Acknowledgements This portion was prepared by Captain (Ret’d) J.C. Oland late of the Royal Canadian Artillery and an Associate Member of the Mess. Technical advice was requested from Several sources. We wish to give a special thanks to Mr. John Bates, Mr. Roderick MacLean, Mr Wayne Moug and to Major (Ret’d) Wayne Shellnut CD. Dated at Halifax, N.S., 29 February 2004