Show discrepancy IN FIGURES special correspondence armour institute of technology chicago illinois january 15 in the issue of the mining review of december your special correspondent at spokane gives some statistics as to lead production and consumption under the title of want free lead and zinc the statement is made that the united states produces per cent of the worlds lead and consumes per cent in your issue of april 30 the figures of the united states geological survey state that in 1910 the united states produced tons of lead if the world production is taken as tons as stated in the article in question this makes our production per cent of the whole consumption will obviously be slightly greater than this both figures entirely different from those your correspondent supplies H B |