Departments of Supply and Works. The main units involved were detachments from No. 5 Airfield Construction Squadron RAAF, and the Army's 7th Independent Field Squadron, 17th Construction Squadron, with elements of the Royal Australian Electrical and Mechanical Engineers, Royal Australian Corps of Signals and the Royal Australian Survey Corps. Civilians came from the LRWEs at Salisbury and Woomera. The RAAF also provided ten Avro Lincoln bombers based at RAAF Woomera and RAAF Richmond for air sampling, and two Dakota transports based at Woomera for ground contamination surveys. The RAF provided a lone Canberra bomber for cloud sampling. The United States Air Force (USAF) had two Boeing B-29 Superfortress bombers and two Douglas C-54 Skymaster transport aircraft based at RAAF Richmond for radioactive cloud sampling. A five-man Australian mission consisting of Lucas, Gates, Group Captain Alfred George Pither (the LRWE Range Superintendent), Frank O'Grady (the Superintendent of Engineering at LRWE Salisbury), and a representative of the Australian Security Intelligence Organisation (ASIO), visited the UK in February 1953 to discuss the arrangements for Totem. There was a week of discussions, culminating in the Australians attending the second meeting of Totex. Lucas informed the people at Fort Halstead, where Penney's High Explosive Research team was based, that their plan for a temporary village of trailers had to be discarded. Lucas told them that the trailers would not be able to make it over the first sand hill. Instead, Australian Nissen huts would be used for the offices and laboratories, and test personnel would be accommodated in tents. Lucas was able to allay fears about the supply of water, which would not only be required for drinking, but also for decontamination of personnel and equipment, and the processing of the film badges which registered how much radioactivity people had been exposed to. Lucas was able to inform them that adequate supplies of bore water would be available, although a distillation plant would still be required. The UK team also explained that in addition to the two atomic tests, there would be a series of subcritical tests. The isolated location and poor roads meant that only of the of equipment needed for the test arrived by road, the bulk arriving via the airstrip, which was quickly constructed on the site about north west of the test field on a dry lake bed. This required a much greater air transport effort from the RAF and RAAF