There are many different variations in what hoist operators do. In general, a hoist is a device that is used to lift or lower a load, by means of a drum or lift-wheel around which a rope or chain wraps. They are often used in conjunction with cranes in order to move heavy loads to different locations, largely in construction or manufacturing companies but in many other aspects as well. Hoists can be operated manually, electrically, or pneumatically driven, and they use either chain, fiber, or wire as a lifting medium. The load is attached to the hoist with a lifting hook. When considering a hoist, there are two important characteristics: the lift medium and the power type, examples of which have already been given. Most commonly, electrically powered hoists are used. They either use chain or wire rope as their lifting medium. These hoists are used in a variety of applications and are subject to a number of problems which a hoist operator needs to be trained in. They only have a certain life expectancy, based on varying industry standards and how much lift and material is used. It’s important to have proper training for Overhead Crane Hoist Operator Training as well. Construction hoists are another popular type of hoist and are used in large-scale construction projects, like with high rise buildings or major hospitals. These hoists can be used to carry personnel, materials, and equipment quickly between the ground floor and higher floors, or between floors in the middle of a structure. Finally, mining hoists are used to raise and lower conveyances within a mine shaft. The three main types of hoists used in this application are drum hoists, friction hoists, and Blair multi-rope hoists.