Front-end loaders (and other types of loaders) are a machinery used for loading materials into or onto another type of machinery. This is done by a bucket attached to hydraulically controlled arms, moved around by a rigid or articulated body on wheels. In mining they have multiple uses; for example they could be used for loading trucks with various materials, loading trains for export/transport, loading materials onto conveyor belts or into crushers or rolling and unrolling large cables.
Loaders used in underground mining are referred to as 'boggers', 'muckers' or 'LHD's' (load haul dump) and are similar machines to front end loaders. For increased safety, they are commonly remotely controlled using radio links and cameras in underground operations.