Author: Publisher:
ISBN:
Category : Mountain ecology
Languages : en
Pages : 348
Book Description
An Ecological Characterization of Rocky Mountain Montane and Subalpine Wetlands
Author: National Water Summary
Author: Prominent Families of New York
Author: Lyman Horace WeeksPublisher:
ISBN:
Category : New York (N.Y.)
Languages : en
Pages : 64
Book Description
The Potential Effects of Global Climate Change on the United States
Author: The Great Lakes Water Wars
Author: Peter AnninPublisher: Island Press
ISBN: 159726637X
Category : Business & Economics
Languages : en
Pages : 321
Book Description
The Great Lakes are the largest collection of fresh surface water on earth, and more than 40 million Americans and Canadians live in their basin. Will we divert water from the Great Lakes, causing them to end up like Central Asia's Aral Sea, which has lost 90 percent of its surface area and 75 percent of its volume since 1960? Or will we come to see that unregulated water withdrawals are ultimately catastrophic? Peter Annin writes a fast-paced account of the people and stories behind these upcoming battles. Destined to be the definitive story for the general public as well as policymakers, The Great Lakes Water Wars is a balanced, comprehensive look behind the scenes at the conflicts and compromises that are the past-and future-of this unique resource.
River restoration: a strategic approach to planning and management
Author: Speed, RobertPublisher: UNESCO Publishing
ISBN: 9231001655
Category :
Languages : en
Pages : 204
Book Description
Federal Guidelines for Dam Safety
Author: Placer Gold Deposits of Nevada (Classic Reprint)
Author: Maureen G. JohnsonPublisher: Forgotten Books
ISBN: 9780331313765
Category :
Languages : en
Pages : 146
Book Description
Excerpt from Placer Gold Deposits of Nevada Following the discovery of placers at Gold Canyon, placer discoveries in Nevada were broadly in three periods: the 1860's to 1880's, when many small deposits throughout the State were discovered and sporadically worked and several large placers were discovered and extensively worked; the short period between 1906 and 1910, when very rich placers were dis covered at Lynn, Battle Mountain, Manhattan, and Round Mountain; the early 1930's, when economic conditions created by the depression caused a renewed interest in placer mining, and many individuals sought, and a few discovered, new placer areas throughout the State. The location of the placers described in this report is shown on plate 1. Very little factual information can be found about the early periods of placer mining in Nevada. For many placers, the only reports available are hearsay estimates of production and speculations about the extent of the placer ground based on remnants of placer pits, shafts, and other workings. Many of the placers said to have had a high production between 1860 and 1890 were worked by Chinese miners who came to Nevada dur ing the building of the railroads and stayed on to work at mining and other activities. The Chinese were reputed to be secretive with their earnings from the placers and did not ship the gold to the mint by Wells Fargo or other shippers. They worked the gravels very thoroughly in areas where American miners did not wish to expend great labor to win the gold. The placers in the Sierra and Spring Valley districts, Pershing County, were worked by Chinese miners; they have a very high estimated production before 1900 and a comparatively low known production since that time. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Engineering News
Author: Reservoir Fish Habitat Management
Author: Leandro MirandaPublisher:
ISBN: 9780692798720
Category :
Languages : en
Pages : 306
Book Description