Security Agreement

Recorded: 2011-09-14 Received: 2011-09-14 Pages: 15

Assignor

DSI UNDERGROUND SYSTEMS, INC.

Executed: 2011-08-30

Assignee

IKB DEUTSCHE INDUSTRIEBANK AG

WILHELM-BOTZKES-STRASSE 1, DUSSELDORF, DEX, 40474, GERMANY

Covered Properties (12)

Friction Stabilizers and Roof Bolt Head Markings

Application: 12/221,815 →

Cable Coupler Having Retained Wedges

Application: 12/135,907 →

Ground Support Insertion Tool

Application: 12/080,100 →

Low Profile Mine Roof Support

Application: 12/058,294 →

Dome headed roof bolt

Application: 12/008,500 →

Roof Truss Shoe Having Wedge Retention Device and Method of Using the Same

Application: 11/548,170 →

Cable Coupler Having Retained Wedges

Application: 11/224,492 →

Wedge Barrel for a Twin Cable Mine Roof Bolt

Application: 11/204,703 →

Expansion Shell Assembly

Application: 10/822,455 →

Truss Shoe for a Mine Roof and Method

Application: 10/725,895 →

Wedge Barrel for a Mine Roof Cable Bolt

Application: 10/676,057 →

Expansion Shell Assembly

Application: 10/044,467 →