One of the SA members is PM Fourie (he was last active in Sept.), but I can't recall the other; if memory serves me, along with an interest in artillery he was also into handcrafting custom knives. This thread was just burning up wires on the board, so I thought I'd add a few more pics.
flickr from YAHOO Photo by joburg
Wikimedia Commons
Wikimedia Commons I think it's novel how they constructed the new building around the excavated ruins of the battery.