The leader of the expedition on which a boy was killed by a polar bear has told an inquest the group had been supplied with an incomplete tripwire system.
The missing materials meant they had to set it up in a triangle formation rather than the advised rectangular shape, 31-year-old Michael Reid said.
He explained that his group also had to improvise using a paper clip to modify the trigger system because the brass fittings were missing.
He said: "The tripwire system in base camp worked inconsistently, the system that we tested at the ice-climbing camp on our first or second night out from the base camp operated 100% when we tested it."
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