INTAI{D TUMBTR COMPANY

livers 4900 lbs. thrust against pendulum action. In simple principle, motors actually increase traction of rig as load increases by tending to "walk," or pull themselves up the front section of the huge wheels. For further traction (and balance) huge 30-foot blade can be extended out in front of vehicle.

Picture of the scale model above shows approximate size of vehicle in relation to logging truck. Actually, toy truck is not scaled down quite as much as model, so in real life, logging rig would appear even smaller in relation to full scale "Buggie."

Wheels on the full-size model now under construction will measure 24 f.eet in diameter and 4 feet in width. Inside clearance (for straddling logging rigs) will be 16 feet wide by 12 feet high ! The "Buggie" will weigh out at 32 tons empty and is designed to carry a staggering 170,000 lb. payload ! Going even further, Inventor Manning expects the "Buggie" to develop a herculean drawbar pull of 2X),N0 lbs.-nearly five times its own weight !

For earth-moving, the rig will carry a 96-yard. payload, and for fire fighting, machine is designed to carry 42,425 gallons of water-plus 10 men in each wheel. Machine is also waterproof in depths up to 8 feet.

Look out, "Babe !" It looks as if you're in for some real competition !

Cement Associolion Ups Poir

John M. McNerney, district engineer for the Portland Cement Association's Los Angeles office, has been appointed manager of the association's Western regional office, also located in Los Angeles, effective November 1. McNerney will hold both posts until a new district engineer is designated and succeeds Hugh D. Barnes in the regional position. Barnes has been named in the new post of supervisor of field promotion and assumed his duties in Chicago November 1.