Drilling and Blasting of Rocks FranciscoJavier.. Rock breakage with explosives has existed since the seventeenth century when black powder came into use in mining. Since then it has progressed from the invention of dynamite to the use of heavy ANFO. During the past two decades, there have been numerous technical contributions which have brought a better understanding of rock fragmentation with explosives, an improvement in drilling equipment and a noticeable evolution in the development of new explosives and blasting accessories.
Drilling and Blasting of Rocks FranciscoJavier. from www.jemcoblasting.com
Web 1. Rock Drilling Methods 2. Rotary Percussive Drilling 3. Rotary Percussive Drilling Accessories 4. Rotary Drilling with Rolling.
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