Copper Mining. (2011, March 21). Retrieved May 10, 2025, from http://www.essayworld.com/essays/Copper-Mining/96490
"Copper Mining." Essayworld.com. Essayworld.com, 21 Mar. 2011. Web. 10 May. 2025. <http://www.essayworld.com/essays/Copper-Mining/96490>
"Copper Mining." Essayworld.com. March 21, 2011. Accessed May 10, 2025. http://www.essayworld.com/essays/Copper-Mining/96490.
"Copper Mining." Essayworld.com. March 21, 2011. Accessed May 10, 2025. http://www.essayworld.com/essays/Copper-Mining/96490.