Worland Volunteer Fire Department -07/07/2017 WFD was called to Smet Recycling on HWY 20 North for a report of an unknown type of fire. Upon arrival we found that the fire was a sulfur mound that had been ignited. Despite the beautiful flames, burning sulfur creates a hazardous gas called sulfur dioxide. WFD was able to position apparatus in a safe location and lay in a line to extinguish the fire. We captured the video, while in full PPE and wearing SCBA’s during a size up of the situation, as crews were setting up for suppression.