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The Cadia work led on to many other projects in which we were asked to model of the foundation dynamics and machine interfaces for large mill installations such as Antamina, Collahuasi, RPM, Boddington, PT Freeport Indonesia. It also led to the failure analyses, measurement and remedial design of many large ring motors in gearless mill drives (GMDs) including the catastrophic failure of the ABB motor at Collahuasi. These projects also offered the opportunity to measure stresses in large SAG and ball mills including those at Collahuasi and Telfer. The data from the failure analyses and the mill strain gauging provides a means of calibrating our mill system analyses to real-world examples that exhibit failure or behaviour modes that must be avoided in new designs.