Bones may be from US grave of 57 Irish immigrants

Researchers may have discovered a mass grave for nearly five dozen 19th century Irish immigrants who died of cholera weeks after coming to Pennsylvania to build a railroad.

Historians at Immaculata University have known for years about the 57 immigrants who died in August 1832, but could not find the actual grave. Human bones discovered last week near the suburban Philadelphia university may at last reveal their final resting place _ and possibly allow researchers to identify the remains and rebury them.

The woodsy site where the bones were found is known as "Duffy's Cut." It is named after Philip Duffy, the man who hired the immigrants from …