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production rate ton per hour metal briquetting machine in united states

to as the basic steel industry decreased at an average annual rate of 28 percent between 19U7 and 1955 Stated the other way around the output per manhour increased at a rate of 29 percent per year 1 The yeartoyear changes were quite irregular during this 8year period7 influenced to some extent by the fluctuations of the business cycle

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