The world’s largest aluminum company, Rusal, may shut down its unprofitable aluminum smelter, putting 7,560 workers out of a job. It will completely change the landscape of the small towns where the industry provides a lifeline. Russian tycoon and Rusal’s head Oleg Deripaska said he might temporarily stop production at five of his aluminum plants in Russia by the year end. Rusal employs about 72,000 workers…