▁broke ▁into ▁the ▁man uf actory ▁of ▁the ▁Great ▁Western ▁Gun - Work s , ▁and ▁captured ▁ 2 0 0 ▁rif les ▁and ▁a ▁quantity ▁of ▁small - ar ms , ▁and ▁various ▁other ▁crow ds ▁s ack ed ▁all ▁the ▁other ▁places ▁in ▁the ▁city ▁where ▁arms ▁were ▁exposed ▁for ▁sale , ▁getting ▁about ▁ 3 0 0 ▁more . ▁Among ▁them ▁were ▁ 1 0 0 0 ▁mill ▁hands ▁from ▁B irmingham , ▁on ▁the ▁south ▁side . ▁ ▁The ▁ri ot ers ▁fell ▁upon ▁the ▁rail ▁yards , ▁set ▁fire ▁to ▁train ▁cars ▁and ▁engines , ▁and ▁prevent ed ▁any ▁effort ▁at ▁ex ting u ishing ▁them , ▁in ▁some ▁cases ▁at ▁gun point . ▁ ▁G arrison ▁of ▁the ▁round house ▁ ▁A ▁group ▁of ▁Philadelphia ▁Guard ▁soldiers , ▁finding ▁themselves ▁en velop ed ▁by ▁the ▁mob , ▁retre ated ▁and ▁took ▁refuge ▁in ▁the ▁round house ▁at ▁the ▁train ▁dep ot . ▁By ▁ 1 0 : 0 0 pm , ▁several ▁thousand ▁strik ers ▁surrounded ▁the ▁building . ▁For ▁a ▁time , ▁the ▁mob ▁avoided ▁the ▁position ▁for ▁fear ▁of ▁the ▁g arrison ▁opening ▁fire . ▁The ▁soldiers ▁saw ▁that ▁a ▁captured ▁art illery ▁piece ▁was ▁position ed ▁within ▁a ▁hundred ▁yards ▁of ▁the ▁round house ; ▁they ▁concentr ated ▁fire ▁around ▁it ▁to ▁prevent ▁the ▁ri ot ers ▁from ▁man ning ▁and ▁firing ▁it . ▁Fif teen ▁men ▁were ▁killed ▁in ▁the ▁ende avor . ▁ ▁The ▁soldiers ' ▁shooting ▁initially ▁dis su aded ▁the