Miracle concrete: the great modern industry (1909)
Miracle Pressed Stone Co. · Miracle Pressed Stone Co. · leaf 111
producing three thousand brick or one days output. must be thorough; although further tamping after the materials 14 mixture—1 part cement and 4 parts sand. Standard size, have become compact is a waste of energy. 8% inches by 4]/& inches by 2% inches, each brick weighing First put the hopper… … Illustration No. 5.Applying an extra fine surface before tamping. Necessaryonly when making face brick.
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