Compressed Air Plant The Production, Transmission and Use of Compressed Air Classic Reprint

Excerpt from Compressed Air Plant: The Production, Transmission and Use of Compressed Air

Among rock-drills, the old piston type has been little changed.

Its field of work has become somewhat narrower, chiefly because of the improvements and larger use of hammer-drills for nearly all kinds of rock excavation.

For this edition a number of the chapters have been entirely rewritten and several have been expanded. As it was not desired to increase the size of the book, added space has been made by condensation and omission of old matter. The matter contained in the appendix to the 1913 edition has been incorporated in Chapter XX.

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