(ROUGH CUT ONLY - NO REPORTER NARRATION)<br/> <br />An explosion at an industrial plant in Sherbrooke, Quebec injured 17 people on Thursday (November 8) - five with serious burns. One person was airlifted to Montreal for treatment, according to a spokesperson with the Sherbrooke University Hospital Centre.<br/> <br />All 65 employees had been accounted for, a fire department spokesperson said.<br/> <br />The explosion occurred at 1830GMT (1330EST) at Neptune Technologies. The blast sparked a fire at the site and thick black smoke filled the air.<br/> <br />The facility kept 15,000 litres of acetone in reserve.<br/> <br />Firefighters are investigating the cause of the blast.