In the trenches. Bob Speck second from left, Barry Sherman in orange at right. (Is that Pete Ceravolo at left?) It may be Derek Baker next to Barry.

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: JMH - written on the slide, likely the photographer. John Hudak is likely the photographer according to Roger Hill.