With the LB 20 Liebherr has introduced an additional model of its new series of large diameter rotary drilling rigs. The concept of the LB series is based on Liebherr’s many years of experience with special deep foundation applications and take into account the toughest demands, which are nowadays placed on modern rotary drilling rigs. The LB series rigs are designed for operations using Kelly equipment, continuous flight augers, double rotary heads and soil mixing equipment…more at Liebherr.com