STRAITS OF MACKINAC - Crewmembers aboard the Coast Guard Cutter Hollyhock, homeported in Port Huron, Mich., use an oil-skimming device to recover peat moss, acting as a substitute for spilled oil, near Mackinac Island, Jan. 24, 2012. The crew of the Hollyhock is participating in a project led by the Coast Guard's Research and Development Center, showcasing techniques for removing spilled oil from a frozen environment. U.S. Coast Guard video by Petty Officer 1st Class Matthew Schofield
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