S e c t i o n 7 - P a g e 4 May 2013 DYNA ® T ork Bolt DYNA ® T ork bolt is designed with a spiral mixing blade to ensur e ultimate mixing of DSI r esin in the bor ehole. This blade design has a dual pr opose: to mix the r esin pr operly and pr ovide anchorage for static gr ound support. The cone is designed to yield and transfer dynamic loads into the r esin in r ock burst conditions, absorbing the ener gy thr ough contr olled deformation. This ploughing ef fect thr ough the r esin will ensur e that most of the kinetic ener gy in a r ock burst is contained within the r ock-mass. The DYNA ® T ork bolt is the ultimate Dynamic Rock Support Solution for deep mining wher e it pr ovides pr oper anchorage in a r egular static mining envir onment, and ultimately yielding support in dynamic r ock burst conditions. T echnologically Advanced –Unique Mixing Helix – Patent Pending Dome Plate 1055 Modif ed Smooth Bar Dynamic Bolt Energy Absorption: 15 kJ tested, 23 kJ tested, 30 kJ tested 1055 Modi ed Steel Elongation 10Y ield Str ength 448 MPa 93 kN 65.000psi 20,904 lb Ultimate T ensile Str ength 660 MPa 143 kN 65,700 psi 32,160 lb Recommended Domed W asher Plate 6.3 mm 150 mm 150 mm 1 / 4 " 6" 6" Thr ead Diameter 19.05 mm 3 / 4 in Bor e Hole Diameter 33 mm Hemispherical Pinnut (dia len hole dim) 46 mm 18 mm 19 mm www .dsiundergr ound.com