Chlorofluorocarbons or CFCs are a chemical compound containing carbon, chlorine, and fluorine. Throughout the 20th century, CFCs were mass produced for their popularity in refrigeration and spray cans. In the 1970s, evidence began to show the harmful effects of CFCs on Earth.
Originally created as Great Sand Dunes National Monument on March 17, 1932, Great Sand Dunes National Park and Preserve was established by an act of the United States Congress on September 13, 2004.
White Sands became a national monument on 18 Jan 1933 by order of President Herbert Hoover. Efforts to preserve the area's brilliant gypsum dunes had begun in the late 1800's, but it was the enthusiasm of local booster Tom Charles that finally led to the park's creation.hite Sands became a national monument on 18 Jan 1933 by order of President Herbert Hoover. Efforts to preserve the area's brilliant gypsum dunes had begun in the late 1800's, but it was the enthusiasm of local booster Tom Charles that finally led to the park's creation.