Cloud Chambers - the pre 1963 bit, from Jim McCaughan

Commenting on Tony Parkinson's info:

The pre 1963 bit: The first chambers to come to Sydneywere made in Dublin alright but came from Jamaica and were operated there by John Lehane. The Canadian chambers were set up on Sulphur Mtn Banff with some assistance from me in 1962. When they were finally operational in the latter part of 1962, I ran them until end of January 1963. Brian O'Donnel, an Irish PhD student from Calgary, continued to run them at Sulphur Mtn till 1964, then transferred them to Calgary, where he repeated the experiment at the lower altitude. Only when he finished with them did they come to Sydneyas Sydney, through Mac, had paid for them. Brian O'D's thesis was dated 1967 so it must have been about then that they came to Sydney.

Jim.