Antitrust and Trade Regulation laws aim to promote free competition in the marketplace. Agreements or cooperative efforts by two or more entities that affects or restrains competitors is illegal under these laws. The Sherman Act makes illegal any contract, combination, or conspiracy in restraint of trade or commerce and makes monopolies and attempts, combinations, or conspiracies to monopolize illegal. The Clayton Act regulate price discrimination, tying and exclusive dealing contracts, stock acquisition and interlocking directorates.
Piedra (formerly, Del Piedra and Delpiedra) is an unincorporated community in Fresno County, California. It is located on the south bank of the Kings River 23 miles (37 km) east of Fresno, at an elevation of 538 feet (164 m). In 1911, the Atchison, Topeka and Santa Fe Railroad built a branch line to a nearby quarry and bestowed the name ("Piedra" is Spanish for "rock" or "stone"). The Delpiedra post office operated from 1920 to 1943. The Piedra post office was established in 1949.