Show the mining minina review is under obligations to hon robert L slagle president of the south dakota school of mines at rapid city for bulletin no 5 issued by the department of metallurgy in which the cyanide process of ore reduction as used in the black hills is s fully described by charles H r ulton fulton M E the work is handsomely and profusely illustrated and is of great reat value because of the exhaustive exhaust ivo and ale able treatment of its subject matter As A s arefe a reference rende book it is invaluable |