. Transactions. Brin. d= mm. 1^]^^^ < ^HHH^miiii ^^w ^^^^ i!^ 650° C. ANNEAL Brin. d = mm. Brin. , d= mm. 70u° C. anneal Brin. , d= mm. Fig. 11.—Etched with ammonia and hydrogen peroxide. X 75. W. H. BASSETT AXD C. H. DAVIS 443 PER CENT. REDUCTION PER CENT. REDUCTION

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Keywords: ., bo, bookcentury1800, bookdecade1870, booksubjectmineralindustries