Abandoned mines in Susquehanna County, Pennsylvania

1. Mine openings

   shafts, adits, air shafts, portals and vertical openings: the ways into underground workings
   3 0.5%
2. Mines and surface workings

   labelled mines, open pits, strip mines, placer and hydraulic workings
   37 6.1%
3. Quarries, gravel and borrow pits

   construction-material and industrial-mineral extraction
   563 92.6%
4. Dumps, tailings, spoil and gob

   what mining left above ground
   3 0.5%
5. Other reclamation problems

   highwalls, subsidence, polluted or clogged water, fires, slides and gases in OSMRE's inventory
   2 0.3%

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. #4 North

   Surface metal/non-metal · DH Manufacturing LLC · MSHA ID 3609174
   Abandoned 2024-06-20
2. 858 QUARRY

   Surface metal/non-metal · SALSMAN · MSHA ID 3609829
   Abandoned 2024-12-09
3. A-K Portable

   Surface metal/non-metal · Wayne Knopick · MSHA ID 3609858
   Abandoned 2012-09-05
4. Adams Stone Company

   Surface metal/non-metal · Adams Stone Company · MSHA ID 3609835
   Abandoned 2012-08-14
5. Alford Quarry

   Surface metal/non-metal · Theodore S Kilmer · MSHA ID 3607951
   Abandoned 1992-09-24
6. Alfrod Quarry

   Surface metal/non-metal · Sandy Kilmer Quarries · MSHA ID 3609452
   Abandoned 2012-11-02
7. Allen Quarry

   Surface metal/non-metal · Paul Bennett & Sons · MSHA ID 3608742
   Abandoned 2024-08-14
8. APPLE HILL

   Surface metal/non-metal · R & M Stone · MSHA ID 3608869
   Abandoned 2003-12-24
9. Arnold Natural Stone Products

   Surface metal/non-metal · Arnold Natural Stone Products · MSHA ID 3609777
   Abandoned 2009-07-03
10. Arnold Quarry

    Surface metal/non-metal · Nittany Nova Aggregates · MSHA ID 3610176
    Abandoned 2016-10-05
11. Arrowhead

    Surface metal/non-metal · Arrowhead Quarries · MSHA ID 3609277
    Abandoned 2006-10-26
12. Avilo Portable

    Surface metal/non-metal · Avilo Portable · MSHA ID 3609834
    Abandoned 2014-10-06
13. AYERS #1

    Surface metal/non-metal · Ayers Quarries · MSHA ID 3609035
    Abandoned 2002-09-11
14. B & B Quarry

    Surface metal/non-metal · Balmer Flagstone · MSHA ID 3609870
    Abandoned 2011-08-08
15. B & S Quarry

    Surface metal/non-metal · Ely's Stone · MSHA ID 3609220
    Abandoned 2014-04-23
16. B. Dale Kelley Flagstone

    Surface metal/non-metal · B. Dale Kelley Flagstone · MSHA ID 3609851
    Abandoned 2011-07-27
17. Barbour Quarry

    Surface metal/non-metal · Dennis Bevan · MSHA ID 3609552
    Abandoned 2008-06-18
18. BEA MACK STONE

    Surface metal/non-metal · Bea Mack · MSHA ID 3609024
    Abandoned 2003-07-24
19. Bear's Den Quarry

    Surface metal/non-metal · McGavin Stone · MSHA ID 3609008
    Abandoned 2010-08-04
20. BENNETT MINE

    Surface metal/non-metal · Stanley Bennett · MSHA ID 3608976
    Abandoned 2005-08-03
21. Bennett Quarry

    Surface metal/non-metal · Lindley Rood Flagstone Quarries · MSHA ID 3609643
    Abandoned 2010-07-09
22. Betty's Rock

    Surface metal/non-metal · Paul Van Dyke · MSHA ID 3609301
    Abandoned 2005-05-05
23. BILL ALBERT EXCAVATING

    Surface metal/non-metal · BILL ALBERT EXCAVATING · MSHA ID 3610119
    Abandoned 2026-07-16
24. Bill's Quarry

    Surface metal/non-metal · Bradley Strickland · MSHA ID 3609034
    Abandoned 2005-11-08
25. Birchard Portable

    Surface metal/non-metal · Birchard Flagstone · MSHA ID 3609537
    Abandoned 2011-08-17
26. Birchardville Quarry

    Surface metal/non-metal · R. S. Services · MSHA ID 3609964
    Abandoned 2012-01-09
27. Bishop Portable

    Surface metal/non-metal · Bishop Flage Stone · MSHA ID 3609714
    Abandoned 2011-09-06
28. BL Quarries LLC

    Surface metal/non-metal · BL Quarries LLC · MSHA ID 3609712
    Abandoned 2013-06-26
29. BLUEBECK QUARRY

    Surface metal/non-metal · Paul Kilmer · MSHA ID 3608947
    Abandoned 2002-07-23
30. BLUEBERRY QUARRY

    Surface metal/non-metal · PAUL KILMER · MSHA ID 3609049
    Abandoned 2004-04-16
31. Bluerock Natural Resources Contractor

    Surface metal/non-metal · Bluerock Natural Resources LLC · MSHA ID 3609776
    Abandoned 2010-07-26
32. Bluerock Natural Resources on Irish Hill

    Surface metal/non-metal · Bluerock Natural Resources LLC · MSHA ID 3609516
    Abandoned 2009-08-12
33. Bluestone Quarries

    Surface metal/non-metal · Bluestone Quarries · MSHA ID 3609118
    Abandoned 2006-07-12
34. BOB'S MINE

    Surface metal/non-metal · Robert A Stankiewicz · MSHA ID 3609009
    Abandoned 2003-07-17
35. Bonnice Quarry

    Surface metal/non-metal · Dave Bonnice Quarries · MSHA ID 3609079
    Abandoned 2018-08-30
36. Bonnice R-1

    Surface metal/non-metal · Robert Bonnice Sole Proprietor · MSHA ID 3609078
    Abandoned 2002-08-28
37. Braveheart Quarry

    Surface metal/non-metal · Mc Laud Flagstone · MSHA ID 3609538
    Abandoned 2012-11-05
38. BROOKDALE #2

    Surface metal/non-metal · F & K Stone · MSHA ID 3608996
    Abandoned 2004-01-07
39. Brown Quarry

    Surface metal/non-metal · Noldy Flagstone · MSHA ID 3610265
    Abandoned 2024-08-22
40. Browndale Bank

    Facility coal · Linsinbigler Coal Company · MSHA ID 3606830
    Abandoned 1983-01-04
41. Brushville and Coleman Quarries

    Surface metal/non-metal · Meshoppen Stone, Inc. · MSHA ID 3608553
    Abandoned 2023-06-27
42. BSQ II

    Surface metal/non-metal · B S Quarries Inc · MSHA ID 3609125
    Abandoned 2014-05-20
43. Buckhorn

    Surface metal/non-metal · Litts & Son Stone Company · MSHA ID 3609655
    Abandoned 2011-08-09
44. BUFF QUARRY

    Surface metal/non-metal · D B Flagstone · MSHA ID 3608946
    Abandoned 2003-05-19
45. BUTLER QUARRY

    Surface metal/non-metal · Harold L Piasecki Sr · MSHA ID 3608931
    Abandoned 2002-07-10
46. Carpenter #1

    Surface metal/non-metal · Russell Carpenter · MSHA ID 3609070
    Abandoned 2003-03-13
47. Carpenter Quarry #1

    Surface metal/non-metal · Carpenter Quarry · MSHA ID 3609397
    Abandoned 2006-07-20
48. Carter Quarry

    Surface metal/non-metal · R & R Stone · MSHA ID 3609358
    Abandoned 2012-07-18
49. Carter Quarry

    Surface metal/non-metal · John Martin · MSHA ID 3609844
    Abandoned 2012-09-07
50. CASEY #1

    Surface metal/non-metal · Vaughn Howell · MSHA ID 3608964
    Abandoned 2003-07-10
51. CASSELBURY NORTH

    Surface metal/non-metal · Ronald Opeil Flagstone Co., LLC · MSHA ID 3608953
    Abandoned 2026-05-19
52. Casselbury Portable

    Surface metal/non-metal · Casselbury Flagstone · MSHA ID 3609784
    Abandoned 2020-05-26
53. CASSELBURY QUARRY WEST

    Surface metal/non-metal · Snake Creek Stone · MSHA ID 3608954
    Abandoned 2008-10-29
54. Castlemont #1

    Surface metal/non-metal · M M Quarries Inc · MSHA ID 3609453
    Abandoned 2026-05-19
55. CBH Shagger Quarry

    Surface metal/non-metal · CBH Investments LLC · MSHA ID 3610348
    Abandoned 2025-06-03
56. Chad Lewis Stone

    Surface metal/non-metal · Chad Lewis Stone · MSHA ID 3610269
    Abandoned 2019-05-28
57. CHAPEL #1

    Surface metal/non-metal · B Groover & Rock · MSHA ID 3608927
    Abandoned 2003-02-11
58. CHIDESTER QUARRY

    Surface metal/non-metal · MAURICE DIAZ STONE · MSHA ID 3609280
    Abandoned 2006-10-25
59. Choconut Quarry

    Surface metal/non-metal · Amaya Stone · MSHA ID 3610090
    Abandoned 2018-04-19
60. Clapper Quarry

    Surface metal/non-metal · Ryan Ruark · MSHA ID 3609738
    Abandoned 2010-10-27
61. Clark Quarry

    Surface metal/non-metal · Dennis Bevan · MSHA ID 3609551
    Abandoned 2009-03-16
62. CLYDE LARUE STONE

    Surface metal/non-metal · Clyde La Rue Flagstone · MSHA ID 3607916
    Abandoned 2007-10-09
63. Cold Ridge Mobile

    Surface metal/non-metal · Cold Ridge Stone · MSHA ID 3610328
    Abandoned 2022-08-18
64. Coldwell Quarry

    Surface metal/non-metal · John E. Spickerman · MSHA ID 3609866
    Abandoned 2017-08-29
65. Colwell Portable

    Surface metal/non-metal · Jesse Colwell · MSHA ID 3609838
    Abandoned 2011-08-24
66. Colwell Portable

    Surface metal/non-metal · Glover Stone · MSHA ID 3609841
    Abandoned 2011-08-10
67. CONOVER #1

    Surface metal/non-metal · David Williams · MSHA ID 3609007
    Abandoned 2003-04-07
68. Conroy Portable

    Surface metal/non-metal · Conroy Flagstone · MSHA ID 3609725
    Abandoned 2010-07-27
69. COOK #1

    Surface metal/non-metal · Daryl Jay Cook Quarry Company · MSHA ID 3608916
    Abandoned 2005-08-18
70. COOK QUARRY

    Surface metal/non-metal · Cook Quarry · MSHA ID 3608993
    Abandoned 2003-07-10
71. Corbin Portable

    Surface metal/non-metal · Eric Corbin · MSHA ID 3610191
    Abandoned 2018-09-11
72. Cortes Stone

    Surface metal/non-metal · Cortes Stone · MSHA ID 3610181
    Abandoned 2022-05-11
73. Cowell Quarry

    Surface metal/non-metal · Cecil Kilmer Bluestone Quarries · MSHA ID 3607931
    Abandoned 1988-04-29
74. Cramer O'Dell

    Surface metal/non-metal · H.L.Robinson Sand and Gravel, Inc. · MSHA ID 3609949
    Abandoned 2013-04-18
75. Crestmont I

    Surface metal/non-metal · DH Manufacturing LLC · MSHA ID 3610081
    Abandoned 2024-07-30
76. CROSLEY #1

    Surface metal/non-metal · Bruce Taylor Sr · MSHA ID 3608764
    Abandoned 2000-08-31
77. Curley Quarry

    Surface metal/non-metal · Arrowhead Quarries · MSHA ID 3609480
    Abandoned 2016-09-20
78. D & J Quarry

    Surface metal/non-metal · John Sholtiss · MSHA ID 3609720
    Abandoned 2016-08-08
79. Daniel Knight

    Surface metal/non-metal · Daniel Knight · MSHA ID 3609323
    Abandoned 2005-08-15
80. Darwin Coyago

    Surface metal/non-metal · Luis Nugra Stones · MSHA ID 3610223
    Abandoned 2019-09-11
81. DC Quarries

    Surface metal/non-metal · DC Quarries · MSHA ID 3609930
    Abandoned 2012-09-05
82. DENNIS BEVAN QUARRY

    Surface metal/non-metal · Dennis Bevan Quarry · MSHA ID 3608997
    Abandoned 2003-04-07
83. Devil's Hole

    Surface metal/non-metal · Devil's Hole · MSHA ID 3609343
    Abandoned 2005-08-15
84. DEVILS GARDEN

    Surface metal/non-metal · B S Quarries · MSHA ID 3608600
    Abandoned 1998-04-09
85. DFLP #1

    Surface metal/non-metal · Eric Diaz · MSHA ID 3609855
    Abandoned 2010-09-09
86. DiBiase Quarries

    Surface metal/non-metal · Shattuck Quarries · MSHA ID 3609836
    Abandoned 2011-08-10
87. Dibiase Quarry

    Surface metal/non-metal · Mike Kovach · MSHA ID 3609837
    Abandoned 2012-06-11
88. Don Stauton Flagstone

    Surface metal/non-metal · Don Stauton Flagstone · MSHA ID 3610161
    Abandoned 2026-06-25
89. Doolittle Stone LLC

    Surface metal/non-metal · Doolittle Stone LLC · MSHA ID 3610149
    Abandoned 2017-05-02
90. DST Quarry

    Surface metal/non-metal · DST Quarry · MSHA ID 3609084
    Abandoned 2005-08-29
91. DUBBLE QUARRY

    Surface metal/non-metal · Algerd Choplosky Jr · MSHA ID 3609017
    Abandoned 2003-08-05
92. E K Quarry

    Surface metal/non-metal · E K Quarries · MSHA ID 3609018
    Abandoned 2011-08-22
93. Eddies Stone

    Surface metal/non-metal · Edward Barber · MSHA ID 3610270
    Abandoned 2021-05-18
94. Eddleston Quarry

    Surface metal/non-metal · Eddleston Quarry · MSHA ID 3609273
    Abandoned 2005-06-23
95. EDDLESTON QUARRY

    Surface metal/non-metal · A. WILBER STONE INC. · MSHA ID 3610292
    Abandoned 2026-05-19
96. Edwin Sanchez

    Surface metal/non-metal · Edwin Sanchez · MSHA ID 3610428
    Abandoned 2024-09-05
97. Elk Lake III

    Surface metal/non-metal · Meshoppen Stone Inc · MSHA ID 3609423
    Abandoned 2006-05-18
98. Ellis Mock Quarry

    Surface metal/non-metal · Ellis Quarry LLC · MSHA ID 3609478
    Abandoned 2008-03-20
99. Ellis Quarry

    Surface metal/non-metal · Ellis Quarry · MSHA ID 3608904
    Abandoned 2010-02-09
100. Ellis Quarry LLC

     Surface metal/non-metal · Ellis Quarry LLC · MSHA ID 3609745
     Abandoned 2010-07-07
101. Endless Mt. Stone Portable

     Surface metal/non-metal · Endless Mountain Stone Co. · MSHA ID 3609823
     Abandoned 2023-08-31
102. English Flats

     Surface metal/non-metal · M M Quarries Inc · MSHA ID 3610211
     Abandoned 2020-08-13
103. Eric Scott Strohl Quarry

     Surface metal/non-metal · Eric Scott Strohl · MSHA ID 3609656
     Abandoned 2008-09-09
104. Erie R R Bank Operation

     Facility coal · Popple Brothers · MSHA ID 3607278
     Abandoned 1984-03-01
105. Evans Maher Mine

     Surface metal/non-metal · Marty Evans · MSHA ID 3609659
     Abandoned 2009-06-23
106. F S Lopke Cobra Track Jaw sn: 53989

     Surface metal/non-metal · F.S. Lopke Contracting, Inc. · MSHA ID 3610025
     Abandoned 2014-05-27
107. F.S. Lopke: AMI 3042 Jaw sn 1084-1-D2360

     Surface metal/non-metal · F. S. Lopke Contracting, Inc. · MSHA ID 3610423
     Abandoned 2024-09-05
108. F.S. Lopke: Chamberlain Quarry

     Surface metal/non-metal · F.S. Lopke Contracting, Inc. · MSHA ID 3609984
     Abandoned 2016-08-23
109. F.S. Lopke: Fallon Quarry

     Surface metal/non-metal · F. S. Lopke Contracting, Inc. · MSHA ID 3610002
     Abandoned 2023-09-20
110. F.S. Lopke: Svedala 1208 Plant

     Surface metal/non-metal · F.S. Lopke Contracting, Inc. · MSHA ID 3610003
     Abandoned 2016-10-13
111. Fallon Stone Quarry

     Surface metal/non-metal · H.L. Robinson Sand and Gravel · MSHA ID 3609269
     Abandoned 2015-05-01
112. Family Affair Quarries

     Surface metal/non-metal · Brendan Connolly · MSHA ID 3609333
     Abandoned 2005-10-06
113. Farm Quarry II

     Surface metal/non-metal · Cold Ridge Stone LLC · MSHA ID 3609853
     Abandoned 2015-09-02
114. Fields Quarry

     Surface metal/non-metal · Pat Kipar · MSHA ID 3609873
     Abandoned 2011-08-29
115. Forest City Bank

     Surface coal · Anthracite Processing Co Inc · MSHA ID 3605714
     Abandoned 1981-01-19
116. Forest City Breaker

     Facility coal · Anthracite Processing Co Inc · MSHA ID 3601681
     Abandoned 1977-07-12
117. FOREST LAKE QUARRY

     Surface metal/non-metal · Kevin & Grace Ives · MSHA ID 3608934
     Abandoned 2005-06-01
118. Four Star Quarry

     Surface metal/non-metal · Butch Bluestone LLC · MSHA ID 3609587
     Abandoned 2025-08-27
119. Fox Hill Quarry

     Surface metal/non-metal · K. Millard, Inc. · MSHA ID 3609106
     Abandoned 2004-01-15
120. Frank Lopez

     Surface metal/non-metal · Frank Lopez · MSHA ID 3610055
     Abandoned 2014-04-03
121. Frank's Quarry

     Surface metal/non-metal · Tim Brewer & Son Flagstone · MSHA ID 3609340
     Abandoned 2007-11-19
122. FRUDA #1

     Surface metal/non-metal · Paul Newhart · MSHA ID 3608920
     Abandoned 2003-03-17
123. FRYSTAK #1

     Surface metal/non-metal · John P Frystak · MSHA ID 3609015
     Abandoned 2006-11-01
124. G.D Loke

     Surface metal/non-metal · Gary Loke Jr Stone Inc. · MSHA ID 3609827
     Abandoned 2011-08-09
125. Gage Quarry

     Surface metal/non-metal · Heeman Quarries · MSHA ID 3607913
     Abandoned 1992-08-10
126. Gamble Flagstone

     Surface metal/non-metal · Gamble Flagstone · MSHA ID 3608995
     Abandoned 2021-06-10
127. GAMBLE QUARRY #2

     Surface metal/non-metal · Gregory Flagstone · MSHA ID 3608994
     Abandoned 2003-04-01
128. Gary D Wood

     Surface metal/non-metal · Gary D Wood · MSHA ID 3609599
     Abandoned 2009-06-22
129. GENERATIONS QUARRY

     Surface metal/non-metal · Dale G Webster · MSHA ID 3608971
     Abandoned 2010-09-28
130. George Quarry

     Surface metal/non-metal · Scott George Bluestone · MSHA ID 3609672
     Abandoned 2015-09-21
131. Gesford Quarry #1

     Surface metal/non-metal · Karl Gesford · MSHA ID 3609448
     Abandoned 2006-09-11
132. Gilwal Farms

     Surface metal/non-metal · Gilwal Farms (G & N) Inc · MSHA ID 3609530
     Abandoned 2018-08-14
133. Glory Mountain

     Surface metal/non-metal · Gacha Stone · MSHA ID 3610390
     Abandoned 2023-08-22
134. Gold Mine

     Surface metal/non-metal · Diaz Stone & Pallet Inc. · MSHA ID 3609447
     Abandoned 2009-11-24
135. Green And Conrad Quarry

     Surface metal/non-metal · Lee A Wilbur Flagstone Co · MSHA ID 3600272
     Abandoned 1992-06-03
136. GROOVER #1

     Surface metal/non-metal · Todd Groover Flagstone · MSHA ID 3608929
     Abandoned 2001-08-21
137. GROOVER FLAGSTONE

     Surface metal/non-metal · L L FLAGSTONE · MSHA ID 3609152
     Abandoned 2005-06-16
138. Groover No. 2

     Surface metal/non-metal · Vangorder Stone · MSHA ID 3609871
     Abandoned 2011-07-19
139. Gruver 1

     Surface metal/non-metal · Marty Evans · MSHA ID 3610073
     Abandoned 2018-12-07
140. Guiton Quarry

     Surface metal/non-metal · Chancey Kelley · MSHA ID 3608026
     Abandoned 1989-09-01
141. Guiton Quarry

     Surface metal/non-metal · David M Guiton · MSHA ID 3609676
     Abandoned 2010-09-22
142. HALLOWICH

     Surface metal/non-metal · Barber Supply · MSHA ID 3609011
     Abandoned 2003-06-25
143. HALLOWICH

     Surface metal/non-metal · A & B Flagstone Company · MSHA ID 3609013
     Abandoned 2004-01-05
144. HALLSTEAD QUARRY

     Surface metal/non-metal · Jeffrey B O'Dell · MSHA ID 3608738
     Abandoned 2006-04-13
145. Halstead Quarry

     Surface metal/non-metal · Kilmer Quarries · MSHA ID 3608108
     Abandoned 1992-08-10
146. Handy

     Surface metal/non-metal · E K Quarries · MSHA ID 3609019
     Abandoned 2006-10-02
147. Hanjaras Quarry

     Surface metal/non-metal · Jose Danilo Enriquez Quarry · MSHA ID 3609601
     Abandoned 2018-09-12
148. Hanjaras Quarry

     Surface metal/non-metal · Josa Vasquez · MSHA ID 3610038
     Abandoned 2018-11-19
149. Harold T. Phillips (Portable)

     Surface metal/non-metal · Harold T. Phillips · MSHA ID 3609946
     Abandoned 2013-04-04
150. Hatfield & McCoy 1 and 2

     Surface metal/non-metal · Finch Flagstone · MSHA ID 3608973
     Abandoned 2006-05-08

…and 268 more mines not listed here.

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
• Allegheny County 763
• Cambria County 753

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.