Photo by Tudor Van Hampton for ENR Between 2002 and 2006, Caterpillar allegedly shipped 590,000 diesel engines that were missing emission controls. It has agreed to pay $2.55 million and recall non-compliant engines, according to a federal consent order. Related Links: Caterpillar, EPA Clear the Air Over Diesel Engine Recall Caterpillar Settlement Touches Dozens of Heavy Equipment Brands Caterpillar Inc. is recalling diesel engines and will pay $2.55 million in civil penalties under a Clean Air Act federal consent decree made public today.The settlement, released on July 28, says that the Peoria, Ill.-based manufacturer shipped more than 590,000 on- and
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.