▁Mar qu ina , ▁along ▁with ▁others , ▁threw ▁Mol ot ov ▁co ck t ails ▁at ▁the ▁bal con y ▁of ▁the ▁President ial ▁Palace , ▁where ▁De ▁la ▁Madrid ▁was ▁review ing ▁the ▁May ▁Day ▁para de . ▁Although ▁the ▁President ▁was ▁un har med , ▁the ▁incident ▁left ▁many ▁officials ▁and ▁guests ▁injured , ▁including ▁the ▁then - direct or ▁of ▁the ▁IS ST E , ▁Ale j andro ▁Car ril lo . ▁ ▁San ▁Juan ico ▁explos ions ▁ ▁On ▁ 1 9 ▁November ▁ 1 9 8 4 , ▁a ▁massive ▁series ▁of ▁explos ions ▁occurred ▁at ▁a ▁liquid ▁pet role um ▁gas ▁( LP G ) ▁tank ▁farm ▁in ▁the ▁town ▁of ▁San ▁Juan ▁I x hu ate pec ▁( out side ▁of ▁Mexico ▁City , ▁Mexico ). ▁The ▁dis aster ▁was ▁initi ated ▁by ▁a ▁gas ▁leak ▁on ▁the ▁site , ▁likely ▁caused ▁by ▁a ▁pipe ▁ru pt ure ▁during ▁transfer ▁operations , ▁which ▁caused ▁a ▁pl ume ▁of ▁L PG ▁to ▁concent rate ▁at ▁ground ▁level ▁for ▁ 1 0 ▁minutes . ▁The ▁pl ume ▁eventually ▁grew ▁large ▁enough ▁to ▁dr ift ▁on ▁the ▁wind ▁towards ▁the ▁west ▁end ▁of ▁the ▁site , ▁where ▁the ▁facility ' s ▁waste - gas ▁f lare ▁pit ▁was ▁located . ▁The ▁explos ions ▁dev ast ated ▁the ▁town ▁of ▁San ▁Juan ▁I x hu ate pec , ▁and ▁resulted ▁in ▁ 5 0 0 - 6 0 0 ▁death s ▁and ▁ 7 , 0 0 0 ▁people