Dan Kenary and Rich Doyle founded Harpoon Brewery in 1986, and 155 employees work for the company in Boston. In addition to a Seaport plant, Harpoon has a brewery in Windsor, Vt. Here is a look inside the plant and their beer-making process. Pictured: A giant bottlecap marks the entrance of Harpoon Brewery in Boston's Seaport District.