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PCE
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DIFF Subgroup
E21C 41/30

for ores, e.g. mining placers

Introduced: January 1990

Full Title

Full titles differ between systems:

IPC:

Methods of underground or surface mining; Layouts therefor > Methods of surface mining; Layouts therefor > for ores, e.g. mining placers

CPC:

Methods of underground or surface mining (E21C45/00 takes precedence); Layouts therefor (for peat E21C49/00) > Methods of surface mining (machines for obtaining, or the removal of, materials in open-pit mines E21C47/00); Layouts therefor > for ores, e.g. mining placers

No child classifications to compare. This is a leaf node in both IPC and CPC.