Marine plywood covers most of the dome.
RASC Hamilton Centre 1979_07_marsh
Scanned by Colin Haig 2006-03-18 to 2006-04-08
Scanned with Nikon Coolscan V ED.
These slides, from the construction of the Hamilton Centre Observatory, had a date on the slide mount, "1979 07 Marsh." I am not sure when actually taken or when developed. Abbreviations: LVP - written on the slide, I think they are the initials of the photographer. LVP = Leslie V. Powis.