Some of the various types used on the fires in OZ are as follows:
AS350B3
EC145
Skycrane
S-61
Bell 212
Bell 214B
BK117
Mil-8
SH70 Seahawk
AS350B2
Havent really seen much of the smaller stuff used for anything other than flying the air attack officers etc.
While most of the heavy stuff comes from overseas there are a couple of operators within Australian who are starting to build up the medium/heavy capabilities within country.
Ned