Abstract

A discussion of the flint clays of Ohio with special reference to Sciotoville, Lower Kittanning, Oak Hill and Lower Freeport clays. It is shown that (1) flint clay beds of high heat duty quality in Ohio are small but well-defined (2) there is small prospect of finding other deposits under deeper covering (3) the most easily available material is exhausted (4) the present supply will last present plants at least fifty years but will not permit much increased consumption (5) conservation of high heat duty clays should begin now before supply is gone.

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