SMITHSONIAN INSTITUTION 
UNITED STATES NATIONAL MUSEUM 
Bulletin 102, Part 4 
THE MINERAL INDUSTRIES OF 
THE UNITED STATES 
COAL: THE RESOURCE AND ITS 
FULL UTILIZATION 
BY 
CHESTER G. GILBERT 
AND 
JOSEPH E. POGUE 
Of the Division of Mineral Technologyy 
United States National Museum 
WASEIINGTON 
GOVERNMENT PRINTING OFFICE 
1918 
