From the movie Tracks:
Man: Where you from?
Robyn: I grew up on a cattle station near Darling Downs.
Man: Oh, a Queenslander, eh? What'd you run?
Man: Hard country, that. Reckon she copped her share of drought, eh?
Robyn: Seven years.
Man: Muster through it, did ya?
Robyn: We went broke.
I figure it means something like "plow through," but can't find it in dictionaries. What does it mean exactly? And is it specific to Australian English?