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Mining excavators are heavy construction equipment that consists of a boom, dipper (or stick), bucket and cab that is on a rotating platform known as the 'house'. The house sits atop an undercarriage with tracks or wheels. They are a natural progression from the steam shovels and often mistakenly called power shovels. All movement and functions of a hydraulic more

Mining excavators are heavy construction equipment that consists of a boom, dipper (or stick), bucket and cab that is on a rotating platform known as the 'house'. The house sits atop an undercarriage with tracks or wheels. They are a natural progression from the steam shovels and often mistakenly called power shovels. All movement and functions of a hydraulic excavator are accomplished through the use of hydraulic fluid, which hydraulic cylinders and hydraulic motors. Due to the linear actuation of hydraulic cylinders, their mode of operation is fundamentally different from cable-operated excavators which use winces and steel ropes to accomplish the movements.

Bucket-wheel excavator are heavy equipment that is used in surface mining. The primary function is to act as a continuous digging machine in large scale open pit mining operations. That sets BWEs apart from other large scale mining equipment, such as bucket chain excavators, is their use of a large wheel consisting of a continuous pattern of buckets used to scoop material as the wheel turns. They are amongst the largest vehicles ever constructed and the largest BWE ever built, Bagger 293, is the largest terrestrial land vehicle in history by weight (14,200 tonnes) according to the Guinness Book of World Records.

Bucket chain excavator is a piece of heavy equipment used in surface mining and dredging. It uses buckets on a revolving chain to remove large quantities of material. It has similar characteristics to bucket-wheel excavators and trenchers. They remove material from below their plane of movement, which is useful if the pit floor is unstable or underwater. The first documented use of a bucket chain excavator was in 1859. It was developed by Alphonse Couvreux, a French entrepreneur. The excavators from Couvreux were used in the construction of the Suez Canal.

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