what years for snowy vehicles?

Not a story about Land Rovers but about motorbikes and beer.
My Grandpa worked on the Snowy River Hydro and the story he used to tell me was how bad it was riding a bike back to camp from pub, and how you couldn't have a beer.
Back in days cartons weren't cartons but they were held together by mesh so if you were thirsty on the ride back to camp you had to wait. Because an opened slab was no good sitting on the tank of motor bike as the stubbies would end up on the track.
My grandpa had some good stories.:D

This photo may be of interest.
Cooma workshops, 1950's.