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thousand tons of steel ballast water ballast research vertical stainless steel powder machine prices

thousand tons of steel ballast water ballast research vertical stainless steel powder machine prices

In 1986 it took 174783 employees to make 81606 thousand tons of raw steel or about 467 tons per employee per year or 45 hours per ton In 1998 it took 81572 employees to make 108752 thousand tons of raw steel or about 1333 tons per employee per year or 16 hours per ton

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