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Hand Drilling and Breaking Rock for Wilderness Trail Maintenance
Table of Contents
Introduction
Description of Tools
The Problem
History
Technique
Drilling
Breaking Rock
Rock Types
Wedges (Plugs) and Feathers
Miscellaneous Tips
Picking
Maintenance
Drilling Steel
Drilling Hammers
Wedges and Feathers
Picks
Sources of Supply
Drilling Steel
Drilling Hammers
Wedge and Feather Sets
Picks
Conversion Tables
Bibliography
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