As reported by Alex Webster, on the Cannibal Corpse MySpace Blog : 

Hello everyone, Alex from Cannibal Corpse here checking in again from Mana Studios in St. Petersburg Florida. The last time you heard from us Paul had just finished the drum tracking, and we've made a lot of progress since then. Here's a brief rundown: 
The rhythm guitar recording was the next part of the session. We spent a lot of time on it, both on attaining a crushing sound, and also on achieving airtight performances.