Oil and gas trapped underground can only be reached by drilling deep beneath the oceans and the ground. But these deposits may soon dry up. One alternative being considered is fracking, which requires fracturing the rock underground. Discover how people use fracking to harness the before-unreachable supplies of gas and oil beneath Earth's surface, the challenges of this form of mining, and the controversies surrounding it.
Crabtree Publishing Company
Fracturing Rock to Reach Oil and Gas Underground
Next Generation Energy
Education & Reference