(CP)  A Nova Scotia fish farmer  has entered a not guilty plea to charges
stemming from a fatal diving accident  over the summer.  
A lawyer for 27-year-old  Ausman William Murphy of Blandford entered the plea Thursday in Bridgewater  provincial court.  Murphy has been charged  under the Occupational Health and Safety Act.  
The Crown alleges he  allowed an untrained employee to dive in a hazardous environment.  
Police say Chadwick James Zinck was diving to check a tuna holding pound on August 19th. Zinck found himself in  distress, and three people onboard the boat he was diving from were unable to  save him.  

Murphy's trial is  scheduled to begin March 29th.