We transform people�s lives by energizing and connecting our world through silicon technology. As the largest producer of high-purity polysilicon in the United States, Hemlock Semiconductor Operations (HSC) draws on the talents of more than 650 employees to provide the material critical to two high-tech, high-growth industries: electronics and solar energy. HSC is a joint venture between DuPont, Corning Inc. and Shin-Etsu Handotai.