Figure V-2 — Comparative Revenues From Mineral Leases on U.S. Public 

 Lands Onshore and on the Outer Continental Shelf 



Million Dollars 

 1,500 



ONSHORE 



L. 



1956 '57 



'58 '59 '60 



'61 '62 '63 

 Fiscal Years 



'64 '65 



'66 



'67 



'68 



'69 



(1) INCLUDES ALL INCOME ■ BONUSES. RENTALS. AND ROYALTIES 



(2) INCLUDES INDIAN LANDS WHERE MINERAL REVENUES WERE $36M IN FY '69. 

 SOURCE; DEPARTMENT OF INTERIOR 



mine, magnesium, and both heavy (DoO) and fresh water are extracted 

 from the water cokimn; sand and gravel, oyster shell, tin, heavy minerals, 

 and diamonds are dredged from placer deposits on the sea floor; sulfur 

 is recovered from the seabed by melting it with superheated water and piping 

 it to the surface ; and coal, iron ore, and nickel-copper ores are mined from 

 the subfloor in shafts driven seaward from land. Coal extracted from under- 

 sea mines accounts for more than 30 percent of Japan's total production and 

 more than 10 percent of Britain's. The value of minerals, both fuel and 

 nonfuel, produced from the sea in 1969 on a worldwide basis was estimated 

 to be over $7 billion (table V-2) . 



The ocean has become a significant source of several of the nonfuel 

 minerals used in our domestic economy. Sulfur extracted from two mines 

 off Louisiana constitutes 15 percent of U.S. production (and the bulk of 

 the world's total offshore production) of this valuable industrial raw mate- 

 rial. Recovery of chemicals from sea water, especially magnesium, bromine 

 and salt, has doubled during the last decade, and some 50 million cubic 

 yards of sand and gravel and 20 million tons of oyster shells are extracted 

 annually from the U.S. Continental Shelf. 



66 



