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
5RB5 United States Ohio Sandstone Brownhelm light buff, medium grain, porous, Lower carboniferous
5RB46 United States Delaware Gneiss Wilmington dark gray, fine grain, augite-hornblende
5RB45 Hungary Conglomerate Hundscheim buff, drab-spotted, coarse grain, calcareous
5RB44 United States New Hampshire Granite Marlborough light gray, fine grain, muscovite-biotite
5RB43 United States New Jersey Conglomerate Boonton reddish, coarse grain, compact
5RB42 United States New Jersey Gneiss Bloomingdale greenish-gray, fine grain, biotite
5RB41 United States South Carolina Granite Fairfield Co. gray, medium grain, biotite
5RB40 United States South Carolina Granite Columbia gray, medium grain, biotite
5RB4 United States Ohio Sandstone Bellaire gray, coarse grain, porous, carboniferous
5RB39 United States Maryland Granite Montrose gray, fine grain, biotite
5RB38 United States North Carolina Granite Winston gray, coarse grain, biotite
5RB37 Mexico Basalt Puebla State nearly black, fine grain, coarsely vesicular
5RB36 United States Connecticut Granite W. Norfolk gray, fine grain, biotite
5RB35 United States Connecticut Diabase New Haven dark gray, fine grain, Mesozoic
5RB34 United States Minnesota Quartz Lake Co. dull-red, fine grain, compact, porphyry
5RB33 United States Minnesota Diabase Taylor's Falls nearly black, fine grain, olivine
5RB32 United States Colorado Diorite Monarch greenish-gray, fine grain
5RB31 United States Georgia Marble Holly Spgs. green, fine grain, serpentine
5RB30 United States California Tuff Lordsburg dull-red, fine grain, compact, basalt
5RB3 United States Ohio Sandstone Bedford light buff, coarse grain, porous, Lower carboniferous
5RB29 Austria Granite Crasstein black and white, medium grain, biotite
5RB28 Austria Quartz South Tyrol reddish, white-spotted, medium grainquartz, Porphyritic
5RB27 United States Maine Diabase Addison dark gray, fine grain, Devonian
5RB26 United States Maryland Conglomerate Cumberland light gray, coarse grain, compact, Lower Silurian
5RB25 United States North Carolina Granite Louisburg light gray, fine grain, biotite
5RB24 United States North Carolina Granite Warrenton light gray, fine grain, biotite
5RB23 United States North Carolina Granite Mooresville gray, fine grain, biotite
5RB22 United States North Carolina Granite Mt. Monroe gray, coarsely prophyritic, biotite
5RB21 United States North Carolina Granite Toisnot gray, pink-spotted, medium grain, biotite
5RB20 United States Massachusetts Granite Quincy dark gray, coarse grain, hornblende
5RB2 United States Ohio Sandstone Canal Dover Tuscarawas Co. light gray, coarse grain, porous, carboniferous
5RB19 United States Massachusetts Granite Quincy dark gray, coarse grain, hornblende
5RB18 United States Massachusetts Granite Quincy dark gray, coarse grain, hornblende
5RB17 United States Massachusetts Granite Quincy dark gray, coarse grain, hornblende
5RB16 United States Massachusetts Diabase E. Longmeadow dark gray, fine grain, Mesozoic
5RB15 United States Massachusetts Granite N. Easton pink, coarse grain, biotite
5RB14 United States Massachusetts Granite Quincy dark gray, coarse grain, hornblende
5RB13 United States Massachusetts Granite Quincy dark gray, coarse grain, hornblende
5RB12 United States Massachusetts Granite Quincy dark gray, coarse grain, hornblende
5RB11 United States Massachusetts Granite Quincy dark-red, coarse grain, hornblende
5RB10 United States Massachusetts Granite Quincy Adams pink, fine grain, biotite
5RB1 United States Ohio Sandstone Amherst light brown, medium grain, porous, Lower carboniferous
5RA9 United States Ohio Sandstone Belleville brown, coarse grain, porous, Lower carboniferous
5RA8 United States Ohio Sandstone Greenfield gray, dark-streaked, fine grain, compact, Lower carboniferous
5RA7 United States Ohio Sandstone Lewis Mills buff, coarse grain, porous, carboniferous
5RA6 United States Ohio Sandstone Howard Station Knox Co. yellow, brown-streaked, coarse grain, porous, Lower carboniferous
5RA5 United States Ohio Sandstone Marietta buff, fine grain, porous, carboniferous
5RA46 United States Rhode Island Granite Niantic gray, fine grain, biotite
5RA45 Hungary Conglomerate Sommerein pale-buff, fine grain, porous calcareous
5RA44 United States Vermont Argillite (Slate) Castleton blue-black, fine grain, rough-texture roofing slate
5RA43 United States New Jersey Diabase Weehawken dark gray, fine grain
5RA42 United States New Jersey Gneiss Dover greenish-gray, medium grain, non micaceous, hornblende
5RA41 United States South Carolina Granite Newberry Co. gray, fine grain, biotite
5RA40 United States South Carolina Granite Rion gray, medium grain, biotite
5RA4 United States Ohio Sandstone Buena Vista gray, fine grain, porous, Lower carboniferous
5RA39 United States Maryland Gneiss Baltimore light gray, fine grain, biotite
5RA38 Unknown Granite
5RA37 Mexico Andesite Hildalgo State dark gray, fine grain, compact
5RA36 United States Connecticut Gneiss Bolton gray, coarse, biotite
5RA35 United States Connecticut Granite W. Norfolk gray, fine grain, biotite
5RA34 United States Connecticut Conglomerate Portland brownish-purple, porous, Triassic
5RA33 United States Minnesota Granite E. St. Cloud Red, coarse grain, hornblende
5RA32 United States Colorado Granite Lawson gray, pink-spotted, medium grain, porphyritic biotite
5RA31 United States Georgia Gneiss Atlanta dark gray, fine grain, hornblende-biotite
5RA30 United States California Granite Penryn dark-olive, black-spotted, medium grain, hornblende
5RA3 United States Ohio Sandstone Bellaire gray, medium grain, porous, carboniferous
5RA29 United States California Basalt Petaluma dark gray, fine grain, compact
5RA28 Austria Pitchstone Castleruth dark-brown, coarse grain
5RA27 United States Maine Granite Biddeford gray, coarse grain, biotite
5RA26 United States Maine Granite Biddeford gray, coarse grain, biotite
5RA25 United States North Carolina Granite Mecklenburg Co. gray, coarse grain, hornblende
5RA24 United States North Carolina Granite Rockingham pinkish-gray, coarse grain, prophyritic biotite
5RA23 United States North Carolina Granite Rockingham greenish-gray, coarse grain, biotite
5RA22 United States North Carolina Granite Poison Springs gray, medium grain, biotite
5RA21 United States Massachusetts Granite W. Quincy dark gray, coarse grain, hornblende
5RA20 United States Massachusetts Granite Wyoma gray, coarse grain, hornblende
5RA2 United States Ohio Sandstone Iberia light buff, fine grain, porous, Lower carboniferous
5RA19 United States Ohio Sandstone Mansfield Red, coarse grain, porous, Lower carboniferous
5RA18 United States Ohio Sandstone E. Cleveland light buff, medium grain, porous, Lower carboniferous
5RA17 United States New Jersey Granite Pompton Jct. pink and green, coarse grain, pegmatite, Pompton Pink
5RA16 United States Ohio Sandstone Leesville gray, fine grain, porous, Lower carboniferous
5RA15 United States Ohio Sandstone Cambridge light gray, coarse grain, porous, carboniferous
5RA14 United States Ohio Sandstone Coshocton red and buff streaked, coarse grain, porous carboniferous
5RA13 United States Ohio Sandstone Marietta gray, fine grain, porous, carboniferous
5RA12 United States Ohio Sandstone Euclid gray, fine grain, porous, Lower carboniferous
5RA11 United States Ohio Sandstone Lithopolis gray, fine grain, porous, Lower carboniferous, freestone
5RA10 United States Ohio Sandstone Berea llight gray, fine grain, porous, Lower carboniferous
5RA1 United States Ohio Sandstone Massillon light brown, medium grain, porous, carboniferous
5LQ United States Tennessee Marble Knoxville pink, medium grain, calcite, Bond Pink
5LB9 United States Massachusetts Granite Clinton dark gray, fine grain, biotite
5LB8 United States Massachusetts Granite Gloucester darka-gray, coarse grain, hornblende
5LB7 United States Ohio Sandstone N. Bloomfield gray, fine grain, compact, Lower carboniferous
5LB6 United States Ohio Sandstone Newark pinkish-yellow, coarse grain, porous, Lower carboniferous
5LB5 United States Ohio Sandstone Newburgh gray, coarse grain, porous, Lower carboniferous
5lb46 Argentina Serpentine Unknown Dull-red and white, coarse grain
5LB45 Hungary Conglomerate Leitha Mts. grayish, coarse grain, porous calcareous
5Lb44 United States New Hampshire Granite Concord gray, fine grain, biotite-muscovite
5LB43 United States New Hampshire Granite Concord gray, fine grain, biotite-muscovite
5LB42 United States New Jersey Conglomerate Morristown reddish-brown and white, coarse grain, compact
5LB41 United States New Jersey Granite Pompton Jct. pink and green, coarse grain, pegmatite, Pompton Pink