Putting ball of white-hot iron into a rotary squeezer to remove the slag and cinder, and force the metal into the shape of a cylinder or 'bloom'. Phoenix Iron and Bridge Works, Phoenixville, Pennsylvania. FromThe Science Record, New York, 1873. Engraving.
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Creative#:
TOP09095839
Source:
達志影像
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RM
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須由TPG 完整授權
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