A SEVERED power cable caused the lift failure that left 10 people trapped halfway up the outside of Glasgow's troubled Science Tower last month.
This is the conclusion of Swedish lift manufacturer Alimak, which supplied the specially-designed stainless steel rack and pinion lifts, following a site visit last week.
Its investigations are now focusing on what made the cable snap. Failure of the rack and pinion mechanism has been ruled out.
The stray power cable was also responsible for the malfunction of the second lift car, the company has confirmed.
Without the second car, fi re crews had to cut through the aluminum walls of the tower's emergency stairs and bridge the 600mm gap to the lift to rescue the trapped group. The operation took five hours.
The tower remained closed to visitors this week. Technical hitches have plagued the structure, which has spent more time closed than open since its inauguration in 2001.