Why Every Western Automaker Is Visiting This Remote Part of South Africa

MBOMBELA, South Africa—A half-century-old company on the outskirts of South Africa’s Kruger National Park has found itself in a fortuitous spot as Western automakers push to move their electric-vehicle supply chains away from China.

Manganese Metal Co., based in the sleepy town of Mbombela, is the largest of just a handful of refiners of battery-grade manganese located outside China. Used mostly for making steel, manganese is increasingly replacing more expensive and harder-to-source minerals such as cobalt and nickel in the lithium-ion batteries that power electric cars, smartphones and laptops.