Apr 02, 2009. /Lesprom Network/. In response to a slumping economy, Nippon Paper Industries USA will extend its regular biennial maintenance closure from five to 16 days, with 75 to 80 of the mill's 220 employees furloughed during the temporary closure, as Peninsula Daily informed Lesprom Network. The Port Angeles mill, which makes paper used for telephone books and other custom paper, will be closed from April 27 to May 12. "The economic slowdown has negatively affected the uncoated mechanical grade market, and the shutdown is necessary to balance production with inventory," mill manager Harold Norlund said.