The Explorer 1500 from Foremost Industries is a mineral-exploration rig that incorporates reverse-circulation drilling technology. It is mounted on a Foremost articulated carrier with large terra tires. The high-flotation terra tires help minimize environmental impact, while allowing the Explorer to travel at speeds up to 10 mph. The carrier deck can be leveled hydraulically to facilitate drilling on sloped terrain. Foremost Industries, Card No. 205