Manufacturing opportunities in the state of Washington . asily delivered wherever desired foruse. As a rule the sand and gravel are very fresh and hard,and ordinarily verv clean. Sometimes washing is resorted to,but frefjuentlv it is quite unnecessary. There are many useful non-metallic products which have notbeen mentioned. Silica, in the form of diatomaceous earth, oc-curs rather frequently and some of it of excellent rjuality hasbeen placed on tlie market. It is found abundantly in botheastern and western Washington and as its use widens it willbecome increasingly in demand. There are man^-
Manufacturing opportunities in the state of Washington . asily delivered wherever desired foruse. As a rule the sand and gravel are very fresh and hard,and ordinarily verv clean. Sometimes washing is resorted to,but frefjuentlv it is quite unnecessary. There are many useful non-metallic products which have notbeen mentioned. Silica, in the form of diatomaceous earth, oc-curs rather frequently and some of it of excellent rjuality hasbeen placed on tlie market. It is found abundantly in botheastern and western Washington and as its use widens it willbecome increasingly in demand. There are man^- mineral springsin the state from which water for table use is prepared for themarket. Some of these are of marked medicinal value and manywhich are not now commercially utilized will lie marketed in thefuture. It is safe to say that all of the non-metallic jjroducts thathave been mentioned, with others, are but in the infancy oftheir development and that in time to come they will play aprominent part in the industrial and commercial life of the CHAPTER MINERAL RESOURCES—METALS. BY MILNOR ROBERTS,Dean of the College of Mines, University of Washington. All industrial growth depends to a greater or less extentupon metals. If a state is lacking in natural resources of themetals it must look elsewhere for at least a limited supply ofthem. If it possesses the metals in useful quantities or is acenter for tributary regions which have large amounts of them,the possibilities favoring its industrial advancement are greatlyenhanced. FAVORING not only has a liberal supply of metal resourcesof its own but is adjacent to territory where otlier very richmines are located. Then, too, certain favoring conditions, someof which are natural and others due to the states development,exert an encouraging influence upon the mining of its ownminerals and place it in position to enjoy the full advantage ofproximity to other productive territory. These co
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