1 9 8 2 , ▁Our ▁Ch alet ▁replaced ▁the ▁stone ▁roof ▁with ▁a ▁new ▁ins ulated ▁one ▁to ▁cut ▁down ▁how ▁much ▁heat ▁escaped ▁and ▁prevent ▁huge ▁ic icles ▁from ▁forming . ▁In ▁August ▁ 1 9 8 3 , ▁five ▁of ▁the ▁six teen ▁girls ▁from ▁the ▁ 1 9 3 3 ▁Jul iet te ▁Low ▁Memorial ▁Fund ▁group ▁returned ▁for ▁their ▁ 5 0 th ▁anni versary ▁and ▁placed ▁a ▁pla que ▁on ▁the ▁tree ▁they ▁had ▁plant ed ▁outside ▁the ▁library ▁window . ▁New port ▁left ▁early ▁in ▁ 1 9 8 7 ▁and ▁G wen ▁Smith ▁of ▁the ▁United ▁Kingdom ▁filled ▁in ▁until ▁December ▁ 1 9 8 7 , ▁when ▁Mah a ▁Sal h ani ▁of ▁Leb anon ▁took ▁over . ▁ ▁In ▁the ▁late ▁ 1 9 8 0 s , ▁many ▁of ▁the ▁walking ▁sessions ▁had ▁to ▁be ▁cancel led ▁due ▁to ▁lack ▁of ▁interest . ▁The ▁staff ▁noticed ▁that ▁whereas ▁in ▁earlier ▁years ▁lug g age ▁was ▁ha u led ▁by ▁hand - cart , ▁tax is ▁were ▁all ▁that ▁were ▁used ▁by ▁this ▁time . ▁In ▁the ▁summer ▁of ▁ 1 9 8 6 , ▁Swiss ▁law ▁changed ▁and ▁b anned ▁under ground ▁oil ▁t anks , ▁which ▁Our ▁Ch alet ▁had . ▁In ▁ 1 9 8 8 ▁Our ▁Ch alet ▁had ▁saved ▁the ▁funds ▁to ▁move ▁the ▁t anks ▁to ▁a ▁new ▁cell ar ▁under ▁the ▁kitchen ▁por ch . ▁ ▁In ▁ 1 9 9 0 , ▁the ▁World ▁Conference