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Stone description: light gray
| Wall Number | Country Sort ascending | State | Classification | Source |
|---|---|---|---|---|
| 13LA12 | United States | Ohio | Dolomite | Freemont |
| 2B | United States | North Carolina | Granite | Mt. Airy |
| 7LB37 | United States | Massachusetts | Gneiss | Westford |
| 2c | United States | Alabama | Limestone | Rockwood |
| 7RA31 | United States | Colorado | Sandstone | Coal Creek |
| 11RA27 | United States | Kansas | Limestone | Cottonwood |
| 13rb46 | United States | Alabama | Limestone | Leighton |
| 6LA3 | United States | Pennsylvania | Sandstone | Wampum |
| 8rb9 | United States | Ohio | Limestone | Xenia |
| 13LA16 | United States | Iowa | Limestone | Fort Dodge |
| 10LB44 | United States | New Hampshire | Granite | Manchester |
| 13LA2 | United States | Illinois | Dolomite | Lemont |
| 2L10 | United States | Vermont | Marble | Florence |
| 7RA44 | United States | New Mexico | Sandstone | Las Vegas |
| 11RA29 | United States | Tennessee | Limestone | Sherwood Station |
| 14LA13 | United States | Ohio | Dolomite | Urbana |
| 6LA33 | United States | Colorado | Sandstone | Trinidad |
| 9La10 | United States | Iowa | Limestone | Keosauque Station |
| 10Lb46 | United States | Wisconsin | Sandstone | Mauston |
| 13LA20 | United States | Iowa | Coral | Iowa City |
| 2L12 | United States | Vermont | Marble | Florence |
| 7ra8 | United States | Alabama | Limestone | Dickson |
| 11RA3 | United States | Illinois | Dolomite | Lemont |
| 14LA2 | United States | Illinois | Dolomite | Aurora |
| 6LA44 | United States | New Hampshire | Granite | Troy |
| 9LA13 | United States | Kansas | Limestone | Manhattan |
| 10RA23 | United States | Kansas | Limestone | Eldorado |
| 13LA37 | United States | New York | Limestone | Cottonwood Sta. |
| 2L2 | United States | Vermont | Marble | Florence |
| 7RA9 | United States | Alabama | Limestone | Tuscumbia |
| 11RB1 | United States | Illinois | Dolomite | Joilet |
| 14LA3 | United States | Illinois | Dolomite | Joilet |
| 6LB13 | United States | Pennsylvania | Sandstone | Beaver Falls |
| 9LA18 | United States | Pennsylvania | Sandstone | Antrim |
| 13LA40 | United States | Ohio | Limestone | Newtonville |
| 2L3 | United States | Vermont | Marble | Florence |
| 7RB24 | United States | Maine | Granite | Augusta |
| 11RB10 | United States | Kansas | Dolomite | Marysville |
| 6LB20 | United States | Ohio | Sandstone | Sunbury |
| 9La2 | United States | Tennessee | Marble | Morristown |
| 14RB36 | Spain | Limestone | Murcia, Murcia | |
| 14LA46 | Portugal | Limestone | Janianes, Coimbra | |
| 8LA2 | Portugal | Marble | Ameixoira, Coimbra | |
| 8RA1 | Portugal | Marble | Ponde do Espinal, Coimbra | |
| 14LA45 | Portugal | Limestone | Ega, Coimbra | |
| 9LB33 | Mexico | Pyrophyllite | Sonora State | |
| 9RB31 | Mexico | Pyrophyllite | Sonora State | |
| 10LB39 | Mexico | Pyrophyllite | Sonora State | |
| 10RA29 | Mexico | Andesite | Ixtapalapa |