Farmers, environmentalists and members of the Army Corps of Engineers crammed into the conference room of a giant barge this morning in Wabasha to talk about the future of navigation on the Mississippi River. Today's annual meeting of the Army Corps' Mississippi River Commission marked one of the first public gatherings since a high ranking official accused the agency of "cooking the books" in a bid to expand the lock and dam system. Minnesota Public Radio's Erin Galbally has this report. {Early this morning, in the shadow of the 241-foot, cream and red Army Corps vessel, a handful of environmental groups held a press conference to call attention to the plight of the Mississippi River. Representatives from the Sierra Club, the Audobon Society, and others spoke in favor of conservation and against the expansion of the lock and dam system. The Sierra Club's Dean Rebuffoni says expansion would help big business and hurt the river. In fact he says big business is lying to help its cause.