A caver has been rescued after being trapped vertically underground at the Rat's Nest Cave in Canmore, Alta., in an operation that deployed volunteer-built underground radio technology for the first time.
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A caver has been rescued after being trapped vertically underground at the Rat's Nest Cave in Canmore, Alta., in an operation that deployed volunteer-built underground radio technology for the first time.
A caver has been rescued after being trapped vertically underground at the Rat’s Nest Cave in Canmore, Alta., in an operation that deployed volunteer-built underground radio technology for the first time.
Search and Rescue Alberta says the man became pinned in a tight spot known as the “Psych Squeeze” around 11:30 a.m. on Saturday.
The Alberta/BC Cave Rescue team was called in, and hammer drills were used to remove rock, with the caver eased out in a process measured in “inches per hour.”
Search and Rescue Alberta says the man was freed around 10 p.m. and he finally emerged from the cave around midnight, after an operation involving 13 cave rescuers, 10 firefighters and two Kananaskis Mountain rescue members.
The rescue group says a cave radio that transmits signals through rock was used in a live operation for the first time.
The technology was developed by members of Alberta/BC Cave Rescue, which is part of Search and Rescue Alberta, in response to the difficulty of using traditional communication methods like phones, radios or GPS underground.
“By providing reliable text-based communications from deep inside caves to the surface, or between different locations in a cave, teams can now deploy with equipment that is purpose-built by the rescuers who will use them in the field,” Search and Rescue Alberta says in a news release.
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It says the new radios are smaller and lighter than traditional analog cave radios, which use technology that can no longer be repaired.
The rescue team now has a cave radio system using technology known as QDX-M, capable of communicating through more than 500 metres of solid rock, the release says.
“Such units are not currently available commercially at an affordable cost, so the benefits of volunteer design and construction work by cavers with electrical engineering and amateur radio backgrounds has been considerable,” it says.
Source: Read the original article on www.winnipegfreepress.com
