A 1½-ton tower is quickly installed with ´copier´s help

In a demonstration on Sikorsky Flight Field, Stratford, Conn., last month, an S-61 helicopter lowered a 90-foot, 2,700-pound Y-shaped aluminum tower to a seven-man ground crew who fixed guy wires to anchored footings. The entire operation took about 4 minutes. The Ytower, designed by Alean (Aluminium Limited of Canada), is expected to replace the V-shaped aluminum tower pioneered by this company in 1959.