US PATENT SUBCLASS 299 / 19
MINE LAYOUTS


Current as of: June, 1999
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299 /   HD   MINING OR IN SITU DISINTEGRATION OF HARD MATERIAL

19MINE LAYOUTS


DEFINITION

Classification: 299/19

(under the class definition) Apparatus comprising the structure or arrangement of an opening into the earth which is utilized to recover a valuable material.

SEE OR SEARCH THIS CLASS, SUBCLASS:

11, for a mine layout involving a process of stabilizing underground structure.

12, for a mine layout involving a process relating to mine safety.

SEE OR SEARCH CLASS

405, Hydraulic and Earth Engineering, 132+, for the structure of a shaft or tunnel, per se, including means to support shaft and tunnel walls, etc.

454, Ventilation,

168+, for mine structure relating to providing proper air supply and circulation for workers in a mine.