Maine’s lumber industry has survived the ups and downs of markets for over a century. Maine’s lumber industry has been part of a complex relationship with Canada. Quebec and New Brunswick wrap around northern Maine, and in some cases, the border between countries has been largely irrelevant. That relationship is evident in Madawaska, where Twin Rivers operates a paper mill paired with a pulp mill across the St. John River in Edmundston, New Brunswick. The two mills are connected by a pipeline that carries wood pulp from one country to another to be made into paper. The Maine / Canada connection is also visible in other ways. Irving owns large tracts of forest land in Maine and has three sawmills in the state. Logs from the Maine woods are hauled across the border to be sawed into lumber, some of which is then sold back into the US.