A one-of-a-kind design found nowhere else in the world, the hinged mine skips were installed into the shaft compartment with only minimum adjustments to the hanging skip and made for easy alignment of the bail channels for equal wear distribution along all the mounted guide shoes. The El Porvenir Mine is considered to be Peru’s deepest underground mine and is located 321 km from Lima. Owned by Compania Minera Milpo, the 1,250-metre-deep mine produces lead and copper concentrates along with gold and silver content as well as zinc. Due to the mine’s extremely tight peripheral conditions around the shaft collar, Compania Minera Milpo determined that a sequential vertical installation was not an option. They then contracted Wabi Iron & Steel Corp., and relied on them to develop the hinged concept to facilitate one-piece skip installation.
http://www.wabicorp.com/wabi-iron-steel-corp-develops-hinged-mine-skips-mine-peru/
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