The world's biggest mining excavators Mining Technology
The Bucyrus RH400, owned by Caterpillar, is the world's biggest hydraulic excavator. It was originally launched by Terex in Germany in 1997 but Bucyrus acquired the mining equipment division of Terex in 2010. Bucyrus was acquired by Caterpillar in 2011. The Bucyrus RH400 is a frontshovel excavator weighing approximately 889t.