What was built in the former location of a snack company that now resides in East Hanover, New Jersey?
Chelsea Market:  It was built in the former National Biscuit Company (Nabisco) factory complex where the Oreo cookie was invented and produced. Nabisco: Nabisco (from the National Biscuit Company) is an American manufacturer of cookies and snacks headquartered in East Hanover, New Jersey.
i don't know