The United States Geological Survey (USGS) is a scientific organization created in 1879, and is part of the U.S. government. Their scientists explore our environment and ecosystems, to determine the natural dangers we are facing. The agency has over 10,000 employees that collect, monitor, and analyze data so that they have a better understanding of our problems. The USGS is dedicated to provide reliable, investigated information to enhance and protect our quality of life. This is one of their bulletins.

The United States Geological Survey (USGS) is a scientific organization created in 1879, and is part of the U.S. government. Their scientists explore our environment and ecosystems, to determine the natural dangers we are facing. The agency has over 10,000 employees that collect, monitor, and analyze data so that they have a better understanding of our problems. The USGS is dedicated to provide reliable, investigated information to enhance and protect our quality of life. This is one of their bulletins.

This is a reproduction of a book published before 1923. This book may have occasional imperfections such as missing or blurred pages, poor pictures, errant marks, etc. that were either part of the original artifact, or were introduced by the scanning process. We believe this work is culturally important, and despite the imperfections, have elected to bring it back into print as part of our continuing commitment to the preservation of printed works worldwide. We appreciate your understanding of the imperfections in the preservation process, and hope you enjoy this valuable book. ++++ The below data was compiled from various identification fields in the bibliographic record of this title. This data is provided as an additional tool in helping to ensure edition identification: ++++ The Geology And Ore Deposits Of The Bisbee Quadrangle, Arizona; Issue 21 Of Professional Paper; Geological Survey (U.S.).; Volume 21 Of Geological Survey Professional Paper; The Geology And Ore Deposits Of The Bisbee Quadrangle, Arizona; Frederick Leslie Ransome Frederick Leslie Ransome Govt. Print. Off., 1904 Science; Earth Sciences; Geology; Geology; Ores; Paleontology; Science / Earth Sciences / Geology; Science / Paleontology

Economic Geology of the Silverton Quadrangle - Originally Published in 1901 as USGS Bulletin 182 this publication is one of the rarest and most informative on the Geology, Mines and Ore Deposits of the Silverton Area in the San Juan Mountains of Colorado. All major mining districts covered along with over 100 mines discussed and may more prospects. Extensive information on the formation of the deposits. Now Back in print by Miningbooks.com