Dec 18, 2007. /Lesprom Network/. Georgia-Pacific is closing its tissue mill in Bellingham this week after 80 years of manufacturing pulp, paper and lumber on the site. GP sold the property to the port and city of Bellingham in 2005 for a redevelopment project, but the company leased the space until deciding this year to close the mill. The port says the company will demolish the mill by the end of 2008.