9. What is NOT part of the fracking process that releases natural gas from sedimentary rock deposits? 5.3 Jackhammers pound the surface to fracture the underground deposits. Large drills bore long...

9. What is NOT part of the fracking process that releases natural gas from sedimentary rock deposits? 5.3

1. 
   
   
   
   1. Jackhammers pound the surface to fracture the underground deposits.
   
   
   2. Large drills bore long horizontal holes directly into the deposits.
   
   
   3. Pressurized water, chemicals, and sand are injected into wells.
   
   
   4. Chemical solution fractures the rock and releases the gas trapped inside.