Domestic Producers Of Principal Manganese Products In 2023

This table provides a detailed overview of U.S. companies producing key manganese products in 2023, including ferromanganese (FeMn), silicomanganese (SiMn), and synthetic manganese dioxide (MnO2). These materials are critical for various industrial applications, such as steelmaking, battery manufacturing, and chemical production. Tracking domestic production sources and processes is essential for understanding supply chain stability, economic contributions, and technological trends within the manganese sector, which supports both manufacturing and energy storage industries.

The data reveals that manganese dioxide production is concentrated among four plants operated by three companies, with Borman Specialty Materials in Henderson, NV, Energizer Holdings in Marietta, OH, and Vibrantz Technologies in Baltimore, MD, and New Johnsonville, TN, all utilizing electrolytic or chemical processes. Ferromanganese and silicomanganese production is more limited, with Eramet Marietta, Inc. and Felman Production, LLC being the sole domestic producers, both employing electric furnace methods at their Ohio and West Virginia locations. Notably, Eramet Marietta produces both FeMn and SiMn, while Felman Production also manufactures both alloys. This distribution highlights a specialization in synthetic manganese dioxide production domestically, while alloy production remains concentrated in a few facilities, reflecting the niche but vital role of these products in U.S. industry.