110, 



ILLUSTRATIONS 



Page 



FIGURE 1 - Location of the Principal Deposits of Rock 



Salt in the United States 114 



FIGURE 2 - Area in New York Underlain by Salt 115 



FIGURE 3 - Area in Pennsylvania Underlain by Salt 116 



FIGURE 4 - Area in Ohio Underlain by Salt 118 



FIGURE 5 - Area in Michigan Underlain by Salt 120 



FIGURE 6 - Area in Texas and New Mexico Underlain by Salt 122 



FIGURE 7 - Installed Capacity of Electric Utility 



Generating Plants - United States - 1920-1954 130 



TABLE I - Salt - Production by States - 1953 - 



Short Tons 124 



TABLE II - Rock Salt - Estimated Production by States - 



1953 - Short Tons 127 



