Intel's factories in Hillsboro are the heart of its manufacturing operation.Intel Corp.By Mike Rogoway | The Oregonian/OregonLiveIntel plans to lay off up to a fifth of its factory workers, an enormous cutback that will have a profound effect on one of the chipmaker’s core businesses.“These are difficult actions but essential to meet our affordability challenges and current financial position of the company. It drives pain to every individual,” Intel manufacturing Vice President Naga Chandraseka...