It was discovered in 1995 that. during the spring time. unexpectedly low concentrations of gaseous elemental mercury (GEM) occurred in the Arctic air. This was surprising for a pollutant known to have a long residence time in the atmosphere; however conditions appeared to exist in the Arctic that promoted this depletion of mercury (Hg). https://cuttingedgecutleryco.shop/product-category/buffing-compund/