I was always under the impression that the AT designation stood for AeroTem....if I'm wrong please correct me.
As per Richard saying that the actual site of the drills wasn' t exactly as shown on that pic, I thought that I would go the the Ontario Claim map site and enter the NAD 83 ZONE 16 Co-ords of hole #3 just to see what I got. Pick on my attached URL to see. You can see that that actual location of AT-12 is east and maybe a little south of the map on the website. Also, if you look at my claim map pic you will see the the website map is warped...if you visually compare the claim map boundaries. The location on the website is Mapper error.
URL...scroll to see 2 views;
http://docs.google.com/View?docid=dc...
GL
Bob