Roman siege engines BC, and surrounded by Roman fortifications. As was standard siege technique at the time, "ballistae" were placed up in the towers with other soldiers armed with either bows or slings. The onager was a post-classical Roman siege engine, which derived its name from the kicking action of the machine, similar to that of an onager (wild ass). It is a type of catapult that uses torsional pressure, generally from twisted rope, to store energy for the shot. The onager consisted of a frame placed on the ground to whose front end a vertical frame of solid timber was rigidly fixed;
Animal Justice Project taking place in laboratories all over the country by, or on behalf of, British Heart Foundation (BHF) and Cancer Research UK (CRUK)." They believe that many people are unwittingly funding animal experiments by donating to these charities. Animal Justice Project Animal Justice Project is an international pressure group that campaigns against vivisection and other animal industries based on what the group identifies as speciesism. The organisation was launched on 1 December 2014 by a group of campaigners and activists from the UK and Europe, with backgrounds in grassroots activism and professional animal rights. The organisation is currently active in both