OUR STORY Mississippi Silicon LLC is a partnership between Rima Holding USA, Inc. and Clean Tech I LLC. Rima Holding USA Inc. is the majority owner of Mississippi Silicon and also associated with Rima Industrial S/A, a leading ferroalloy and non-ferrous metals producer in Brazil. Clean Tech I LLC is a partnership composed of strategic investors and financial advisers. In addition to the equity investors, Mississippi Silicon is supported by partners in critical areas that are experienced and globally recognized in their various disciplines. Our commercial partner and the exclusive silicon sales representative for Mississippi Silicon is Polymet Alloys, Inc., who has more than thirty years of experience in silicon metal sales in the United States. Our silica fume is marketed exclusively by RED Industrial Products. Tennessee Valley Authority (TVA), a United States government-owned and self-financed public power company, and one of the largest and most diversified power suppliers in the US, is our electricity partner. Mississippi Silicon’s technology partner is Rima Industrial S/A, the fourth largest silicon metal producer in the world. Financing for the project is being provided by KFW Bankengruppe of Germany, augmented by a variety of federal, state, and local grants and loans. Mississippi Silicon is led by a group of industry veterans with extensive experience operating and managing silicon metal facilities. Eddie Boardwine is the Chief Operating Officer with the board of directors composed of Ricardo Vicintin, Rima Industrial CEO and President; Braulio Lage, Polymet Alloys President, and John Lalley, the designee of Clean Tech, who have more than 100 years of combined experience in the Silicon Metal business. The silicon metal produced at the new facility is sold throughout the United States and used in a broad range of industries including aluminum, automotive, and chemical industries, solar cells, and semiconductors. Silicon metal is used in thousands of applications and its consumption in the United States and worldwide continues to increase. OUR PARTNERS MISSISSIPPI SILICON 662.696.2600 80 Co Rd 210, Burnsville, MS 38833 SALES INQUIRIES: Polymet Alloys, Inc. 205.981.2200 205.981.1583 1701 Providence Park, Suite 100, Birmingham, AL 35242 HOMEFAQCAREERS © 2019 Mississippi Silicon. All Rights Reserved.

CONTACT US MISSISSIPPI SILICON 80 Co Rd 210 Burnsville, MS 38833 662.696.2600 Name * First Name Last Name Email Address * Subject * Message * MISSISSIPPI SILICON 662.696.2600 80 Co Rd 210, Burnsville, MS 38833 SALES INQUIRIES: Polymet Alloys, Inc. 205.981.2200 205.981.1583 1701 Providence Park, Suite 100, Birmingham, AL 35242 HOMEFAQCAREERS © 2019 Mississippi Silicon. All Rights Reserved.