The occupation, 'Earth Drillers, Except Oil and Gas', include: Auger Operator, Blast Hole Driller, Boring Machine Operator, Churn Drill Operator, Churn Driller, and other titles.Earth Drillers, Except Oil and Gas operate a variety of drills such as rotary, churn, and pneumatic to tap sub-surface water and salt deposits, to remove core samples during mineral exploration or soil testing, and to facilitate the use of explosives in mining or construction. may use explosives. includes horizontal and earth boring machine operators.