tender for steam crane

[nw-mailing-list at nwhs.org]

Having just finished watching a tape on train wrecks, I noticed in some 
shots the steam wrecking crane had a tender. This seems to make sense since 
it requires water and coal/oil. Would this be a common practice? What kind 
of tender did the N&W have back in the 40's and 50's? And would it be with 
the crane in 'waiting' ready to go at a moments notice?
Thanks,
Tony Burgess