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 ...

Koppers Holdings Inc. misses on earnings expectations. Reported EPS is $0.67 EPS, expectations were $0.72. Koppers Holdings Inc. isn’t one of the 30 most popular stocks among hedge funds at the ...