important and valuable data regarding the occurrence in the various states and districts and supplement the facts given with references, thus enabling the reader to extend his information by application to the original sources.
The discussion of methods of prospecting, developing and working mineral, and especially gold and silver deposits, has been entered into in considerable detail, with many references to actual operations as obtained from the technical press. In like manner the milling and metallurgical processes have been outlined and elaborated upon with extracts from reliable authorities. Further, the historical development of mining, milling and metallurgy has been outlined at length.
The discussion of the production of the precious metals in the United States has been given in detail, being considered as a whole, with the various other producing countries and by individual states. Much tabulated data is also given which often correlates production with other operations and events.
Throughout the entire work constant and conscientious reference has been made to the various authorities quoted and referred to, and it is to all, but especially those not directly referred to by name in the text, that due acknowledgements are herewith made. Without the information obtainable from technical literature which is voluminous, and much of permanent value, this work would not have been possible, especially in the time available for its preparation.
The object of this work with others of a series is to give a complete and accurate record of the development of the mineral resources of the country and its influence on the various industrial activities throughout the United States.
SCHOOL OF MINES, COLUMBIA UNIVERSITY.
DEPARTMENT OF MINING,
January 1, 1908.
The East and Southeast: The Southern Appalachian States. - The
Southwest and West: Texas, New Mexico, Arizona and Southern
California. - The Northwest: Alaska. The Northern Country: The
Lake Superior Region (the North Shore, Canada, and the South Shore,
the United States).
RECENT HISTORY BY STATES AND TERRITORIES
Alabama, Alaska, Arizona, Arkansas, California, The Carolinas,
Colorado, Connecticut, Georgia, Idaho, Illinois, Indiana, Kansas,
Kentucky, Maine, Maryland, Massachusetts, Michigan, Minnesota,
Mississippi, Missouri, Montana, Nebraska, Nevada, New Hampshire,
New Jersey, New Mexico, New York, Ohio, Oklahoma, Oregon,
Pennsylvania, Porto Rico, South Dakota, Tennessee, Texas, Utah,
Vermont, the Virginias, Washington, Wisconsin, Wyoming.
CHRONOLOGY OF GOLD AND SILVER MINING IN THE UNITED STATES
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OCCURRENCE IN VEINS BY STATES AND TERRITORIES
Alabama, Alaska, Arizona, Arkansas, California, Canada, the Carolina
Gold Belt, Colorado, Connecticut, Georgia, Idaho, Isthmus of Panama,
Kansas, Kentucky, Maine, Maryland, Massachusetts, Michigan,
Minnesota, Missouri, Montana, Nevada, New Hampshire, New Jersey,
New Mexico, New York, Oklahoma, Oregon, the Philippines, Penn-
sylvania, Porto Rico, South Dakota, Tennessee, Texas, Utah, Ver-
mont, the Virginias, Washington, Wisconsin, Wyoming.
PERMANENCE IN DEPTH
OCCURRENCE OF GOLD IN GRAVELS BY STATES AND TERRITORIES
Alabama, Alaska, Arizona, California, Colorado, the Carolinas,
Georgia, Idaho, Illinois, Indiana, Iowa, Isthmus of Panama, Kansas,
Minnesota, Mississippi, Missouri, Montana, Nebraska, Nevada, New
Mexico, Ohio, Oregon, Pennsylvania, the Philippines, Porto Rico,
South Dakota, Tennessee, Texas, Utah, Vermont, Virginia, Washing-
ton, Wisconsin, Wyoming.
Milling. Reduction.
Concentration.
Metallurgy. Pyritic Smelting. - Processes and Practice. - Chlorin-
ation. Processes and Practice. - Cyanidation. Processes and
Practice, Filterpress Work and Precipitation.
PRODUCTION OF THE UNITED STATES
THE WORLD'S PRODUCTION
PRODUCTION BY STATES AND TERRITORIES
The Southern States, Alaska, Arizona, California, Canada (The
Silver Islet Mine), Colorado, Idaho, Montana, Nevada, New Mexico,
Oregon, South Dakota, Utah, Washington, Wyoming, Other States
(as Arkansas, Indiana, Iowa, Massachusetts, Maine, Michigan, Minne-
sota, Missouri, New Hampshire, Texas, Vermont). .
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