▁when ▁the ▁fire ▁ra ged ▁out ▁of ▁control . ▁The ▁tunnel ▁was ▁renov ated ▁in ▁the ▁after math ▁to ▁increase ▁driver ▁safety , ▁re open ing ▁after ▁three ▁years . ▁ ▁Inc idents ▁involving ▁children ▁ ▁The ▁record ▁for ▁the ▁young est ▁person ▁to ▁clim b ▁Mont ▁Bl anc ▁was ▁set ▁in ▁ 2 0 0 9 ▁by ▁ 1 0 - year - old ▁Ash er ▁Silver ▁( UK ). ▁ ▁In ▁July ▁ 2 0 1 4 , ▁an ▁American ▁entrepr ene ur ▁and ▁travel er ▁Patrick ▁S ween ey ▁attempted ▁to ▁break ▁the ▁record ▁with ▁his ▁nine - year - old ▁son ▁P . J . ▁and ▁ 1 1 - year - old ▁daughter ▁Sh annon . ▁They ▁were ▁caught ▁in ▁a val anche , ▁luck ily ▁escaped ▁death ▁and ▁decided ▁not ▁to ▁purs ue ▁their ▁attempt . ▁ ▁In ▁August ▁ 2 0 1 4 , ▁an ▁unknown ▁Aust rian ▁clim ber ▁with ▁his ▁ 5 - year - old ▁son ▁were ▁intercept ed ▁by ▁mountain ▁g end arm es ▁at ▁ 3 , 2 0 0 ▁metres ▁and ▁forced ▁to ▁turn ▁around . ▁ ▁On ▁ 5 ▁August ▁ 2 0 1 7 , ▁ 9 - year - old ▁Hung arian ▁tw ins ▁and ▁their ▁mother ▁were ▁res cu ed ▁from ▁ 3 , 8 0 0 ▁metres ▁by ▁hel ic opter ▁while ▁their ▁father ▁and ▁family ▁friend ▁continued ▁their ▁sum mit ▁attempt . ▁ ▁E lev ation ▁▁ ▁The ▁sum mit ▁of ▁Mont ▁Bl anc