National Filling Factory No.6, Chilwell, c.1918 Facility Type & Function: National Filling Factory (N.F.F.) – TNT and ammonium nitrate mixing mills plus filling of 4.5 in to 15 in shells plus naval mines and aerial bombs. Brief History: A secluded 208 acre site, sheltered by neighbouring hills, at Chilwell, near Nottingham, was chosen for the location for … Continue reading National Filling Factory No.6 – Chilwell