Many union members were among the supporters wearing green "Let's get to work" shirts.
The Bellingham Herald reported that opponents wore red "Power past coal" shirts.
Supporters say the $600 million project proposed by SSA Marine of Seattle would boost the local economy. Opponents worry about train traffic, coal dust and the environmental risk.
The Gateway Pacific Project is the biggest of a half-dozen proposed terminals in the Northwest to ship coal from Montana and Wyoming to Asia.
Other public comment meetings on the Cherry Point project are Tuesday in Spokane, Dec. 12 in Vancouver and Dec. 13 in Seattle.
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