Lawsuit claims R.M. Palmer ignored warning before deadly explosion.

The family of a worker who died in a Pennsylvania chocolate factory explosion has filed a wrongful death lawsuit against R.M. Palmer Co., claiming the company ignored warnings of a gas leak. The lawsuit alleges that the 75-year-old, family-owned company "did nothing" after workers reported smelling gas, and that the explosion that killed seven workers and injured several others was "foreseeable, predictable, and preventable." The lawsuit also names gas utility UGI. Authorities are still investigating the cause of the explosion.