Lettuce Harvesting By Tractorlorry O Ne Of The Latest...

motor vehicles is in connection with the harvesting of lettuce on a 1,400-acre estate near Yuma, Arizona, U.S.A. It is stated to have solved one of the major difficulties......

Hauling 30-ton Loads In The Andes

I N January, 1935, the manageinent of the Cia Minera Aguilar, of northern Argentine, met to consider an unusual problem. For a number of years this old-established mining......