The Philadelphia-based Army ammunition plant closed in the 1970s. It currently is the site of a high school, food supplier and other businesses.Frankford Arsenal in Philadelphia south of Tacony Street between Bridge Street and tracks of former Pennsylvania Railroad.Library of CongressJuly 23, 2026, 5:00 AM EDTThree longtime Philadelphia police officers developed the same rare cancer, and the similarities in their cases were hard to ignore. They all had spent years working in the department’s narcotics unit. They all died of glioblastoma, an aggressive form of brain cancer, within years of each other.Just a moment.We are getting your experience ready.