Para. 1 - The Relationship Between Special and Regular School Programs. Special education is an integral part of the total educational enterprise, not a separate order. In any school system, special education is a means of enlarging the capacity of the system to serve the educational needs of all children.
The purity of dental gold is usually 16 karat, but it is slightly more complicated to recycle than jewelry because it may include nonmetal content like tooth enamel or porcelain. The recycler will use a process like acid reduction or reverse electroplating to extract the gold from the nonmetal elements.
The Alchemists of Alexandria developed an elixir made of liquid gold. They believed that gold was a mystical metal that represented the perfection of matter, and that its presence in the body would enliven, rejuvenate, and cure a multitude of diseases as well as restore youth and perfect health. As many as 4,500 years ago, the Egyptians used gold in dentistry. Remarkable examples of its early use have been found by modern archaeologists. Still in favor today as an ideal material for dental work, approximately 13 tons of gold are used each year for crowns, bridges, inlays and dentures.