operator | County | Main commodity | Employees | Citations since 2022 |
|---|
| Romesburg Quarry | Garrett Limestone Company Inc | Somerset County, PA | Crushed, broken limestone | 13 | 189 |
| Sewickley Mine | Neiswonger Construction, Inc. | Indiana County, PA | Crushed, broken stone | 6 | 128 |
| Maggie Lynn Quarry | Neiswonger Construction, Inc. | Washington County, PA | Crushed, broken limestone | 11 | 61 |
| Stitt Mine | Buffalo Limestone Inc | Armstrong County, PA | Crushed, broken limestone | 20 | 55 |
| Mascharka Mine | Neiswonger Construction, Inc. | Clarion County, PA | Crushed, broken limestone | 12 | 41 |
| Bowser Mine | Neiswonger Construction, Inc. | Clarion County, PA | Coal (bituminous) | 2 | 17 |
| Egypt Valley Stone | Egypt Valley Stone | Belmont County, OH | Crushed, broken limestone | 32 | 16 |
| Sandy Plains | Neiswonger Construction, Inc. | Washington County, PA | Crushed, broken sandstone | 3 | 6 |
| Duffy 1 Mine | Neiswonger Construction, Inc. | Butler County, PA | Crushed, broken limestone | 0 | 0 |
States
Commodities
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 | 81 | 13 | $18,540 | 0 |
| 2023 | 210 | 65 | $901,902 | 5 |
| 2024 | 124 | 22 | $606,000 | 1 |
| 2025 | 73 | 21 | $44,391 | 1 |
| 2026 | 25 | 5 | $4,865 | 1 |
Standards cited most at mines controlled by Clyde Holding Inc
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 57.14100 | Underground metal and nonmetal mines | 31 |
| 30 CFR 56.14100 | Surface metal and nonmetal mines | 29 |
| 30 CFR 56.14107 | Surface metal and nonmetal mines | 20 |
| 30 CFR 56.11001 | Surface metal and nonmetal mines | 20 |
| 30 CFR 56.4201 | Surface metal and nonmetal mines | 17 |
| 30 CFR 47.44 | Hazard communication | 17 |
| 30 CFR 56.20003 | Surface metal and nonmetal mines | 16 |
| 30 CFR 57.20003 | Underground metal and nonmetal mines | 14 |
| 30 CFR 57.11001 | Underground metal and nonmetal mines | 12 |
| 30 CFR 56.9300 | Surface metal and nonmetal mines | 11 |
| 30 CFR 56.18002 | Surface metal and nonmetal mines | 11 |
| 30 CFR 57.14101 | Underground metal and nonmetal mines | 11 |
| 30 CFR 56.4104 | Surface metal and nonmetal mines | 10 |
| 30 CFR 56.12004 | Surface metal and nonmetal mines | 10 |
| 30 CFR 56.14132 | Surface metal and nonmetal mines | 9 |
Injury and illness cases at mines controlled by Clyde Holding Inc
Accident reports by degree of injury, as the operator reported them to MSHA.
| Degree | Cases |
|---|
| Fatality | 1 |
| Days away from work or restricted activity | 5 |
| No lost time, or an occupational illness | 2 |
What the accident reports at mines controlled by Clyde Holding Inc describe
Accident classification, as MSHA codes the circumstances that contributed most directly.
| Classification | Reports |
|---|
| Powered haulage | 2 |
| Handtools (nonpowered) | 2 |
| Handling of materials | 1 |
| Machinery | 1 |
| Slip or fall of person | 1 |
| Fire | 1 |
Equipment named in accident reports at mines controlled by Clyde Holding Inc
| Equipment | Reports |
|---|
| Front-end loader | 2 |
| Ore haulage trucks - off highway trucks | 2 |
| Hand tools (not powered) | 2 |
| Conveyor | 1 |
| Man lift | 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.