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:
++++
Cooperative Mining Series: Bulletin 1]-33, Volumes 13-16; Cooperative Mining Series: Bulletin 1]-33; University Of Illinois (Urbana-Champaign Campus) Dept. Of Mining Engineering
Illinois State Geological Survey, University of Illinois (Urbana-Champaign campus) Dept. of Mining Engineering, University of Illinois (Urbana-Champaign campus) Engineering Experiment Station, United States. Bureau of Mines
ThriftBooks sells millions of used books at the lowest
everyday prices. We personally assess every book's quality and offer rare, out-of-print treasures. We
deliver the joy of reading in recyclable packaging with free standard shipping on US orders over $15.
ThriftBooks.com. Read more. Spend less.