Is the rumbling chute still there?

I'm pretty sure it's gone but I'm not completely certain. I'll check the next time I'm over there. Now that the clock mystery is solved I'd really like to find out what sets off the bells? Are they connected to some sort of master clock that causes them to ring at the correct times? Also I'm not sure what voltage the bells operate on? The ones at Nob Hill were quite large so I'm thinking 120v.