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Drilling & Blasting

01 September 2006 | Drilling & Blasting
Firing pattern and stemming column adjustments enhance blast performance at a limestone quarry in the PhilippinesBy Dr Piyush Rai, reader in mining engineering; Bhanwar Singh Choudhary, senior...
01 September 2006 | Drilling & Blasting
The trend in UK quarrying to outsource drilling and blasting to external suppliers is undoubtedly an opportunity for specialist contractors, but one which comes with a need to adopt both modern...
01 February 2006 | Drilling & Blasting
Atlas Copco to launch silenced drill rig for noise-sensitive sitesAtlas Copco are set to launch the world’s first ROC-series surface drill rig with a substantially reduced noise level, making it the...
Tagged in: Atlas Copcodrilling
01 February 2005 | Drilling & Blasting
Airblast generation, propagation and predictionThe authors, P.K. Singh, M. Klemenz and C. Niemann-Delius, are with the Institute of Mining Engineering III and the Institute of Technical Acoustics at...
01 February 2005 | Drilling & Blasting
A study of the impact of stiffness ratio on the fragmentation of sandstone strata in an opencast coal mineBy Dr Piyush Rai*, Abhai Kumar Ranjan** and B. Singh*** The ratio of bench height (H) to...
02 February 2004 | Drilling & Blasting
The effect of prill type and mixing techniqueby Rob Farnfield, technical services manager with Exchem Explosives and Andy Wetherelt, lecturer in mining engineering at Camborne School of Mines,...
Tagged in: Exchem
02 February 2004 | Drilling & Blasting
For efficient blasting practice the parameters incorporated in a blast design can be categorized as: rock parameters, explosive parameters and blast-design parameters. Blasting results are sensitive...
Tagged in: blast design
02 February 2004 | Drilling & Blasting
What the user should knowThe dictionary definition of calibration is: to determine by measurement or comparison with a standard, the correct value for each scale reading on a device1. Blast...
Tagged in: seismograph
02 February 2004 | Drilling & Blasting
Independent test results of a new blasting techniqueIn a conventional quarry blast gas pressure is immediately relieved through the top of the shot, greatly increasing the potential for airblast and...
03 March 2003 | Drilling & Blasting
How to deal effectively with airblast/vibration complaintsToday’s quarry operators face considerably greater responsibilities and liabilities than ever before. With reference to figure 1, an operator...
03 March 2003 | Drilling & Blasting
Phil Robinson of Exchem Explosives’ technical service department recalls one of his more unusual shotfiring training courses When an enquiry came in to run a quarry shotfiring training course on St...
Tagged in: Exchem
01 May 2002 | Drilling & Blasting
WCD Sleeman & Sons choose Atlas Copco drill rigsFrom their base in Frome in the West Country, WCD Sleeman & Sons Ltd supply drilling and blasting services to a total of 18 quarries in...
01 May 2002 | Drilling & Blasting
Another performance aspect in primary blastingSome years on from its first widespread use in the quarrying industry, there is now little doubt that laser profiling of free rock faces in quarrying...
Tagged in: Orica
01 May 2002 | Drilling & Blasting
The use of modern technology to measure blast performance by Rob FarnfieldThe last decade has seen many developments in the field of blast performance monitoring. The Technical Services Department of...
Tagged in: Exchem
01 May 2002 | Drilling & Blasting
The impact of correct drill rig selection on downstream processes Quarrying as a process comprises a number of consecutive sub-processes — drilling, blasting, secondary breaking, loading,...
Tagged in: SandvikDrilling

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