GREEN BAY, Wis. (AP) – The frigid start to December is causing concerns for the shipping industry at the Port of Green Bay. The cold temperatures means ships entering the Fox River have to plow through thick ice. And that could mean an early end to the shipping season.        Port director Dean Haen says they need some help from ice breakers to get the last remaining vessels of the year into port. Haen tells WBAY-TV (http://bit.ly/1c9cVrK ) that shipping companies are hiring private companies to break the ice. If they can’t do it, the U.S. Coast Guard steps in. And Haen says that cost is on the taxpayer. He says ship captains determine when the season closes, which could be any day now.

—  Information from: WBAY-TV, http://www.wbay.com