Doosan is introducing a high-performance, heavyweight crawler excavator in the shape of the DX800LC-5B. This machine is aimed at the 80tonne crawler excavator class in emergent territories and is said to offer optimum value to the end-user. Advantages are said to include high productivity and fuel efficiency, as well as operator comfort, improved reliability and durability and maximum uptime. It is designed to meet the needs of heavy-duty quarrying applications as well as major infrastructure construction projects.