An improved snubbing unit including a snubbing unit base, a lifting assembly having a platform positioned above the base, a rotary table positioned on the snubbing unit, and a first slip assembly positioned on the rotary table. The first slip assembly further includes a base plate with a center aperture...http://www.google.com.au/patents/US20030066718?utm_source=gb-gplus-sharePatent US20030066718 - Snubbing unit with improved slip assembly
