See attachment. Small dia holes can be drilled but the solution given in attachment is more effective
Arunachalam
On Thursday, September 25, 2014 7:24 PM, "Pradeep Kumar pradeepminer@yahoo.com [dgms_mail_list]" <dgms_mail_list@yahoogroups.com> wrote:
Dear Group
Is it possible to conduct Deep hole blasting in conjunction with short holes. Mean to say that, other than drilling PILOT holes in front row, what should we do to avoid generation of big size boulders ?
Please share your experience, if any.
Pradeep Kumar
Is it possible to conduct Deep hole blasting in conjunction with short holes. Mean to say that, other than drilling PILOT holes in front row, what should we do to avoid generation of big size boulders ?
Please share your experience, if any.
Pradeep Kumar
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View attachments on the web Posted by: B Arunachalam <iyer_arunachalam@yahoo.ca>
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Directorate General of Mines Safety, Ministry of Labour & Employment, Govt. of India
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