n , ▁Gaz ▁Gaz ā r - e ▁P ā ’ ī n , ▁Gaz ▁Ge z are h ▁P ā ’ ī n , ▁and ▁Gaz ▁Ge z ā reh - ye ▁P ā ’ ī n ) ▁is ▁a ▁village ▁in ▁S is ▁R ural ▁District , ▁Bol ban abad ▁District , ▁De h g olan ▁County , ▁Kur dist an ▁Province , ▁Iran . ▁At ▁the ▁ 2 0 0 6 ▁census , ▁its ▁population ▁was ▁ 2 4 3 , ▁in ▁ 6 3 ▁families . ▁ ▁References ▁▁ ▁Category : T own s ▁and ▁villages ▁in ▁De h g olan ▁County <0x0A> </s> ▁Henri ▁P é zer at ▁( A pril ▁ 1 2 , ▁ 1 9 2 8 ▁- ▁February ▁ 1 6 , ▁ 2 0 0 9 ) ▁was ▁a ▁French ▁research ▁director , ▁to xic ologist ▁and ▁wh ist leb lower . ▁ ▁Early ▁life ▁Henri ▁was ▁a ▁gradu ate ▁of ▁the ▁School ▁of ▁Chem istry ▁of ▁Lyon . ▁While ▁working ▁in ▁his ▁J uss ieu ▁chem istry ▁labor atory , ▁in ▁ 1 9 7 3 ▁Henri ▁identified ▁as best os ▁in ▁the ▁white ▁dust ▁falling ▁from ▁the ▁ce iling . ▁After ▁exam ining ▁the ▁literature ▁on ▁this ▁sil icate ▁and ▁discover ing ▁its ▁car cin ogen ic ▁character , ▁he ▁reported ▁this ▁to ▁an ▁inter - union ▁collect ive ▁on ▁safety . ▁ ▁Career ▁ ▁In ▁ 1 9 7 8 , ▁he ▁supported ▁the ▁workers ▁at ▁the ▁Am is ol