©2011 BRADKEN ® 3 BKM SP MKT CS Opti-Trak EX2500 NACG Rev 0 Issue date – August 2011 OPTI-TRAK ® Crawler Shoes CASE STUDY Location Alberta, Canada Machine EX2500 Excavator Conditions Low Impact, High Abrasion Product Opti-Trak ® EX2500 Shoes CRAWLER SYSTEMS The sticky and highly abrasive oil sands, coupled with outside air temperatures ranging from –45 to + 35°C are challenging environments for NACG’s excavator fleet operating

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