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Show LIMESTONE IS MAIN OUTPUT AMONG ROCK More Hmeslono la produced in the United States tlum any other kind ot stone, not excepting granite, and Its valuo ts also greater. The value of the limestone output in 1911, according to the United States geological geo-logical survey, was S33,S07,Si)2, a decrease of $706,316 from the figures for 1010. The docreaae in value was chiefly in limestone lime-stone used for fluxing. Theso figures do not include tho value of most of the stono that is burned into lime, nor a largo quantity of limestone used in the manufacture of Portland cement. The principal states that produced limestone In 191 J were, in rank of valuo, Pennsylvania, Ohio, Indiana, Illinois, Now York and Missouri, each having an output of more than 2,000,000. |