What is Jackhammer?
[[File:US Navy 090818-N-0807W-092 Construction Electrician 2nd Class Eric Smith and Utilitiesman 2nd Class Kareen Vilbrun break down rocks with a jackhammer during a building renovation.jpg|thumb|right|250px|Man digging with a jackhammer during [[construction]].]] [[File:Digging in permafrost.jpg|thumb|right|250px|Man digging with a jackhammer to break the hard [[permafrost]] in [[Alaska]] to study [[soil]].]] A '''jackhammer''' is an object used commonly in [[construction]] for the purpose of breaking through the ground, or other things. ==Other websites== {{Commons category|Jackhammers}} *[http://www.explainthatstuff.com/jackhammer.html How jackhammers work] *[http://www.protoolreviews.com/news/hows-it-work-rotary-hammers/5969 How Rotary Hammers Work] [[Category:Construction]]