In underground mining a hoist is used to raise and lower conveyances within the mine shaft. Drum hoists are the most common type of hoist. Single-drum hoists can be used in smaller applications, however double-drum hoists easily allow the hoisting of two conveyances in balance (i.e. one skip being lifted while a second skip is being lowered).

Friction hoists are mounted on the ground above the mine shaft, or at the top of the headframe. They utilize tail ropes and counterweights and do not have the haulage rope fixed to the wheel, but instead passed around it.

An air winch, sometimes known as an air tugger, is an air-powered version of a winch. It is commonly used for the lifting and the suspension of materials. In the oil and gas, construction, and maritime industries, air winches are frequently preferred to electric, diesel, and hydraulic winches because of their durability, versatility, and safety.
In underground mining a hoist is used to raise and lower conveyances within the mine shaft. Drum hoists are the most common type of hoist. Single-drum hoists can be used in smaller applications, however double-drum hoists easily allow the hoisting of two conveyances in balance (i.e. one skip being lifted while a second skip is being lowered).

In gold mining, froth flotation is used to separate gold from gangue by utilizing gold’s hydrophobicity.


Flotation uses bubbles that are introduced into a pulp and rise through the pulp. In the process, hydrophobic particles (gold and other minerals) become bound to the surface of the bubbles. These bubbles rise through the slurry and are collected from the surface.


Complete flotation cells are available