- tent headframe
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шатровый копер
English-Russian dictionary of geology. 2011.
tent headframe
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Porcupine Gold Rush — An area involved in the Klondike Gold Rush was known as the Porcupine Mining District , but is unrelated. The Porcupine Gold Rush was a gold rush that took place in northern Ontario, Canada starting in 1909 and developing fully by 1911. A… … Wikipedia
