Federal safety officials are proposing $164,000 in fines for Vestas Towers America Inc. after a Pueblo worker suffered a broken wrist and partial amputation of two fingers.Vestas says it has enhanced safety measures since a wind turbine manufacturing plant employee was injured Nov. 19 accident when sections of wind towers being welded together slid.The Occupational Safety and Health Administration cited Vestas for a "willful" violation and alleged that support equipment to prevent the slide had been removed. OSHA also alleged 23 serious violations, including improper use of ladders. Vestas said Wednesday it has addressed many of OSHA's concerns. The accident happened a month after a deadly accident at the same plant. John Keel, 21, an employee for Vestas' contractor Transportation Technology Services, was crushed to death between a huge forklift and a rail car while loading parts of wind towers for shipment.