From 1946 tractors were also built in Kilmarnock, with a large Massey-Harris factory present on the outskirts of the town. It later became Massey-Ferguson, before closing in 1980. Glenfield and Kennedy still survives albeit with a fraction of its former workforce, which at its height numbered in the thousands. Kilmarnock however is still home to the world famous Johnnie Walker's brand Scotch whisky. On the outskirts of the town is Scotland's first privately run prison, HM Prison Kilmarnock.