▁Labor atory ▁in ▁New town bre da ▁was ▁forced ▁to ▁drive ▁a ▁car ▁l aden ▁with ▁explos ives ▁to ▁the ▁building . ▁The ▁explos ion ▁caused ▁moder ate ▁damage , ▁and ▁operations ▁res umed ▁quickly . ▁The ▁Labor atory ▁would ▁be ▁the ▁subject ▁of ▁one ▁of ▁the ▁largest ▁I RA ▁bomb ings ▁in ▁ 1 9 9 2 , ▁when ▁a ▁ 1 , 7 0 0   kg ▁van ▁bomb , ▁abandoned ▁in ▁the ▁comp ound ▁par king ▁lot , ▁demol ished ▁the ▁facilities ▁and ▁caused ▁w ides p read ▁damage ▁within ▁a ▁radius ▁of ▁ 1   km . ▁ ▁The ▁proxy ▁bomb ▁was ▁used ▁by ▁Ul ster ▁loyal ists ▁on ▁a ▁number ▁of ▁occasions ▁in ▁ 1 9 7 4 ▁in ▁the ▁Republic ▁of ▁Ireland . ▁In ▁July , ▁an ▁armed ▁group ▁kid n apped ▁an ▁off - d ut y ▁Gard a ▁and ▁forced ▁him ▁to ▁drive ▁a ▁car ▁bomb ▁to ▁the ▁village ▁of ▁Mag her ave ely , ▁on ▁the ▁border ▁between ▁County ▁Cav an ▁and ▁F erman agh . ▁The ▁proxy - b om bers ▁target ▁was ▁a ▁Catholic - owned ▁pub . ▁The ▁Gard a ▁managed ▁to ▁abandon ▁the ▁vehicle ▁on ▁an ▁open ▁field . ▁In ▁another ▁incident , ▁a ▁man ▁was ▁forced ▁to ▁drive ▁a ▁car ▁bomb ▁which ▁eventually ▁failed ▁to ▁expl ode ▁into ▁Cl ones , ▁County ▁Mon ag han . ▁The ▁I RA ▁claimed ▁that ▁they ▁def used ▁the ▁device . ▁On ▁ 1 1 ▁September ▁ 1 9 7 4 , ▁mask