He soon got to working on developing and patenting a collapsible wire mesh and fabric container, now called Hesco bastion, to be used for building flood management and to limit erosion.In 1989, Heselden founded Hesco Bastion Ltd to manufacture containers of the same name; filled with sand or earth, they quickly found favor with the armies of several countries, as they allowed effective blast walls, barriers and revetments to be quickly constructed. Made in Hesco’s factory in Leeds, these were shipped in great numbers to conflict zones, including Kosovo, Iraq, and Afghanistan as well as later being used for flood defenses in New Orleans, Louisiana after Hurricane Katrina. He died on September 26, 2010 after the Segway he was riding plunged off a cliff and he fell 80 feet into the a river.