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Stone description: light gray
| Wall Number | Country Sort descending | State | Classification | Source |
|---|---|---|---|---|
| 9LB33 | Mexico | Pyrophyllite | Sonora State | |
| 9RB31 | Mexico | Pyrophyllite | Sonora State | |
| 10LB39 | Mexico | Pyrophyllite | Sonora State | |
| 10RA29 | Mexico | Andesite | Ixtapalapa | |
| 8LA2 | Portugal | Marble | Ameixoira, Coimbra | |
| 8RA1 | Portugal | Marble | Ponde do Espinal, Coimbra | |
| 14LA45 | Portugal | Limestone | Ega, Coimbra | |
| 14LA46 | Portugal | Limestone | Janianes, Coimbra | |
| 14RB36 | Spain | Limestone | Murcia, Murcia | |
| 10RB25 | United States | Maine | Granite | Hallowell |
| 13RA2 | United States | Illinois | Dolomite | Lemont |
| 4L9 | United States | Ohio | Sandstone | Berea |
| 8La17 | United States | Kentucky | Limestone | Russelville |
| 12LA32 | United States | Illinois | Limestone | Jonesborough |
| 14LB43 | United States | Nebraska | Limestone | LaPlatte |
| 6RA4 | United States | Pennsylvania | Sandstone | Connellsville |
| 9LB23 | United States | Ohio | Sandstone | Marietta |
| 10RB32 | United States | Colorado | Sandstone | Fort Collins |
| 13RA20 | United States | Iowa | Limestone | Sigourney Station, Keokuk Co. |
| 4LB12 | United States | Indiana | Limestone | Salem |
| 12LA35 | United States | Indiana | Limestone | Spencer |
| 14Lb46 | United States | Kentucky | Limestone | Princeton |
| 6RA44 | United States | New Hampshire | Granite | Milford |
| 9LB24 | United States | Massachusetts | Gneiss | Charlton |
| 10RB45 | United States | New Hampshire | Granite | Mason |
| 13RA24 | United States | Kansas | Limestone | Douglass |
| 4R9 | United States | Ohio | Sandstone | Berea |
| 8LA30 | United States | New York | Sandstone | Lockport |
| 12La36 | United States | Kentucky | Limestone | Bloomfield |
| 14RA10 | United States | Pennsylvania | Dolomite | Mill Lane Chester Co. |
| 6RB1 | United States | Pennsylvania | Quartzite | Huntingdon |
| 10RB7 | United States | Missouri | Limestone | Hannibal |
| 4RB12 | United States | Indiana | Limestone | Salem |
| 8LA36 | United States | Missouri | Sandstone | Clinton |
| 12LA37 | United States | Alabama | Limestone | Trinity |
| 14RA15 | United States | Iowa | Dolomite | Winterset |
| 6RB18 | United States | Pennsylvania | Gneiss | Chester |
| 9RA39 | United States | Wyoming | Sandstone | Rawlins |
| 11B | United States | New Hampshire | Granite | Concord |
| 13RA41 | United States | Kentucky | Limestone | Princeton |
| 5B | United States | Maine | Granite | North Jay |
| 8La46 | United States | Washington | Sandstone | Wilkeson |
| 12LB35 | United States | Indiana | Limestone | Bedford |
| 14RA16 | United States | Iowa | Dolomite | Franklin |
| 6RB20 | United States | Ohio | Sandstone | Amherst |
| 9RA42 | United States | Illinois | Sandstone | Xenia |
| 11La1 | United States | Indiana | Dolomite | St. Paul |
| 13RA43 | United States | Kentucky | Limestone | Hopkinsville |
| 5LA18 | United States | Ohio | Sandstone | Plymouth |
| 8Lb46 | United States | Washington | Sandstone | Pittsburgh |
| 12RA1 | United States | Indiana | Limestone | Bedford |
| 14RA2 | United States | Illinois | Dolomite | Joilet |
| 6RB24 | United States | North Carolina | Granite | Salisbury |
| 9RA9 | United States | Iowa | Limestone | Tracey Station, Marion Co. |
| 11LA12 | United States | Missouri | Dolomite | Jefferson City |
| 13RA44 | United States | Kentucky | Limestone | Pilot Knob |
| 5LA9 | United States | Ohio | Sandstone | Piketon |
| 8LB6 | United States | Nebraska | Limestone | Roca |
| 12RA11 | United States | Kentucky | Limestone | Lagrange |
| 14RA28 | United States | Tennessee | Limestone | Carter's Station Creek |
| 6RB28 | United States | New York | Sandstone | Canisteo |
| 9RB13 | United States | Iowa | Limestone | Conrad |
| 11La17 | United States | Iowa | Dolomite | Lansing |
| 13RA46 | United States | Kentucky | Limestone | Trenton |
| 5LB12 | United States | Massachusetts | Granite | Freetown |
| 8r48 | United States | Ohio | Sandstone | Berea |
| 12RA16 | United States | Iowa | Dolomite | Farley |
| 14RB12 | United States | Indiana | Limestone | Oakdale |
| 6rb33 | United States | Colorado | Tuff | Castle rock |
| 9RB21 | United States | Ohio | Sandstone | Berea |
| 11LA2 | United States | Michigan | Dolomite | Raisinville |
| 13RA47 | United States | Alabama | Limestone | Rockwood |
| 5LB15 | United States | Massachusetts | Gneiss | Westford |
| 12RA29 | United States | Ohio | Marble | Spring Mills |
| 14RB13 | United States | Ohio | Dolomite | Sandusky |
| 6RB39 | United States | Ohio | Sandstone | Sunbury |
| 11LA23 | United States | Kansas | Limestone | Eldorado |
| 13RB10 | United States | Ohio | Dolomite | Sandusky |
| 5LB30 | United States | Georgia | Granite | Ogelsby |
| 8RA10 | United States | Illinois | Limestone | Chester |
| 12RA3 | United States | Illinois | Dolomite | Chicago |
| 14RB16 | United States | Iowa | Dolomite | Franklin |
| 6RB40 | United States | Maryland | Gneiss | Mt. Royal |
| 9RB39 | United States | Indiana | Sandstone | Paoli |
| 11LA24 | United States | Tennessee | Marble | Knoxville |
| 13RB12 | United States | Ohio | Dolomite | Greenfield |
| 5LB32 | United States | Colorado | Granite | Lawson |
| 8RA11 | United States | Illinois | Limestone | Rockport |
| 12RA30 | United States | Illinois | Limestone | Joliet |
| 14RB17 | United States | Iowa | Dolomite | Quarry, Marshall Co. |
| 6RB44 | United States | New Hampshire | Granite | Keene |
| 9RB40 | United States | Indiana | Sandstone | Attica |
| 11LA7 | United States | Pennsylvania | Marble | Cedar Hollow Lime Co. |
| 13RB16 | United States | Iowa | Dolomite | Farley |
| 5LB38 | United States | Maryland | Gneiss | Baltimore |
| 8RA12 | United States | Illinois | Limestone | Jonesborough |
| 12RA32 | United States | Indiana | Limestone | Salem |
| 14RB21 | United States | Iowa | Limestone | Pella Station, Marion Co. |
| 6RB46 | United States | Vermont | Granite | Barre |
| 11LA8 | United States | Kansas | Limestone | Florence |