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.
The area is in the mountain-ringed Tularosa Basin and comprises the southern part of a 275 square miles (710 km 2) field of white sand dunes composed of gypsum crystals.It is the largest gypsum dune field in the world.y emphasizing the economic benefits, Charles was able to mobilize enough support to have the park created. On January 18, 1933, President Herbert Hoover created the White Sands National Monument, acting under the authority of the Antiquities Act of 1906.