Firing with fin-stabilized rockets 12, 15 and 21 cm, fin-stabilized shells 10.5 and 15 cm, mortar bombs with sabot 15 cm / expert Eng.Dr. Schicha … By air to battle : the official account of the British first and sixth Airborne Divisions / prepared for the Air Ministry by the Ministry … Report on boxes and wooden equipment at Penfield Explosives Factory, July 1943 / C.E. Dixon - Redesign of ammunition boxes : progress report no. 23