Ground Support products from DYWIDAG- System International (31/12/2007)... Posimix Resin Bolt System, Tension Jack/Pull Test Kit. And also Cable Bolts plain & Bulb, CBJ-1 Tensioning Jack, Cable Tensioner Mark 2, HI-TEN Strand Bolt, Wedge Anchorage. A range of Friction Stabilizers and Expandable Bolts. DYWIDAG ...