BALTIMORE (AP) — Engineers in Maryland are working on the daunting task of removing the remains of the collapsed Francis Scott Key Bridge from the Patapsco River. Crews on Saturday started to cut the first section of twisted steel so it can be loaded onto a barge. Seven floating cranes, 10 tugboats and nine barges have been tapped to help. Clearing the river will allow officials to reopen the economically vital Port of Baltimore. A massive cargo ship felled the span Tuesday after smashing into a pillar. The bodies of two of six workers missing after the collapse were recovered earlier this week. But four more have yet to be located and are presumed dead.