The HAZWOPER refresher is a safety training course, which is designed for the general site workers who are directly exposed to the hazardous materials in the industrial environments. The training is very necessary because the substances are comprised of various harmful chemicals and have various adverse health effects on the human beings. The particular course teaches the sire workers as how to protect themselves from the harmful emissions. The course teaches the workers about the proper usage of the safety equipments so that workers can prevent themselves from the negative health effects.