A 17-year-old Mabel Lethbridge lied about her age to get a job cleaning detonators at the No. 7 National Filling Factory in Hayes, Middlesex. It was a dull job, and when on her sixth day of work a poster appeared requesting staff to work in Amatol Filling Section - the Danger Zone - she immediately volunteered. Injury and deaths were frequent due to novice workers and highly explosive materials. On Mabel's ninth day of work, a shell exploded and her left leg was mutilated beyond repair. It was later amputated, and she was awarded a Medal of the Order of the British Empire (known as a BEM nowadays) for her courage and devotion to duty.