Mar 02, 2010. /Lesprom Network/. Chile's industrial conglomerate Copec COP.SN, one of the world's biggest producers of cellulose, said it halted forestry operations in the areas hit by an earthquake this weekend, as Reuters agency informed Lesprom Network. Subsidiary Celulosa Arauco, Copec's forestry arm, said it is still evaluating the state of its facilities, but anticipates that some of them suffered severe damage.