2 9 . ▁ 1 9 3 8 ▁Al - R ash id ▁Mos que ▁completed . ▁Clar ke ▁Stadium ▁completed . ▁ 1 9 4 7 ▁– ▁The ▁first ▁major ▁oil ▁discovery ▁in ▁Al berta ▁was ▁made ▁near ▁the ▁town ▁of ▁Led uc , ▁south ▁of ▁Ed mont on . ▁ 1 9 4 0 s ▁and ▁ 1 9 5 0 s ▁– ▁The ▁subsequent ▁oil ▁bo om ▁gave ▁Ed mont on ▁new ▁status ▁as ▁the ▁" O il ▁Capital ▁of ▁Canada ", ▁and ▁during ▁the ▁ 1 9 5 0 s , ▁the ▁city ▁increased ▁in ▁population ▁from ▁ 1 4 9 , 0 0 0 ▁to ▁ 2 6 9 , 0 0 0 . ▁After ▁a ▁relatively ▁calm ▁but ▁still ▁prosper ous ▁period ▁in ▁the ▁ 1 9 6 0 s , ▁the ▁city ' s ▁growth ▁took ▁on ▁renew ed ▁vig our ▁con com it ant ▁with ▁high ▁world ▁oil ▁prices , ▁triggered ▁by ▁the ▁ 1 9 7 3 ▁oil ▁crisis ▁and ▁the ▁ 1 9 7 9 ▁Iran ian ▁Revolution . ▁The ▁oil ▁bo om ▁of ▁the ▁ 1 9 7 0 s ▁and ▁ 1 9 8 0 s ▁ended ▁ab rupt ly ▁with ▁the ▁sharp ▁decl ine ▁in ▁oil ▁prices ▁on ▁the ▁international ▁market ▁and ▁the ▁introduction ▁of ▁the ▁National ▁Energy ▁Program ▁in ▁ 1 9 8 1 ; ▁that ▁same ▁year , ▁the ▁population ▁had ▁reached ▁ 5 2 1 , 0 0 0 . ▁ 1 9 4 2 ▁– ▁A