nching. THE NORFOLK NAVY YARD. ing, which was 20-pound plating, there were nailed The ground ways, which were temporary, were BY E. 0. HAMNER, JR., ASSISTANT NAVAL CONSTRUCTOR, U. 8. N. along the side white oak planks 6 inches by 12 inches, carried out over the sea wall for a distance of about The… … rest, in a temperature equivalent to that pound plate; the material throughout be- of their native land. Where such conditions ing of mild steel. prevail, the natural oils of the skins are One caisson is provided with ten 24-inch preserved, instead of drying out in the sum- gate valves, and the…
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