The first seismograph was built by Zhang Heng nearly two millennia ago, in the days of the Han Dynasty. It could indicate the general direction of an earthquake’s epicenter by dropping a bronze ball ...

This class demonstrates how to operate efficiently using firefighter safety research to enhance fireground tactics. Controlling the flow path is the cornerstone of the course. Students receive ...

A Note from Jim: The stated objective of this story is to introduce you to some notions that may be of imme-diate help to circle track engines operating under rules that allow non-OEM parts. It is ...

UL Firefighters Safety Research Institute – UL FSRI Advisory Board Member, Philadelphia Fire Commissioner Adam Thiel discusses tactical considerations to avoid getting caught in the flow path while ...