Donald Pleasence as Doc Tydon

Gary Bond as John Grant

Chips Rafferty as Jock Crawford

Sylvia Kay as Janette Hynes

Jack Thompson as Dick

Peter Whittle as Joe

Al Thomas as Tim Hynes

John Meillon as Charlie

John Armstrong as Atkins

Slim DeGrey as Jarvis

Maggie Dence as Receptionist

Norm Erskine as Joe the Cook

Buster Fiddess as Charlie Jones

Tex Foote as Stubbs

Nancy Knudsen as Robyn

Dawn Lake as Joyce

Harry Lawrence as Higgins

Robert McDarra as Pig Eyes

Owen Moase as 1st Controller

John Dalleen as 2nd Controller

Colin Hughes as Stockman

Jacko Jackson as Van Driver

Carlo Manchini as Poker Player

Liam Reynolds as Miner

Nelson as The Fighting Kangaroo