Versa-Drill International Inc. manufactures a variety of drill rigs, including the V-100. Mounted on a Navistar 4900 6 by 6, the base machine is powered either by a Navistar DTA-466E Diesel 250 Hp at 2,300 rpm or a Navistar 530E Diesel 300 Hp at 2,000 rpm. The rig has a pullback of 23,000 pounds, pulldown of 18,000 pounds and a finished weight of 34,000 pounds (less tooling). Versa-Drill International Inc., Card No. 272