ijMITHSONlAN INi> i 



tNITED STATES NATlUiNAL iviUbH-UM 

 Bulletin 102, Vol. 1 



THE MINERAL INDUSTRIES OF 

 THE UNITED STATES 



THE ENERGY RESOURCES OF THE 



UNITED STATES: A FIELD FOR 



RECONSTRUCTION 



By 



e HESTER G. GILBERT and JOSEPH E. POGUE 



Of the Dixfision of Mineral Tethnology 

 United States National Museum 



MAY 17 



washington 



g(jv£rnment printing office 



1919 



