'Now considered an environmental hazard, this refrigerant gas was discovered in the 1930s by Dr. Thomas Midgley'
freon
HAZARDS: Now considered an environmental hazard, this refrigerant gas was discovered in the 1930s by Dr. Thomas Midgley
Now considered an environmental hazard, this refrigerant gas was discovered in the 1930s by Dr. Thomas Midgley
Now considered an environmental hazard, this refrigerant gas was discovered in the 1930s by Dr. Thomas Midgley
HAZARDS
freon
HAZARDS