LAURIE D. GRAHAM The Window Blind Factory Hardshipis the endurance of atrophy. On break outside Derwent High School,now a blind factory cultivating jobs, in the bookless classrooms of industry,gymnasium lifebreath enterprise, entrepreneurial smoke-breaks or not — the women in front of the school have the same devout braids,the same homemade blouses under company windbreakers, the same empty hands. Maybe they’re made to wear uniforms. Blind into blind-slot, factory vinyl,promise of supper and a walk to