1 3 , ▁the ▁G AW ▁model ▁was ▁adopted ▁and ▁expanded ▁by ▁the ▁United ▁Ste el ▁Work ers ▁who ▁negoti ated ▁a ▁contract ▁providing ▁a ▁full ▁year ▁of ▁supp lement ary ▁un emp loyment ▁benefits ▁for ▁ 2 0 , 0 0 0 ▁steel work ers ▁employed ▁by ▁American ▁Can ▁Co . ▁and ▁ 1 5 , 0 0 0 ▁more ▁employed ▁by ▁Cont inental ▁Can ▁Co . ▁ ▁July ▁▁ ▁July – Se ptember ▁- ▁A ▁major ▁heat ▁wave ▁struck ▁Michigan ▁during ▁the ▁summer ▁months , ▁and ▁by ▁September ▁ 2 0 , ▁Detroit ▁had ▁recorded ▁a ▁record ▁ 3 2 ▁days ▁temper atures ▁exceed ing ▁ 9 0 ▁degrees . ▁ ▁In ▁early ▁July , ▁the ▁heat ▁shut ▁down ▁Ch rys ler ' s ▁autom obile ▁production . ▁Also ▁in ▁July , ▁a ▁water ▁short age ▁developed ▁in ▁metropol itan ▁Detroit , ▁and ▁Mayor ▁Cob o ▁ur ged ▁residents ▁to ▁limit ▁water ▁usage ▁to ▁that ▁which ▁was ▁essential . ▁A ▁ban ▁on ▁la wn ▁spr ink ling ▁remained ▁in ▁effect ▁for ▁most ▁of ▁the ▁summer ▁in ▁Detroit ▁and ▁ 4 0 ▁sub urban ▁communities . ▁The ▁heat ▁wave ▁led ▁to ▁record ▁water ▁usage ▁of ▁in ▁Detroit ▁of ▁ 6 9 5 ▁million ▁gall ons ▁on ▁July ▁ 6 , ▁and ▁that ▁record ▁was ▁broken ▁two ▁weeks ▁later ▁with ▁ 7 2 5 ▁million ▁gall ons ▁consum ed ▁on ▁July ▁ 2 1 . ▁Laur ence ▁Len hardt , ▁general ▁manager ▁of ▁the ▁Detroit ▁Water ▁Department , ▁noted ▁that ▁the ▁water ▁short