Here’s a little trivia that my geography students might find interesting, the serious ones anyway. While visiting one of my favorite weblogs this morning, Ten Daily Things, I ran across a reference to another weblog, Speedhara.com, and a posting about the world’s biggest hole. According to the article, the hole is a diamond mine found near the Eastern Siberian town of Mirna.
Now, having grown up in the Great Salt Lake Valley, I know that Russia doesn’t have the world’s’ biggest man-man hole. This honor belongs to the United States. It’s the Kennecott Copper mine in Bingham Canyon. But, I have to admit, the Kennecott mine looks more like an huge canyon than it does a hole, as compared to the nearly-symmetrical pit in Siberia.
Here’s a picture of the Kennecott mine. It is the world’s largest man-made excavation (a better term than “hole” I think). Started over a hundred years ago, it pioneered open-pit mining operations. It is located 28 miles southwest of Salt Lake City. It’s 2.5 miles across and 3 quarters of a mile deep. The mine is so big that it can be easily seen from space shuttles in outer space with the naked eye. By comparison, the Mirna diamond mine is only about one-third of a mile deep and less than a mile across.
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