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..
Mesa County, Colorado. Mesa County is one of the 64 counties of the U.S. state of Colorado. As of the 2010 census, the population was 146,723. The county seat is Grand Junction. The county was named for the many large mesas in the area, including Grand Mesa. Mesa County comprises the Grand Junction, CO Metropolitan Statistical Area.