Abandoned mines in Allegheny County, Pennsylvania

1. Mine openings

   shafts, adits, air shafts, portals and vertical openings: the ways into underground workings
   287 22.9%
2. Mines and surface workings

   labelled mines, open pits, strip mines, placer and hydraulic workings
   543 43.4%
3. Quarries, gravel and borrow pits

   construction-material and industrial-mineral extraction
   44 3.5%
4. Dumps, tailings, spoil and gob

   what mining left above ground
   84 6.7%
5. Mills, tipples and facilities

   processing plants and hazardous structures
   19 1.5%
6. Other reclamation problems

   highwalls, subsidence, polluted or clogged water, fires, slides and gases in OSMRE's inventory
   274 21.9%

A name is the label printed beside the symbol on the map. "First mapped" is the earliest topographic edition that shows the symbol, which bounds the feature's age from above; it is not the date it was worked. Unnamed features (most prospect pits, adits and shafts carry no label) are in the counts above but not this list.

…and 338 more problems not listed here.

Problem types carry OSMRE's priority prefix: P1 and P2 are threats to health, safety and property, P3 is environmental. A problem area is a cluster of problems reclaimed as one project; several rows can share one location.

1. 51 Development

   Surface coal · Eugene Petricca · MSHA ID 3606827
   Abandoned 1981-07-31
2. Allegheny County Mines

   Surface coal · Bologna Mining Company · MSHA ID 3606774
   Abandoned 1982-10-19
3. Allegheny Mine

   Underground coal · Penn Allegh Coal Company Inc · MSHA ID 3600984
   Abandoned 1971-06-28
4. Allegheny No 2 & Portal No 3 Mine

   Underground coal · Penn Allegh Coal Company Inc · MSHA ID 3602581
   Abandoned and Sealed 1993-10-25
5. Allegheny No 3

   Underground coal · Penn Allegh Coal Company Inc · MSHA ID 3605691
   Abandoned and Sealed 1986-07-01
6. Allegheny River Dock Incorporated

   Facility coal · Allegheny River Dock Incorporated · MSHA ID 3608485
   Abandoned 2004-02-03
7. Aloe Energy

   Surface coal · Aloe Energy Corp · MSHA ID 3608397
   Abandoned 1995-11-02
8. Aloe Strips

   Facility coal · Aloe Coal Company · MSHA ID 3600799
   Abandoned 2002-07-15
9. Apex Strip

   Surface coal · Apex Company Inc · MSHA ID 3600800
   Abandoned 1979-10-03
10. Approved Mine No 1

    Surface coal · Approved Coal Corp · MSHA ID 3608215
    Abandoned 1991-01-08
11. Armstrong No 1 Reclamation Strip

    Surface coal · Daset Mining Corp · MSHA ID 3606193
    Abandoned 1979-10-01
12. Bambarger Strip

    Surface coal · Gold Lion Mining Corp · MSHA ID 3607020
    Abandoned 1981-09-23
13. Barbara Rail Siding

    Facility coal · R P Suto Coal & Minerals Inc · MSHA ID 3607501
    Abandoned 1983-11-15
14. Bill Fiore Strip

    Surface coal · Fiore Trucking & Contracting Company · MSHA ID 3604259
    Abandoned 1978-02-16
15. Bridgeville Strip

    Surface coal · Lawrence Coal Company · MSHA ID 3605539
    Abandoned 1983-03-31
16. Burns Farm Mine

    Surface coal · Quality Aggregates · MSHA ID 3609370
    Abandoned 2012-03-22
17. CASTOR FARM MINE

    Surface coal · CASTOR FARM ASSOCIATES, INC. · MSHA ID 3609488
    Abandoned 2008-02-26
18. Central Repair Shop

    Facility coal · Consolidation Coal Company · MSHA ID 3604623
    Abandoned 1984-09-05
19. Cherep #1

    Surface coal · Cherep Excavating · MSHA ID 3607443
    Abandoned 2018-09-27
20. Cherry Mine

    Surface coal · Collier Land & Coal Development LP · MSHA ID 3609566
    Abandoned 2019-09-30
21. Christner Project

    Surface coal · Rostosky Coal, LLC · MSHA ID 3609833
    Abandoned 2017-04-04
22. Colella Strip

    Surface coal · E M Mining Company Inc · MSHA ID 3606921
    Abandoned 1984-09-05
23. Consolidation Coal Co 14-N Impoundment

    Facility coal · Consolidation Coal Company · MSHA ID 3608094
    Abandoned 2009-02-18
24. Cook Mine

    Surface coal · B & G Coal Company Inc · MSHA ID 3606665
    Abandoned 1980-01-31
25. Coraopolis Plant

    Surface metal/non-metal · Hanson Aggregates Pma Inc · MSHA ID 3608113
    Abandoned 1996-07-02
26. COSMOS CEMENT CO. PITTSBURGH

    Facility metal/non-metal · Kosmos Cement Company · MSHA ID 3606078
    Abandoned 2001-09-06
27. Coventry Park

    Surface coal · Coventry Park LLC · MSHA ID 3609681
    Abandoned 2017-04-04
28. Creighton Mine

    Underground coal · Creighton Hills Coal Company · MSHA ID 3606221
    Abandoned and Sealed 1980-09-24
29. Curtisville

    Surface metal/non-metal · Aloe Stone Company · MSHA ID 3607529
    Abandoned 1991-09-18
30. Deep Valley Strip

    Surface coal · Deep Valley Coal Company · MSHA ID 3605870
    Abandoned 1985-04-17
31. Dependable #1

    Surface coal · Dependable Coal & Construction Company Inc · MSHA ID 3606310
    Abandoned 1984-09-12
32. Duquesne Blending Facility

    Facility coal · Union Railroad Company · MSHA ID 3608395
    Abandoned 1996-05-01
33. Duquesne Strip

    Surface coal · Duquesne Slag Products Company · MSHA ID 3606206
    Abandoned 1984-09-05
34. Elizabeth Strip

    Surface coal · Mc Gal Coal Company Inc · MSHA ID 3606654
    Abandoned 1984-09-05
35. Flick Quarry And Mill

    Surface metal/non-metal · Flick Stone Company · MSHA ID 3602406
    Abandoned 1979-07-23
36. Floreffe Coal Storage

    Facility coal · Jones & Laughlin Steel Corp · MSHA ID 3604515
    Abandoned 1976-08-23
37. Gloria'S Mine

    Surface coal · Duco Enterprises Inc · MSHA ID 3607077
    Abandoned 1981-05-29
38. Gouker Operation

    Surface coal · Cobra Energy Resources · MSHA ID 3607696
    Abandoned 1995-11-27
39. Harmar Mine

    Underground coal · Harmar Coal Company · MSHA ID 3600802
    Abandoned and Sealed 1989-11-30
40. Harmer Refuge Site

    Surface coal · Ridge Energy Company Inc · MSHA ID 3610128
    Abandoned 2017-06-05
41. Hawk Perlite

    Facility metal/non-metal · Perlite Manufacturing Co Of Pittsburgh Inc · MSHA ID 3607075
    Abandoned 1982-09-30
42. HSWP Botanic Garden

    Surface coal · Mashuda Corporation · MSHA ID 3609693
    Abandoned 2011-03-24
43. HSWP Botanic Garden No. 2

    Surface coal · Mashuda Corporation · MSHA ID 3609792
    Abandoned 2018-07-31
44. Kelly Run Strip

    Surface coal · Steam Systems Sales & Service Inc · MSHA ID 3605848
    Abandoned 1978-02-16
45. Kennedy Center

    Surface coal · Richard E Lang · MSHA ID 3608285
    Abandoned 1993-03-23
46. Kiersten I

    Surface coal · M C Arnoni Company · MSHA ID 3608209
    Abandoned 1991-02-05
47. Kowalski Custom Yard

    Facility coal · Kowalski Coal · MSHA ID 3606371
    Abandoned 2005-01-13
48. Lp Synfuel Inc

    Facility coal · L P Synfuel Inc · MSHA ID 3608793
    Abandoned 2004-05-26
49. Lutz Land

    Surface coal · Lutz Land · MSHA ID 3607526
    Abandoned 1988-05-06
50. Maceral No 7

    Surface coal · Maceral Corp · MSHA ID 3606578
    Abandoned 1984-09-12
51. Margerum Strip 275-1

    Surface coal · Pittsburgh Coal Company · MSHA ID 3600985
    Abandoned 1979-10-03
52. Marion Coal Co

    Surface coal · Marion Coal Company · MSHA ID 3607102
    Abandoned 1984-09-12
53. Mateer No 4

    Underground coal · Mateer Coal Company · MSHA ID 3600804
    Abandoned and Sealed 1979-10-01
54. Maude Mine

    Underground coal · Mohawk Mining Company · MSHA ID 3607977
    Abandoned and Sealed 1996-01-11
55. Mazzarini

    Surface coal · Mazzarini Coal · MSHA ID 3607176
    Abandoned 1983-10-24
56. MC SHANE QUARRY

    Surface metal/non-metal · Collier Stone Company · MSHA ID 3606413
    Abandoned 2007-08-28
57. Milliken Brick Co Pitcairn Plant

    Facility metal/non-metal · Milliken Brick Company Inc · MSHA ID 3600654
    Abandoned 1982-05-21
58. Mine #3

    Surface coal · Xecol Corp · MSHA ID 3606857
    Abandoned 1989-10-17
59. Mine 1

    Surface coal · Teodori Enterprises · MSHA ID 3609212
    Abandoned 2017-03-27
60. Mine No 5

    Surface coal · Xecol Corp · MSHA ID 3607357
    Abandoned 1983-06-28
61. Montour #10

    Underground coal · Consolidation Coal Company · MSHA ID 3602556
    Abandoned and Sealed 1980-04-14
62. Monvalley Transportation Center Inc

    Facility coal · Mon Valley Transportation Center Inc · MSHA ID 3608678
    Abandoned 2009-04-17
63. Moon Run Mine

    Surface coal · William J Kisow · MSHA ID 3607626
    Abandoned 1988-06-15
64. Neville Manor

    Surface coal · Neville Manor Inc · MSHA ID 3608448
    Abandoned 1996-11-05
65. Newfield

    Underground coal · Plum Creek Mining Company Inc · MSHA ID 3600809
    Abandoned 1995-06-26
66. Nick Garin Strip

    Surface coal · Garin Trucking Company · MSHA ID 3605847
    Abandoned 1977-01-17
67. Nickolich Mine

    Surface coal · John P Nickolich · MSHA ID 3608230
    Abandoned 1997-03-17
68. Oakmont Mine

    Underground coal · Harmar Coal Company · MSHA ID 3600803
    Abandoned and Sealed 1980-05-01
69. Ocean #5 Mine

    Underground coal · Jedco Minerals Inc · MSHA ID 3605132
    Abandoned and Sealed 1994-04-21
70. Pangburn

    Underground coal · Reserve Coal Properties Company · MSHA ID 3606503
    Abandoned 2003-04-04
71. Paris 1

    Surface coal · Alex Paris Contracting Co., Inc. · MSHA ID 3609384
    Abandoned 2008-02-19
72. Patterson No 1 Strip

    Surface coal · Patterson Coal Company · MSHA ID 3606408
    Abandoned 1979-10-01
73. Penn Hills Development

    Surface coal · Walmart Real Estate Business Trust · MSHA ID 3610006
    Abandoned 2018-07-19
74. Penn Hills Development

    Surface coal · Wal-Mart Stores Inc · MSHA ID 3610017
    Abandoned 2018-07-19
75. Pittsburgh Project

    Surface coal · PDG Land Development, Inc. · MSHA ID 3609160
    Abandoned 2016-07-06
76. PORTABLE PLANT NO. 1

    Surface metal/non-metal · Collier Stone Company · MSHA ID 3608381
    Abandoned 1997-03-04
77. Reclamation Project No 608

    Surface coal · Anthony G Cirra · MSHA ID 3606800
    Abandoned 1980-05-22
78. Renton Mine

    Underground coal · Villa Coal Company Inc · MSHA ID 3600807
    Abandoned and Sealed 1992-10-23
79. Renton Mine

    Facility coal · Clear-Pitt Incorported · MSHA ID 3608355
    Abandoned 1997-03-06
80. Robert W Schowmaker

    Surface coal · Robert W Schomaker · MSHA ID 3607643
    Abandoned 1995-12-29
81. Robindale Energy - Renton

    Surface coal · Robindale Energy Services · MSHA ID 3609778
    Abandoned 2017-01-31
82. Robinson Town Centre

    Surface coal · Geupel Construction Company Inc · MSHA ID 3607982
    Abandoned 1988-12-05
83. Russellton

    Underground coal · Bcnr Mining Corp · MSHA ID 3600808
    Abandoned and Sealed 1989-06-30
84. Russellton Mine

    Facility coal · Allegheny Valley Resources Inc · MSHA ID 3608425
    Abandoned 1999-06-07
85. Russellton Site

    Facility coal · ACV Power Corporation · MSHA ID 3608309
    Abandoned 2003-04-04
86. Safety Research Coal Mine

    Underground coal · Prl/Niosh · MSHA ID 3602584
    Abandoned 2017-02-09
87. Saveikis Strip

    Surface coal · R A S Excavating Company · MSHA ID 3606483
    Abandoned 1984-09-12
88. Special Reclaim Project 197

    Surface coal · Duco Enterprises Inc · MSHA ID 3605895
    Abandoned 1985-06-12
89. SPRINGDALE PLANT

    Surface metal/non-metal · Lane Construction Corp · MSHA ID 3608467
    Abandoned 2001-06-28
90. Stewart Strip

    Surface coal · Wolf Run Road Coal Company · MSHA ID 3606544
    Abandoned 1980-10-01
91. Tarentum Mill

    Facility metal/non-metal · A P Green Refractories Inc · MSHA ID 3605382
    Abandoned 1982-05-21
92. Temp. Screen - Cory Yard

    Surface metal/non-metal · Hanson Aggregates BMC, Inc. · MSHA ID 3610183
    Abandoned 2016-09-27
93. Universal Plant

    Facility metal/non-metal · United States Steel Corp · MSHA ID 3602616
    Abandoned 1981-01-26
94. Villages @ Neville Park

    Surface coal · Collier Development Co Inc · MSHA ID 3609594
    Abandoned 2017-09-27
95. Warwick Strip Mine

    Surface coal · Duquesne Light Company · MSHA ID 3600801
    Abandoned 1972-06-23
96. Weiss Strip

    Surface coal · Weiss Brothers Construction Company Inc · MSHA ID 3605145
    Abandoned 1976-10-04
97. Weleski Terminals, Inc.

    Facility coal · Weleski Terminals · MSHA ID 3609156
    Abandoned 2012-05-21
98. West Mifflin

    Surface coal · Penn Sherman Corp · MSHA ID 3606441
    Abandoned 1984-09-05
99. Wildwood

    Facility coal · Acv Power Corp · MSHA ID 3605535
    Abandoned 1998-08-07

Status and date are as reported to MSHA by the operator. Each mine's own page carries its accident, citation and inspection record.

• Clearfield County 1,769
• Armstrong County 961
• Jefferson County 948
• Clarion County 943
• Butler County 920
• Westmoreland County 906
• Indiana County 897
• Somerset County 868
• Fayette County 861
• Schuylkill County 836
• Cambria County 753
• Washington County 672

1. USGS, Consolidated Prospect- and Mine-Related Features from 7.5- and 15-Minute Topographic Quadrangle Maps of the United States (USMIN)
   597,612 point and area features digitized from about 106,350 historical topographic maps published 1886–2006; public domain (CC0). A feature is a map symbol, not a field-verified site, and the map does not say whether it was still worked.
2. USGS Fact Sheet 2025–3003, The Abandoned Mine Inventory of the United States
   States that as of 2025 there is no comprehensive national inventory of abandoned mine features, and that the detailed national database now being built will not be published.
3. OSMRE, Abandoned Mine Land Inventory System (e-AMLIS), public Problems layer
   One row per abandoned mine land problem in a problem area, with its type, funding program and reclamation status; mostly coal mined before the 1977 Surface Mining Control and Reclamation Act. Coordinates are the problem area's.
4. MSHA, Mines dataset (Mine Data Retrieval System)
   Every mine registered with MSHA since the 1970s; a mine reads Abandoned or Abandoned and Sealed when its operator reported that status. Refreshed weekly.
5. US Census Bureau, 2023 cartographic county boundaries (1:500,000)
   Each feature's county is assigned by its coordinates against these boundaries, not copied from the source file.
6. GAO-20-238, Abandoned Hardrock Mines (March 2020)
   Federal agencies had identified at least 140,000 abandoned hardrock mine features on federal land and estimated more than 390,000 more not yet captured in their databases.
7. Abandoned Hardrock Mine Reclamation (AHMR) Program, US Department of the Interior
   The program the USGS inventory is compiled for. Its appropriations and the 674,000 field-confirmed feature count on this page were provided by the program manager, Office of Environmental Policy and Compliance, and are cited with permission (2026-09-08).
8. IMCC-NAAMLP Hardrock AML Report
   Page 48 carries the two figures this page leans on: USGS estimates 633,181 of the 725,690 mine features it recorded from historic topographic maps, 87 percent, are hardrock; and state and federal agencies have submitted more than 724,000 AML features to the national database being built, already more than the historic maps hold. Year-by-year AHMR funding is on page 35.