Walter Energy now owns all the land that used to be owned by US Pipe. Walter Energy's land division was United Lands a few years ago, but that may have changed by now.

I would use the following Walter Energy contact number and ask for the land division contact information:

(205) 745-2000

Don't ever assume you can hunt without permission. If the company representative tells you that you don't need a permit to hunt (unlikely), get his name and keep it for future reference in case you get checked by a game warden.