High-grade fire clays can withstand temperatures of 1775 Â°C (3227 Â°F), but to be referred to as a fire clay the material must withstand a minimum temperature of 1,515 Â°C (2,759 Â°F). Fire clays range from flint clays to plastic fire clays, but there are semi-flint and semi-plastic fire clays as well.
La Mesa, California. La Mesa, California. La Mesa is a city in Southern California, located 9 miles (14 km) east of Downtown San Diego in San Diego County. The population was 57,065 at the 2010 census, up from 54,749 at the 2000 census. Its civic motto is the Jewel of the Hills..
La Mesa is a general law city which uses a council-manager system of government with a directly-elected mayor. The city council consists of a mayor and four councilmembers, all of whom are elected from the city at large and serve four-year terms.