MINING OR QUARRYING

Introduced: September 1968

Classification Context

Section:: FIXED CONSTRUCTIONS
Class:: EARTH OR ROCK DRILLING; MINING
Subclass:: MINING OR QUARRYING

Description

E21C covers extraction methods and equipment for removing minerals, coal, ore, stone, and other solid materials from the earth through mining and quarrying operations. This subclass encompasses surface and underground extraction techniques, including opencast mining, underground mining systems, and quarrying methods for construction materials. Related specialized equipment such as mineral beneficiation, ore dressing, and sorting of extracted materials at the extraction site fall within this classification, while processing of minerals after extraction and beneficiation plant design are generally covered by other sections.

Related Keywords

CHISELS for mining or quarryingobtaining CLAY(S)COLLIERIESpercussive HAMMERSmining machinesmining MINERAL(S)QUARRYING

14 direct subcodes

Child Classifications

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E21C 25/00 Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam
E21C 27/00 Machines which completely free the mineral from the seam
E21C 29/00 Propulsion of machines for slitting or completely freeing the mineral from the seam
E21C 31/00 Driving means incorporated in machines for slitting or completely freeing the mineral from the seam
E21C 33/00 Trucks or other devices for transporting machines for slitting or completely freeing the mineral from the seam
E21C 35/00 Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups , or
E21C 37/00 Other methods or devices for dislodging with or without loading
E21C 39/00 Devices for testing the hardness or other properties of minerals, e.g. for giving information as to the selection of suitable mining tools
E21C 41/00 Methods of underground or surface mining; Layouts therefor
E21C 45/00 Methods of hydraulic mining; Hydraulic monitors
E21C 47/00 Machines for obtaining, or the removal of, materials in open-pit mines
E21C 49/00 Obtaining peat; Machines therefor
E21C 50/00 Obtaining minerals from underwater, not otherwise provided for
E21C 51/00 Apparatus for, or methods of, winning materials from extraterrestrial sources