I am the great granddaughter of four coal miners, all Irish immigrants, who worked in the hard-coal country of eastern Pennsylvania. Two of them were killed in roof falls, and one died of pneumonia in his thirties. Both of my grandfathers worked at the coal breaker picking slate out of the coal chutes before they were 12. My father graduated with honors from the University of Scranton and worked in an office near Wall Street. From despair to success in three generations. Celebrate labor!