The Blasting of Rock in Mines, Quarries, Tunnels Etc
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Excerpt from The Blasting of Rock in Mines, Quarries, Tunnels Etc: A Scientific and Practical Treatise for the Use of Engineers and Others Engaged in Mining, Quarrying, Tunnelling, & and for Mining and Engineering Students
It is a remarkable fact that the theories of rock blasting which have been generally adopted, do not take into account the in¿uence of the form of the chamber employed, seeing that the initial force of the blast, and the resistance of the rock will largely depend thereon for any direction of the line of resistance.
The methods by which the rules and formula were deduced are fully explained, and examples of all the more important calculations are given to assist the engineer to deal with any question that may arise in practice, especial attention being directed to how the greatest economy may be attained in the boring of holes and consumption of explosive.
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