The australian hard rock underground mined are an abusive vehicle environment, rockier than Golan or Afghanistan. And generally full of sulphide ores that rapidly corrode alumunium etc. The miners get paid bonus by production, and drive the vehicles rough and hard. Sure the componentry is designed for serviceability (not arms resistence) but the general construction of bisalloy high strength and high hardnesd steels, along with diesel and hydraulic expertise, equates to a solid foundation for manufacturing competency. I doubt that Canberra cares but 67% Australian content implies superior uptime and training results for the users. Train hard, drive hard, perform well.