Then he goes to work on her face, the heel of his boot raining downblows on her with the indifferent brutality of a jackhammer.

CNN: Books - Excerpt: 'Flint'

It's like trying to do heart surgery with a jackhammer.

NPR: A Military Wife on Bush Plan for Troop Increase

We want to use it as a virtual jackhammer.

FORBES: Apple's Airport Meets The Concrete

"To us it just looked like somebody came along the surface of Mars with a jackhammer and lifted up the sidewalk that you might see in downtown LA at a construction site, " he joked.

BBC: Curiosity Mars rover beams images of ancient streambed

Kid seemed to be holding a jackhammer.

NEWYORKER: Tenth of December

The US Army-funded research seems promising but is obviously still in its infancy -- one of the designs the researchers demonstrated is half the size of a penny but pumps out 120dB of noise (about the same as a siren), while another bumped out over 135dB, (which is roughly equivalent to a jackhammer).

ENGADGET: Tiny thermoacoustic engines pave the way for screaming gadgets