Everything is checked on every lift, every day, before every morning start. It gets checked by "Mountain Ops". "Mountain Ops" are NOT the "lifites" that you see standing at the top and bottom of the lift and saying "have a good day" with foreign accents. "Mountain Ops" are the guys in black, that you see with snowmobiles. They are all qualifed tradesman, ie electricians. They are the ones who really run the lifts, qualified and highly trained with years of expereince. They go up several hours before every start up by snowmobile and do a full check on everything...they even check the cable splice every day.
So on the Gondola all of the safety systems are checked daily (ie the check that if they had to they could winch the gondola to the towers) etc. Once at the towers, evac would be pretty straight forward for pro patrol.
Like Mountain Ops WB Pro Patrol are not employees from Aus or the UK on their GAP year. They are highly qualifed and trained, years of experience, some are ex-miliatry SARTEC, some are paramedics, etc.
Having said all that....unfortunatley WB does not have a flawless safety record, but I do think they do an excellant job overall.