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 EARTHING 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.