started slowly in Peoria including carriage factories, pottery makers, wholesale warehousing, casting foundries, glucose factories, ice harvesting, and furniture makers. Peoria became the first world leader for distilleries thanks to Andrew Eitle (1837) and Almiron S. Cole (1844). In 1889, Keystone Steel & Wire developed the first wire fence and has since been the nation's leading manufacturer. At this time, agricultural implement production declined, which led the earth moving and tractor equipment companies to skyrocket and make Peoria in this field the world leader. In 1925, Caterpillar Tractor Co. was formed from California-based companies, Benjamin Holt Co. and the C.L. Best Tractor Co. Robert G. LeTourneau's earth moving company began its production of new scrapers and dozers in 1935 which evolved into Komatsu-Dresser, Haulpak Division. The world headquarters for Caterpillar Inc. was based in Peoria for over 110 years until announcing their move to Deerfield, Illinois in late-2017. Medicine has become a major part of Peoria's economy. In addition to three major hospitals, the USDA's National Center for Agricultural Utilization Research, formerly called the USDA Northern Regional Research Lab, is located in Peoria. This is one of the labs where mass production of penicillin was developed. More recently Peoria has become a regional medical hub for central Illinois with recent hospital expansions. Retail The city's largest mall is Northwoods Mall. Other retail centers include The Shoppes at Grand Prairie, Sheridan Village, Metro Centre, Willow Knolls Court, and Westlake Shopping Center. Businesses BioUrja Renewables: Corn processing plant and specialty ethanol producer Bergner's (until August 2018 when it went bankrupt and closed nationwide): Department store; started in 1889 in downtown Peoria and eventually bought out Carson Pirie Scott & Co. (now part of Bon-Ton) Caterpillar (until 2017 when its headquarters (approximately 300 positions) moved to Deerfield, Illinois): Heavy equipment and engine manufacturer. Caterpillar still maintains a large working force in the area in management, marketing, IT, engineering and labor union manufacturing, as well as other positions. CEFCU: Credit union; started by Caterpillar employees; now serves residents of 14 counties in Central Illinois and 3 in California Komatsu America Corporation: World's second-largest mining equipment manufacturer has a large manufacturing facility in Peoria Maui Jim (World Headquarters): Sunglasses manufacturer National Center for Agricultural Utilization Research: Largest USDA research facility; one of the facilities where mass production of penicillin was improved OSF Healthcare, which operates OSF Saint Francis Medical Center RLI Corp. (World Headquarters): Specialty