where in 1983 he graduated with a degree in Mechanical Engineering. After graduation, he headed to Yosemite where he worked as a member of the search and rescue team, and pioneered many new routes.

Equipment maker

While climbing on Half Dome, a failure of a portaledge nearly led to the death of Middendorf and his companions Steve Bosque and Mike Corbett, and Middendorf became interested in better designs. Middendorf

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