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I-90 Bomb Tram Hut | by WSDOT
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I-90 Bomb Tram Hut

A unique method for setting off avalanches is a ‘bomb tram’. Inside the brown, tarp-looking huts on top of the signs near the summit are contraptions that look like exercise bikes with a cable pulley system connected to the pedals. Crews suspend explosives from the cable pulley system and pedal until the explosives reach the top. They release the explosives and bring the snow down the mountain.

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Taken on February 6, 2008