This report examines how tunnels and adits are driven with a focus on safety, practical equipment choices, and cost considerations. It helps readers understand how modern tunneling practices were investigated and applied to reduce risks and save energy, capital, and lives.

The book summarizes findings from a Bureau of Mines examination of tunneling methods, equipment, work organization, and driving costs. It emphasizes real‑world results from various tunneling projects, comparing mounting methods for drills, shifts in crew roles, and the impact of debris clearance on productivity. The tone is practical, aiming to inform managers, engineers, and workers about effective, safer tunneling practices.

How different drill mounting systems affect setup time, crew fatigue, and hole quality
Practical notes on power sources, ventilation, and heat management in tunnels
Insights into mucking, timing of blasting, and minimizing delays after blasts
Concrete and timbering approaches used to improve stability and safety in varying ground conditions

Ideal for readers of mining engineering history and professionals responsible for planning, supervising, or evaluating tunnel construction projects.

"About this title" may belong to another edition of this title.

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