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Rock Climbing Photo: Bolt testing done in Muir Valley.
Id# 105963752, 2000 x 1330px View full size
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By ferrells
Jan 3, 2009
im curious what's happening here. any chance someone could explain it to me? Sean
By cjdrover
From: Watertown, MA
Feb 1, 2011
Sean - the pic is of a short ~10 foot outcropping that everyone hikes past on the way in. The landowners did some testing of various bolts on the Corbin sandstone to determine what was most appropriate for use in the area.
By Ty Harlacker
From: Albuquerque, NM
Apr 29, 2011
That's some bomber sandstone; except for those two that pulled. Looks like one of the hangers failed as well. I wonder how much force was applied before fail. Was a load-cell used?
By S. Neoh
Apr 29, 2011
This post is but one of several if you choose to scan the web for more on the pull-tests done at Muir -
redriverclimbing.com/viewtopic...
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Bolt testing done in Muir Valley.

Submitted By: Ladd on May 18, 2007
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