3 dead; Gunman at large after Calif. shooting

This is the building where it is believed that the shootings took place.

October 5, 2011 12:52:22 PM PDT
Authorities went door to door with guns drawn Wednesday in search of a disgruntled employee they say opened fire at a Northern California limestone quarry, killing three and wounding six, before possibly wounding another woman in an attempted carjacking.