Before breaking ground, call your local utility companies and outline your plans. Have them come to the site and locate and mark any underground water, gas, electrical and drainage lines, and telephone and television cables. Cutting into one of these can disrupt service and possibly injure or kill you. These line markings are only approximate, so to be on the safe side, avoid digging within two feet of them. If you need to dig an ordinary hole for, say, planting a large shrub, the best tool to use is a pointed spade shovel.
An earth auger , earth drill , or post-hole auger is a drilling tool or machine used for making holes in the ground. Metal augers have been in use since the Middle Ages to drill holes in wood. In the 19th century, the hand-operated earth auger became a common farm and construction tool in the US, and several inventors submitted patents for them. Hubby of Maysfield, Texas, consisting of an open hollow cylinder with two blades at the bottom edge . The first known power earth auger was built in by John Habluetzel , a farmer in Wamego, Kansas , from parts scavenged from other equipment, including a 7-inch helical blade from a screw separator.