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Scientific American, Vol. 77, No. 15 (October 1897) (1897)

leaf 7

An illustration from Scientific American, Vol. 77, No. 15 (October 1897), 1897, leaf 7
metal much more firmly than that ly clean the steelwork by the sand blast and then paint seen on the opposite side of the mixer. The mixing is which was put on over old paint. We are indebted to Mr. M. E. Evans, of the Board of it with eighteen different varieties of paint. As time done as follows… … Sand Blast, One Hundred and Fifty fifth Street Viaduct, New York City. USE OF THE SAND BLAST FOR CLEANING STRUCTURAL IRONWORK. © 1897 SCIENTIFIC AMERICAN, INC.

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