U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Engineering Laboratory

Materials and Structural Systems Division

Search the Stone wall

Share

Search by state, country, classification, source, wall number or description.

Wall Number Country State Classification Source Description
5RA27 United States Maine Granite Biddeford gray, coarse grain, biotite
5RB43 United States New Jersey Conglomerate Boonton reddish, coarse grain, compact
6LB11 United States Pennsylvania Sandstone Sharon buff, coarse grain, porous, carboniferous
6RA25 United States Maine Gneiss Turner dark gray, medium grain, biotite
10Lb36 United States Kansas Sandstone Pawnee gray, dark-spotted, medium grain, compact, calcareous
10Ra48 United States Tennessee Gneiss Wolf Creek Cocke Co. gray and pink, fine grain, compact, conglomerate
11LA11 United States Kentucky Dolomite Bardstown drab, fine grain, compact, Upper Silurian
11LB33 United States New Hampshire Granite Manchester pink, coarse grain, muscovite-biotite
11RB14 United States Missouri Dolomite Hermann dark gray, fine grain, compact, siliceous
12RA12 United States Ohio Dolomite Lexington dark gray, fine grain, compact, bituminous, Upper Silurian
9LB9 United States Iowa Limestone Earlham drab, coarse grain, compact, fossiliferous, carboniferous
S1-40 United States Pennsylvania Sandstone Wyoming dark-gray, fine-grain, compact
S2-142 United States California Marble Columbia gray, medium-grain dolomitic marble, Columbia Dark Vein
S2-48 United States New Hampshire Granite Concord gray, medium grain, muscovite-biotite
S3-5 United States Indiana Limestone Bedford buff, medium-grain, oolitic, Grade A
7LA23 United States North Carolina Granite Buckhorn Falls light gray, green-spotted, medium grain, biotite
7LB41 United States Montana Granite Lewis & Clark Co. gray, medium grain, Porphyritic, biotite
7RB17 United States Pennsylvania Gneiss Reading gray, coarse grain
12RB18 United States Vermont Marble W. Rutland cut from same block as 10RA18, white, gray-veined, Lower Silurian, calcite
8LB45 United States Wisconsin Gneiss Black River Falls reddish, fine grain, biotite
8RB16 United States Wisconsin Limestone Madison buff, fine grain, porous, Lower Silurian
13Lb8 United States Pennsylvania Marble Lancaster black, fine grain, compact, Lower Silurian, dolomite
13RB22 United States Texas Marble Burnet blue gray, medium grain
14LB47 United States Kentucky Limestone Pineville drab, fine grain, compact
14RB16 United States Iowa Dolomite Franklin light gray, fine grain, compact, Lower carboniferous
3D United States Virginia Greenstone Lynchburg green, coarse grain, actinolite schist, Virginia Greenstone
4LB13 United States Maryland Marble Cockeysville white, coarse grain
5LA24 United States Maine Granite S. Brookville gray, coarse grain, biotite
5LB40 United States South Carolina Granite Fairfield Co. gray, fine grain, biotite
5RB14 United States Massachusetts Granite Quincy dark gray, coarse grain, hornblende
6LA25 United States Maine Granite Wayne gray, coarse grain, biotite
6LB40 United States Maryland Granite Woodstock gray, medium grain, biotite
10LA7 United States New York Limestone Onondaga dark gray, medium grain, compact, fossiliferous, magnesian, Devonian
6RB11 United States Pennsylvania Conglomerate Pottsville brown and gray, coarse, compact, siliceous
10RA19 United States Vermont Marble Dorset white, medium grain, Lower Silurian, calcite
10RB32 United States Colorado Sandstone Fort Collins light gray, fine grain, porous, calcareous
11La40 United States Tennessee Sandstone Sewanee light buff, medium grain, porous
11RA20 United States Texas Marble San Saba light gray, coarse grain, cretaceous
11RB43 United States New Mexico Serpentine Grant County Gila River green and white-banded, fine grain, Riccolite
12LB20 United States Vermont Marble W. Rutland gray, black-streaked, Lower Silurian, calcite
12RA8 United States New York Limestone Cobleskill black, fine grain, compact, magnesian, Devonian
S1-11 United States Rhode Island Granite Westerly gray, fine-grain, biotite
S2-113 United States Tennessee Sandstone Crossville Crab Orchanrd Stone, variegated colors, some on bed and some on edge, in 3- to 6 in. thicknesses
S2-19 United States Maryland Schist Potomac Varicolored chlorite, some with cleavage horizontal, some with cleavage vertical
S2-77 United States New Hampshire Granite Concord gray, medium-gray, muscovite-biotite
6RB41 United States Maryland Serpentine Dublin Borough dark and light-green, variegated
7RA29 United States California Sandstone Angel Island gray, fine grain, porous
8LB16 United States Mississippi Limestone Teshomingo County gray, fine grain, compact, finely fossiliferous
12WE United States Ohio Sandstone McDermott blue, fine-grain, porous
13LB21 United States Iowa Limestone Independence buff, fine grain, compact, fossiliferous, Devonian
8RB45 United States Wisconsin Sandstone Packwaukee light buff, medium grain, porous, Lower Silurian
9LB14 United States Iowa Limestone Fairfield gray, fine grain, compact, micaceous, Lower carboniferous
13RB9 United States Pennsylvania Dolomite Potts Landing Berk's Co. bluish-gray, fine grain, compact, Lower Silurian
14LB18 United States Vermont Marble Dorset white, medium grain, Lower Silurian, calcite
14RB45 United States Kentucky Limestone Frankfort light gray, compact, medium grain, fossiliferous
1RQ United States Ohio Sandstone Amherst buff, medium grain, porous, Berea Buff
2L5 United States Vermont Marble Danby white, yellow-clouded, medium grain, calcite, Imperial Danby Building and Memorial Grade
4RB12 United States Indiana Limestone Salem light gray, medium grain, porous, Lower carboniferous, oolitic
5LB12 United States Massachusetts Granite Freetown light gray, coarse grain, biotite
5RB44 United States New Hampshire Granite Marlborough light gray, fine grain, muscovite-biotite
6LB12 United States Pennsylvania Sandstone Norristown reddish-brown, coarse, porous, Triassic
10LA24 United States Kansas Limestone Grenola drab, fine grain, compact, Fusulina
6RA26 United States Maine Granite Chesterville gray, fine grain, biotite
10Lb37 United States West Virginia Sandstone Grafton light buff, coarse grain, porous, carboniferous
10RA49 United States Tennessee Granite Carter Co. S. E. part gray, coarse grain, hornblende
11LA12 United States Missouri Dolomite Jefferson City light gray, fine grain, compact, siliceous
11LB34 United States New Hampshire Breccia Franconia Red, compact, breccia of porphyry Fragments
11RB15 United States Iowa Dolomite Lansing buff, coarse grain, porous, Lower Silurian
12RA13 United States Ohio Dolomite Lima dark, fine grain, porous, argillaceous, bituminous
9LQ United States Tennessee Marble Knoxville pink, medium grain, calcite, Craig Edward medium Pink
S1-41 United States Pennsylvania Sandstone Wyoming dark-gray, fine-grain, compact
S2-143 United States California Marble Columbia gray, medium-grain dolomitic marble, Columbia Dark Vein
S2-49 United States Massachusetts Granite Quincy dark-gray, coarse-grain, hornblende
S3-6 United States Ohio Sandstone McDermott gray, fine-grain, porous
7LA24 United States Maine Granite Round Pond gray, fine grain, biotite
7Lb42 United States New Hampshire Granite W. Concord gray, fine grain, biotite-muscovite
7RB18 United States Pennsylvania Granite Siesholtzville gray-mottled, fine grain, hornblende-biotite
8LA30 United States New York Sandstone Lockport light gray, fine grain
12RB19 United States Vermont Marble Center Rutland cut from the same block as 13LB17, white, gray-veined, fine grain, Lower Silurian, calcite
8Lb46 United States Washington Sandstone Pittsburgh light gray, medium grain, compact, micaceous
8RB17 United States Pennsylvania Limestone Mertztown dark blue gray, medium grain, compact, Lower Silurian
13LB9 United States Ohio Dolomite Sandusky gray, fine grain, compact, bituminous, Devonian
9LA28 United States New York Sandstone Warsaw blue gray, fine grain, compact, argillaceous, Devonian
13RB23 United States Texas Limestone Austin light gray, fine grain, compact
14LB48 United States Missouri Limestone Carthage gray, medium grain, crystalline calcite, Ozark Travernelle
14RB17 United States Iowa Dolomite Quarry, Marshall Co. light gray, fine grain, porous, Lower carboniferous
3EE United States Pennsylvania Sandstone Curwensville buff, coarse-grain, compact
4LB14 United States Maine Granite Somesville Mt. Desert pink and mauve, coarse grain, biotite
5LA25 United States Maine Granite Frankfort gray, coarse grain, biotite
5LB41 United States New Jersey Granite Pompton Jct. pink and green, coarse grain, pegmatite, Pompton Pink
5RB15 United States Massachusetts Granite N. Easton pink, coarse grain, biotite
6LA26 United States Maine Granite Lincolnville light gray, fine grain, muscovite-biotite
6LB41 United States South Carolina Granite Edgefield Co. gray, fine grain, biotite
10La8 United States Pennsylvania Dolomite Easton nearly black, fine grain, compact, Lower Silurian
6RB12 United States Pennsylvania Conglomerate Pikesville reddish-gray, compact, conglomerate
10RA2 United States Washington Marble Lincoln Co. pale-pink, coarse grain, magnesian
10RB33 United States Connecticut Granite Stony Creek Red, coarse grain, biotite
11LA5 United States Minnesota Limestone Red Wing light grab, fine grain, compact, magnesian, dendritic
11RA21 United States Missouri Limestone St. Louis light gray, medium grain, compact, semicrystalline, Lower carboniferous
11RB44 United States New Mexico Serpentine Grant County Gila River cut from same block as 11RB43, green and white-banded, fine grain, Riccolite