Gainesville-based company Nemo Plastics Inc. may have to pay up to $133,443 in proposed penalties for violations including exposing workers to explosion, fire and amputation hazards. The plastic recycling plant at 1425 Candler Road is charged with 24 violations following an inspection in July from the Occupational Safety and Health Administration, according to a news release from the U.S. Department of Labor. The investigation was prompted by a complaint from an employee, and a letter listing the citations was sent to the company in December.