of philadelphia, the deriver to its east is the one i think most people tend to think of when think think of philly. the delaware is larger and happens to be the border between pennsylvania and new jersey. the schuylkill is inextricably tied to the identity of philly. in part the surest way to tell from an outsider is if they can look at this name, it looks like it should be pronounced sure kill or sweet kill. if you look at that and say the schuylkill, boom, are you from philly. easy, right now, dangling perilously over the schuylkill river in the middle of philadelphia is a crude oil tanker. this is one of several tankers that brings tens of thousands barrels of crude from oil-rich north dakota to a refinery in south philadelphia every week. early monday morning, this week, a train that had six cars loaded the highly volatile crude oil went off the tracks crossing the river, leading to this, rather