Shifting Seashore Sand

By H. SCOTT HALL M.I.Mech.E., M.I.R.T.E. S EA sand is being removed from some beaches at the rate of 200 tons per day, but it is not being taken away, as might reasonably be......

Leyland Oil Engine Powers Excavator

T HE standard engine for a new British design of excavator, the Smith 21, is the Leyland 7.4-litre oil engine, with certain adaptations for this work. The excavator is a......