Filler metal

different metal is to be deposited. This is often done for hard-facing excavating tools or digger bucket teeth. A hard, but more expensive and sometimes brittle

types-of-excavating-tools-and-machineTypes of excavating tools and machine
from jigsdbest, ago in
it contains detail study about various study of excavating machine.

Data Mining with Rattle and R: The Art of Excavating Data for Knowledge …
Graham Williams, published 2011, 374 pages