The days of one of the few factories in Winston-Salem, North Carolina that doesn’t make cigarettes are numbered: AT&T Co says that it will close its lightwave trans-mission equipment plant there and transfer the work to plants in Oklahoma and Massachusetts as part of the restructuring against which it took a $1,030m restructuring charge a year ago; 3,300 employees will be affected, 1,000 of them are qualified for their pension and AT&T will try to relocate many of the others; it has also closed five clean rooms over the past year as part of the effort to reduce excess capacity.