Rawks

Abbey begins by listing the types of rock that can be found in the Southeastern Utah soil. It is a list of observations that led many individuals and many large companies to set up mining companies in Southeastern Utah after a man struck it rich mining for Carnotite. Mr. Graham sold Mr. Husk a share of a promising plot of land and tasked him with finding the precious rock. Mr. Husk notices that his wife is becoming distant, probably because he just mortgaged their entire life and decided to move to Utah so he could dig for rocks... I'd be mad too...
As Husk rides in Grahams airplane for the first time he sees the horizon tilt as Graham avoids a tall rock formation. The land that was once on his left was replaced by an enormous blue sky and the ground on his right seemed to loom closer than ever. Graham experiences a similar shift after killing Husk. He is trying to dump Husks body by driving a truck over a cliff with the body inside, but he gets caught and falls off the cliff as well.
Billy manages to escape from Graham but ends up dying an even more painful death than he would have received had Graham shot him. Doctors try to save him but  his burns are too severe and he is too weak to recover. Mrs. Husk moves back to Texas with her daughters and is confronted by a lawyer who tries to coerce her into selling her 40% share of the Hotrock Mountain Mineral Development company at a fraction of its' total worth. From here I assume she lives a comfortable life with her daughter and the $100,000 she just got from the lawyer.