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TUNNELS, SHAFT AND DEVELOPMENT HEADINGS BLAST …
REVEY Associates, Inc. 2005 Page 1 TUNNELS, SHAFT AND DEVELOPMENT HEADINGS BLAST design INTRODUCTION Tunnels, shafts, and raises are developed for a variety of purposes. In mines DEVELOPMENT HEADINGS provide; mine access for men and materials, ore and waste hoisting, and ventilation paths. Shafts are also used in civil construction projects. In hydroelectric projects, shafts and tunnels are used to build spillways around dams, and penstocks for water feed to underground power plants.
REVEY Associates, Inc. 2005 Page 1 TUNNELS, SHAFT AND DEVELOPMENT HEADINGS BLAST DESIGN INTRODUCTION Tunnels, shafts, and raises are developed for a variety of purposes.
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