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Show Modern-Prospect- Z3 C2 LZ3 EZXCZI Discover Chemical ors' Bonanza in Briny Waters of Great Salt Lake Tfie briny water of Great Salt pake are attracting a new breed of prospector! to a great chemical rush. The modern prospectors have no mules or picks, but Ihey are armed with slide rules, patents, and lakeshore leases. Jead-- . chemical ing companies. The lure is minerals valued at rnpre than $80 billion. Every ear some two million tons of mineral salts are leached from nearby i mountain?, washed by streams iinto Great Salt Lake. nd concentrated by vaj)ora-4ioThe lake water has a mineral content of 27 per cent, several times' saltier than the iicean. Mineral Rich Water The water contains sodium fhloride, sodium sulfate, magnesium sulfate, potash, lithium, and chlorides of magnesium, calcium, and potassium. Thus far, only sodium chloride, or common salt, has bee taken from Great Salt Lake in com JTheyjepresent thenaUon'i n. mercial quantities, the National Geographic Society says. In Recent years, however, new chemical extraction meth--f ods and cheap electric power have made it economically feasible to exploit the other minerals. Work has begun on a huge plant that will extract magnes ium chloride. Geologists estimate that the lake holds enough magnesium to supply the United States with the metal for the Great Salt Lake's 1,500 square I the brine is peculiarly tnvigorat- miles are the remnant of prehis- - ing. Fits Hugh Ludltfw, a 19th- toric Lake Bonneville, the huge century journalist, was one of inland sea that once covered the first to extol the tingling most of western, Utah and parts charms of Great Salt Lake: of Idaho and Nevada. Receding "It . . , gave me a tonic senIce Age glaciers left a lake 350 sation of a, brisk shower bath. miles long, ISO miles wide, and I felt a pleasant pungent about a thousand feet deep, 1.1 sense of being in pickle, such as time, a great portion of the lale a gherkin might drained through a breach in its experience in a pickle packer's natural basin at its northern aristocratic bath of condi-ment- s. next 2,000 years, New Recreation lakeside recreation will be developed, too. Receding waters have left the old beach resorts high and dry, but engineers hope to create new beaches from finely ground rock, or tailings, from Kennecott Copper's mill. As a test, tailings will be pipepumped through a line to form a beach and jetty. If the experiment is successful, the waste rock powder may be used extensivelly for landfill and diking. No Outlet As the present lake has no outlet, it loses,, water only by evaporation. The per centage of salts has steadily increased SEPT- - 14A Sunday Herok j , ... end. -- , as less and less water has flowed into the lake from the three major streams feeding it. To day, at low water, Great Salt Lake is saltier than the Dead Sea. Its average depth is only - feet 13 The water is remarkably txtj hmn: The brine is so heavy that incoming fresh water floats on the surface for miles before gradually sinking. In winter, the fresh sheets of water sometimes freeze, and buffeting winds pile I up icebergs 3r feet high.The huge ice chunks once menaced, not shipping, but railroad trains that cross an arm of the lake on a wooden trestle. The bridge since has been replaced by a solid dike, - n i, w f r fen mm ujn . fi - n. ri II m Ii Y ftwi day W W ins p M 1 it U SI I 'fei m VI . 1 month SUP if.' 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