Salt Lake Herald-Republican | 1919-03-02 | Page 24 | Puffed Brick Ships Weigh Less than Boats of Concrete

PUFFED BRICK BRIC SHIPS WEIGH LESS THAN BOATS OF CONCRETE By ny l Service Oakland Ca Gal Cal March 1 Putted Puffed Puffed brick ships will soon be bo sailing Bailing the he seven seas and Uncle Undo Sam will be back of ot them The They are are the latest wrinkle In the program of ot tho the United States shipping board The first one of ot these boats will be launched from Government Island in Oakland inner harbor about March 15 When the tho pouring of ot two I ton oil tankers tankers' b began Jan at nt the tho San Francisco shipbuilding plant It was made a n. gala event b by the tho citizens of ot Oakland The Tho second vessel is 15 expected ex expected expected ex- ex to leave the ways as a day or two after the first launching The local yard has Introduced several several several sev sev- eral innovations In co concrete ship construction construction con con- chief of which is tho the use uso of puffed putted brick This Is made like Uko ordinary or- or ordinary ordinary or or- brick of or a peculiar clay containing containing con con- a a. low percentage of ot silicate When subjected subjected- to intense heat the bricks puff putt up liko like popcorn in a a. pop pop- per vcr The Tho product looks much liko like J coke and is 18 as light light- Tho The puffed putted I brick are then ground up and mixed I with cement Instead of ot using crushed II rock as in ordinary concrete I tion about 40 per cent la Is gained d lightness of ot tho the ships ship's walls M