The history of Guano Point is fascinating. In the 1930's a boater floating through the Grand Canyon discovered a bat cave 2,500 feet (760 m) below the rim. In the 1950's a company decided to mine the estimated 100,000 tons of guano in the cave, which is used for fertilizer.
They built a tramway using 30,000 feet (9,100 m) of cable to haul the miners down and the guano up. They had to replace large portions of the cable twice in its first year of operation, once due to a construction accident and because the original steel cable wore out after only a few months.
It turned out that the mining engineer's estimate of 100,000 tons of guano in the cave was 1,000 times too high. There were only 1,000 tons of guano, and the rest of the cave was limestone, which is worthless. Guano was worth $100 per ton at the time, so the enterprise had invested $3.5 million to access a resource worth $100,000. Oops.
Mining ceased in 1960. A short time later a U.S. Air Force pilot doing some hot dogging flying through the Grand Canyon clipped his wing on the cable and broke it, although he returned safely to his base. The federal government paid a claim for damage.
There at one time were plans to remove the ruins of the tramway, but people protested and saved this remnant of recent history. Guano Point is now a tourist stop on the visitor buses at Grand Canyon West, where the Skywalk is located, operated by the Hualapai native peoples.
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That is a bit of history I didn't know.
ReplyDeleteOops is right! ;-)
ReplyDelete