A chain elevator - is an elevator in which a chain is used as a hauling organ .

A counterbalance - is a device for balancing booth's mass and part of usefull load.

A depth of booth - is a distance for horizontal lines between the internal surfaces of booth's walls, that it is measured athwart the width of booth.

A depth of mine - is a distance for horizontal lines between the internal surfaces of mine athwart to the width of mine.

A depth of mine's hollow - is distance for vertikal from the level of clean floor of lower landing (load) ground to the clean floor of mine's hollow.

A group management - is a control system by joint work two and more elevators.

A height of booth - is distance for vertical lines between the level of threshold and ceiling of booth.