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Seven Mile Conveyor Placed in Operation; Belt Vulcanized on Job (Industry and Power, Vol. 55, No. 5).--A seven mile long belt conveyor system, said to be the second largest ever constructed, was recently placed in operation to haul raw materials for construction to the Bull Shoals Dam on the White River near Flippin, Arkansas. The extensive transport system will operate cross-country in a series of 21 flights from quarry to dam site. Built in sections, the 36-in. wide belting is being spliced together on the job by means of a portable electric vulcanizer.
The series of main haul belts weigh 360 tons, comprising 250,000 lb. of cotton fabric and 470,000 lb. of rubber. Belting was furnished by the Goodyear Tire and Rubber Co.
Machinery for the extensive conveyor was manufactured by Hewitt-Robins, Inc., and consists of 13,888 rollers, each made up of three tube-shaped steel pulleys. Conveyor runs at 525 ft. per minute and delivers 650 tons of rock per hour.
When completed in December, 1950, Bull Shoals Dam will be the country's fifth largest water storage structure. More than 4,000,000 tons of rock and 1,800,000 barrels of cement will be required to construct the 283-ft. high barrier. The dam will act as a flood control, will irrigate 1,000,000 acres of land, and provide power to satisfy the present requirements of the cities of Little Rock, Ark. ; Tulsa, Okla.; and Springfield. Mo.
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