in ctions ▁since ▁ 1 5 0 0 ▁Category : B ird s ▁described ▁in ▁ 1 8 9 2 ▁Category : T ax onomy ▁articles ▁created ▁by ▁Pol bot <0x0A> </s> ▁The ▁At omic ▁Bomb ▁Cas ual ty ▁Commission ▁( AB CC ) ▁was ▁a ▁commission ▁established ▁in ▁ 1 9 4 6 ▁in ▁accord ance ▁with ▁a ▁president ial ▁directive ▁from ▁Harry ▁S . ▁Tr uman ▁to ▁the ▁National ▁Academy ▁of ▁Sciences - National ▁Research ▁Council ▁to ▁conduct ▁investig ations ▁of ▁the ▁late ▁effects ▁of ▁radiation ▁among ▁the ▁atomic - b omb ▁surv iv ors ▁in ▁H iro sh ima ▁and ▁Nag as aki . ▁As ▁it ▁was ▁ere cted ▁purely ▁for ▁scientific ▁research ▁and ▁study , ▁not ▁as ▁a ▁provider ▁of ▁medical ▁care ▁and ▁also ▁because ▁it ▁was ▁heavily ▁supported ▁by ▁the ▁United ▁States , ▁the ▁AB CC ▁was ▁generally ▁m istr usted ▁by ▁most ▁surv iv ors ▁and ▁Japanese ▁al ike . ▁It ▁operated ▁for ▁nearly ▁thirty ▁years ▁before ▁its ▁dissol ution ▁in ▁ 1 9 7 5 . ▁ ▁History ▁The ▁At omic ▁Bomb ▁Cas ual ty ▁Commission ▁( AB CC ) ▁was ▁formed ▁after ▁the ▁United ▁States ▁attack ▁on ▁H iro sh ima ▁and ▁Nag as aki ▁on ▁August ▁ 6 ▁and ▁August ▁ 9 , ▁ 1 9 4 5 . ▁The ▁AB CC ▁originally ▁began ▁as ▁the ▁J oint ▁Commission ▁ ▁The ▁AB CC ▁set ▁out ▁to ▁obtain ▁first - hand ▁technical ▁information ▁and ▁make ▁a ▁report ▁to ▁let ▁people ▁know ▁the ▁opportun ities ▁for