IV CONTENTS 



The Enterprises Built up by Andrew Carnegie. 



BY Charles M. Schwab 147 



The Steel Trust and Its Makers. 



BY Charles S. Gleed 157 



Center of the World of Steel. 



BY Waldon Fawcett . , 165 



Steel Hardening Metals. 



BY Joseph Hyde Pratt 177 



Coal. 



BY Edward W. Parker 182 



The World's Need of Coal and the United States' Supply. 



BY O. P. Austin 186 



The Connellsville Coke Region. 



BY Frederick Edward Saward 193 



Gold and Silver Mining. 



BY Isaac A. Hourwich 202 



Gold and Other Resources of the Far West. 



BY J. A. Latcha 215 



Precious Metals Recovered by Cyanide Processes. 



BY Charles E. Munroe 227 



The Inflow of Gold. 



BY Ellis H. Roberts 242 



World's Supply of Copper. 



BY Joseph M. Sheahan 252 



Copper Ore in Different Parts of the Country. 



BY Arthur Lakes 260 



Bauxite. 



BY Joseph Struthers 266 



Lead and Zinc Ore. 



BY Isaac A. Hourwich 273 



Metal Working Machinery. 



BY E. H. Sanborn 283 



Quicksilver. 



by Joseph Struthers.. 289 



