I don't know that answer, but I thought 17 was more difficult access than other areas around Gillette. I tried it a couple years ago and a lot of the blm was closed from public access. Either blocked by private or leased out and no easement. I didn't research the smaller blocks a whole lot as far as access. There are lots of antelope there, but of the Gillette area units I thought that one had the least access if that helps.