SMITHSONIAN INSTITUTION 
UNITED STATES NATIONAL MUSEUM 
Bulletin 102, Part 5 
THE MINERAL INDUSTRIES OF 
THE UNITED STATES 
POWER: 
ITS SIGNIFICANCE AND NEEDS 
BY 
CHESTER G. GILBERT 
AND 
JOSEPH E. POGUE 
Of the Division of Mineral Technology 
United States National Museum 
WASHINGTON 
GOVERNMENT PRINTING OFFJCE 
1918 
