Related Links: Caterpillar Rolls Out Hybrid Excavator as Layoffs Hit Mining Division Caterpillar's Hybrid Excavator Pays Back in One Year At first glance, Caterpillar's new 336EH hybrid excavator could be mistaken for the non-hybrid 336E. It has the same profile as the existing machine, distinguished by only a small "hybrid" label near the rear. For operators sitting in the cab, the only sign they are running a hybrid excavator is a little green bar on the display console, which details fills and empties as the bucket swings during a work cycle.As an operator runs it for a few work cycles,
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.