The wall is long gone. That was when Gateway ran North to South. When they changed the facilities, it now runs South to North.
As for blower...
The 8mm belt was a B&M Powercharger 250. Was my first blower back in 1992.
The 14mm belt in that video was a Mooneyham 10-71 (18 strips), which has since been replaced by an SSI 14-71 B-Rotor with 30 strips.