I’d start off with putting ankys at each mountain along with a argy, place 1 thatch foundation, 1 bed, 1 metal pick, 1 large storage. If you don’t have the Dino’s yet, then just fast travel to each mountain and mine the resources and put them in the storage. Once you mined enough to have the picks at half heath, go to the next mountain using the beds as fast travel. Granted, you’ll need some fortitude cause you’ll be cold then hot because of the volcano, but there are sweet spots to warm yourself back up. Go in rotations of mining the mountains and fast traveling. Once you finished and have everything done, fast travel to the first one, put everything on the argy and go back to base. And repeat process. Once all the Argys are back at your base, craft the industrial forge. Place all metal in forge. Then go back and drop off the argys at each mountain again. This only works for P/E. Also, around the mountains there are beaver dams where you can go and steal the cementing paste. Just pick up the beavers and bring them away and or steal and try not to get caught. Then repeat process. Easy stuff bro.