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Adjusting Corn Belt Farming to Meet Corn-Borer Conditions

Description: "The European corn borer is recognized as a dangerous enemy of the corn crop.... Its eradication is considered economically impossible but it is believed that the injury may be kept at a point so low that little commercial damage will occur during normal seasons. This can be done by using control measures and practices that have proved to be effective.... On some farms some changes in the crops grown and in their sequence will aid materially in controlling the borer and may prove profitable eve… more
Date: 1932
Creator: Myres, Kenneth Hayes, 1898-
Item Type: Refine your search to only Pamphlet
open access

Asbestos

Description: From Introduction: "This report covers the essential features of the asbestos industry, including occurrence, production, mining, milling, utilization, international trade, and marketing."
Date: 1937
Creator: Bowles, Oliver
Item Type: Refine your search to only Report
open access

Copper Mining in North America

Description: From introduction: "In this paper are assembled and summarized many subjects relating to the copper industry in North America. Production of mines and districts, history of the industry in North America. Production of mines and districts, history of the industry, geology, of the principal deposits, and mining methods and costs are discussed."
Date: 1938
Creator: Gardner, E. D.; Johnson, C. H. & Butler, B. S.
Item Type: Refine your search to only Report
open access

Experiment Station Record, Volume 65, July-December, 1931

Description: Volume provides abstracts of agricultural experiments conducted during the year. Also includes statistics, convention reports, bulletins, bibliographies, and listings for Spanish edition publications from the Porto Rico Station. Name and subject indexes start on page 901.
Date: 1932
Creator: United States. Office of Experiment Stations.
Item Type: Refine your search to only Book
open access

Results of Electrical Resistivity and Electrical Induction Measurements at Abana Mine, Quebec, Canada: Explanation of Some Factors Associated with Induction Method

Description: Technical paper issued by the Bureau of Mines over studies conducted on electrical resistivity at the Abana Mine in Quebec. The methods used, and results of the studies are discussed. This paper includes tables, maps, and illustrations.
Date: 1931
Creator: Potter, E. Vernon & Lee, F. W.
Item Type: Refine your search to only Report
open access

Stoping Methods and Costs

Description: Report presenting a study of stoping methods and costs and summarizing the data obtained in earlier publications and those obtained during investigations in the field that apply particularly to stoping.
Date: 1936
Creator: Jackson, Charles Freeman & Gardner, E. D.
Item Type: Refine your search to only Report
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