The Gunbarrel Road Construction Party (GRCP) was the name bestowed upon a team of road builders by Len Beadell in 1955, after which the well known outback track Gunbarrel Highway was named. Over a period of eight years, Beadell and the GRCP built more than 6,000 kilometres of dirt roads in remote areas of central Australia for the Weapons Research Establishment at Woomera, South Australia. By the time they had completed their work in December 1963, the GRCP had built eleven major roads in twenty-four separate stages across South Australia, the Northern Territory and Western Australia.