Differentiate fixed costs and variable costs. 1  Total cost is the sum of fixed and variable costs.  Variable costs change according to the quantity of a good or service being produced. The amount of materials and labor that is needed for to make a good increases in direct proportion to the number of goods produced.
Southern Copper Corporation is an American-based copper producer with major operations in Mexico and Peru. Grupo Mexico currently owns 75.1% of the company, which produced 487 thousand metric tons of copper in 2010. Major assets include the Cuajone and Toquepala mines in Peru and the Cananea mine in Mexico.
CopperweldÂ® is the worldâs most famous brand of Copper-Clad Steel (CCS) wire, and although many competitors may compare themselves to CopperweldÂ®, only genuine CopperweldÂ® wire has gone through the rigorous testing and quality checks that ours has.