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Factors Governing the Entry of Solutions into Ores During Leaching

Description: Technical paper issued by the Bureau of Mines over studies on the leaching of copper-bearing ores. As stated in the introduction, the "penetration of the leaching medium into the body of the ore particles" (p. 1) is discussed. This paper includes tables, photographs, and illustrations.
Date: 1929
Creator: Sullivan, John D.; Keck, Walter E. & Oldright, George L.
Item Type: Refine your search to only Report
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Rhodes Grass

Description: Revised edition. "Rhodes grass was introduced from southern Africa in 1902, and has proved of value for cultivation in the warmer parts of the United States, being grown more largely in Florida and Texas than elsewhere.... It makes a heavy yield of hay of excellent quality, as the stems are slender, tender, and very leafy. The hay is cured easily and is relished by all kinds of live stock.... This bulletin mentions the soil preferences of this grass and gives the methods of seeding and after-tr… more
Date: 1922
Creator: Tracy, S. M. (Samuel Mills), 1847-1920
Item Type: Refine your search to only Pamphlet
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Strawberry Culture: Western United States

Description: Revised edition. "This bulletin applies to that part of the United States in which ordinary farm crops are grown largely under irrigation. It describes methods practiced in the more important commercial strawberry-growing districts in the irrigated regions of the West; it aims to aid those familiar only with local and perhaps unsatisfactory methods, as well as inexperienced prospective growers. The fundamental principles of the irrigation of strawberries are substantially the same as those whic… more
Date: 1928
Creator: Darrow, George M. (George McMillan), 1889-
Item Type: Refine your search to only Pamphlet
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