ABSTRACT
The previous chapter established a descriptive basis for arguing that, for merchant blast furnaces in the 1920s, there tended to be an association between mechanization and large-scale production with concomitant impact on unit labour requirement. Two propositions with corollaries emerged from this descriptive data and accompanying commentary in the report Productivity o f Labor in Merchant Blast Furnaces (United States Department of Labor Bureau of Labor Statistics, Bulletin No. 474, December 1928, hereafter referred to as Bulletin 474).
