Yard switcher question

[nw-modeling-list at nwhs.org]

Hi,

I am modelling an N Scale N&W mine shifter / classification yard at a
fictitious location where a mine branch joins a mainline, set 1959.  Does
anyone know which locomotive would typically be used as yard switcher in
this type of yard.  Given the lack of N&W yard switcher models I would like
to use a either a road switcher or an old steam locomotive, could I get
away with this?

Thanks

Andy Thornton