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.
Producer Manufacturing Â» Metal Fabrication. Harsco Corp. engages in the provision of industrial services and engineered products. It operates through the following segments: Harsco Metals and Materials, Harsco Industrial, and Harsco Rail. The Harsco Metals and Minerals segment provides on-site services of materials logistics, product quality improvement, and resource recovery for iron, steel, and metals manufacturing.