Keith D. Bronstein

US Ecology Holdings, Inc. engages in the provision of industrial waste management and recycling services to commercial and government entities, including refineries and chemical production facilities, manufacturers, electric utilities, steel mills, medical and academic institutions, and waste brokers. It operates through the Environmental Services, and Field and Industrial Services segments. The Environmental Service segment provides a range of hazardous material management services including the transportation, recycling, treatment, and disposal of hazardous and non-hazardous waste at company-owned landfills, wastewater, and other treatment facilities. The Field and Industrial Services segment offers packaging and collection of hazardous waste and total waste management solutions at customer sites and through its 10-day storage facilities. The company was founded in 1952 and is headquartered in Boise, ID.

Chicago Mercantile Exchange Inc. operated a stock exchange. The company was founded on November 13, 2000 and was headquartered in Chicago, IL.

Part of TradeLink Holdings LLC, Tradelink LLC is an investment and proprietary trading firm. The company is based in Chicago, IL.

Electronic Recyclers International, Inc. recycles e-waste and other products, including computers, televisions, cell phones, office machines, batteries, light bulbs, keyboards, and telecom equipment. The company was founded in 2005 and is headquartered in Fresno, CA.

The New York Mercantile Exchange, Inc. provides markets for the trading and clearing of crude and heating oil, gasoline, natural gas, and electricity. The company is headquartered in New York, NY.

SLIL Biomedical Corp is an American company that researches, discovers, and develops drugs to treat cancer and other diseases. The company was founded by Laurence J. Marton.

Chicago Board of Trade provides trade derivative facilities. It allows speculators throughout the world to interpret economic data, news, and other information. The company was founded on April 3, 1848 and is headquartered in Chicago, IL.

Chicago Climate Exchange, Inc. operates as a greenhouse gas reduction and trading platform. It represents all sectors of the global economy and public sector innovators located throughout the United States. The company was founded in 2003 by Richard Sandor and is headquartered in Chicago, IL

American EPAY, Inc. provides web based payroll services. Its services include wireless time and attendance devices, toll free time keeping solutions with text to speech, and voice matching technologies. The firm also provides web based solutions such as web timesheets, scheduling, job costing and budgeting for labor tracking and management. American EPAY was founded by Ben Aissa in 2002 and is headquartered in Chicago, IL.