Data / Mines / Pennsylvania / Duffy 1 Mine
Duffy 1 Mine, Butler County, Pennsylvania: 0 MSHA citations
Updated November 6, 2026. Source: US Department of Labor, Mine Safety and Health Administration (MSHA), Open Government Data Sets.
Duffy 1 Mine is a temporarily idled crushed, broken limestone surface mine in Butler County, Pennsylvania, operated by Neiswonger Construction, Inc. with 0 employees on MSHA's record (mine ID 3610360). Since January 1, 2022 MSHA inspectors issued 0 citations and orders there with $0 in proposed penalties, and 0 accident reports were filed there, with no injury or illness cases.
The request: Watch Duffy 1 Mine (MSHA mine ID 3610360) in Butler County, Pennsylvania: each new citation and each accident report. $10 of work on sign-up, no card.
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- MSHA mine ID
- 3610360
- Status
- Temporarily Idled since January 4, 2023
- Main commodity
- Crushed, broken limestone
- Mine type
- Surface
- County
- Butler County, Pennsylvania
- Nearest town
- Slippery Rock
- Operator
- Neiswonger Construction, Inc.
- Parent company
- Clyde Holding Inc
- Employees
- 0
- MSHA field office
- Warrendale PA Field Office
- Citations and orders since January 1, 2022
- 0
- Inspections
- 0
- Accident reports
- 0
- Injury and illness cases
- 0
- Fatalities
- 0
Other open mines in Butler County, Pennsylvania
| Mine | Operator | County | Main commodity | Employees | Citations since 2022 |
|---|---|---|---|---|---|
| Armstrong Cement & Supply Corp | Armstrong Cement & Supply Corp | Butler County, PA | Cement | 55 | 75 |
| Harrisville | Allegheny Mineral Corp | Butler County, PA | Crushed, broken limestone | 26 | 25 |
| Murrinsville Plant | Allegheny Mineral Corp | Butler County, PA | Crushed, broken limestone | 20 | 11 |
| Slippery Rock | Allegheny Mineral Corp | Butler County, PA | Crushed, broken limestone | 22 | 10 |
| Raducz Stone | Raducz Stone Corp | Butler County, PA | Dimension sandstone | 5 | 8 |
| S3243 PT 450XHD Sn:pidpt450lomt42281 | Thomas Construction Inc. | Butler County, PA | Construction sand and gravel | 3 | 8 |
| Annandale | Annandale Quarries Inc | Butler County, PA | Dimension sandstone | 10 | 5 |
| Varos Mine | Natural Sand, Co, Inc | Butler County, PA | Sand, common | 3 | 4 |
| K & a Strips | K & a Mining | Butler County, PA | Coal (bituminous) | 5 | 2 |
| Portable Plant 01 (kpi-Jci) | Allegheny Mineral Corp | Butler County, PA | Crushed, broken limestone | 3 | 0 |
| Parker | Glenn O Hawbaker Inc | Butler County, PA | Dimension limestone | 2 | 0 |
| North Washington | Allegheny Mineral Corp | Butler County, PA | Crushed, broken limestone | 1 | 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.