Navistar International Corp. will be rolling into 2011 offering heavy trucks equipped only with Navistar power—a move that dealers, truckers and investors will be watching closely in a market that is expected to see 50% to 60% gains in sales next year. Photo: Tudor Van Hampton for ENR Jim Hebe, Navistar senior vice president, discusses the MaxxForce engine at the 2009 World of Concrete. The Warrenville, Ill.-based manufacturer will also be the only truck maker not using selective-catalytic reduction (SCR), a clean-air technology that requires drivers to fill up a tank of urea periodically to neutralize nitrogen-oxides (NOx) in the
Arch dams, classically curved monoliths situated in narrow valleys, are not as common as other types of dams, such as embankment dams and gravity dams. ENR takes a look at some of the biggest arch dams in the world, both completed and under construction.