Production. Milling machines and machine castings. We are inclined to compare all liquids with water. Iron trickles through little channels with a speed that makes water look sluggish -- a surprising thing until you realize that, molten or not, it's still heavy as iron. Location: a large Midwest mac

United States. Office For Emergency Management, Palmer, Alfred T. · 1942-01-01 · photo, print, drawing

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