Directory
References
Discover
C. H. Shaw
American machinist
Learn about this topic in these articles:
innovations in drilling machinery
- In drilling machinery
Shaw, a Denver machinist, before 1890. Cuttings dropped out by gravity. This machine was called a stoper when it was used in Colorado and California mines. A pneumatic feed held the machine in place and fed the steel into the rock. These two developments, hammering…
Read More