Earthing Drilling Earthing Drilling By Using Drilling Rig: Drilling into the soft and hard rock formations by using Dando Idrilling rig.Drilling diameter from 4″ to 6″.Drilling depth up to 60 m. Inclined Drilling By Using Drilling Rig: Drilling into the soft and hard rock formations by using KLR I & KLR II drilling rig.Drilling diameter from 4″ to 6″.Drilling depth up to 30 m.