Chesterfield Lumber was founded in 1939 by J.E. Triplett in Chesterfield, S.C., then moved to Monroe, N.C., and eventually to Darlington, S.C. It is an independent sawmill operation that processes nearly 75 truckloads of yellow pine each day and has a production capacity of 400,000 board-feet, per-day. The business serves much of the East Coast as a manufacturer of yellow pine lumber, with direct sales and sales via brokers. The company serves retailers and treating plants are the primarily.