Koppers, a global provider of treated wood products, will invest at least $23 million and increase the number of workers at its North Little Rock, AR facility over the next two years. The ...

Koppers Inc. will spend at least $23 million in the next couple of years modernizing its 157-acre plant in North Little Rock, where some 1.5 million railroad crossties are processed and treated ...

(TB&P) — Koppers, a global provider of treated wood products, announced Tuesday that it plans to invest a minimum of $23 million and increase the number of workers at its North Little Rock ...