Techniques of Controlled Blasting should also be introduced in the training topic. In many of the countries, programme of blast log evaluation has become mandatory, as per their safety regulation. 7.0. Conclusions - Training to blasting crew, supervisors and officials regarding various aspects of controlled blasting and ways to mitigate adverse impact are quite important. Drilling and blasting generally is recognized as the most cost-efficient way to crush rock and minerals. However, efforts to contain costs, increase production and mitigate adverse effects of blast to meet tighter aggregate specifications, to reduce production of both fines and oversize and to appease quarry neighbors adds complexity to drilling and blasting operations. Fortunately, technology continues to move the process from an art to a science. Proper blasting techniques with computers and micro-electronics have profoundly improved the design and use of drills, drill tools, blast-initiation products, explosives and seismographs. If the progress continues at this pace, days are not far, when we run our mines or excavation activities with no or very little nuisances of blasting. References: 1. Atlas Powder Company, Dallas, Texas, USA - “Explosive and Rock Blasting” 1987. 2. Sharma, P.D.; - ‘Overburden side-casting by blasting – Operating Large Opencast Coal Mines in a cost effective way’; Procc. of 1st Asian Mining Congress - Asian Mining: Towards a new resurgence, Seminar organised by MGMI at KOLKATA (India) from 16th – 18th January 2006. 3. Blasters’ Handbook – E.I.du Pont de Nemours & Co. (Inc.), Wilmington, Delaware 19898. 4. Gupta., R.N., Ghose., A.K., Mozumdar., B.K., Nabibullah., Md. - ‘Design of Blasting rounds with Airdeck pre splitting for Dragline and Shovel benches near populated Areas – A case study’, Int. Symposium on Explosives and Blasting techniques, N.Delhi, Nov. – 1990. 5. Sharma, P.D.; - ‘Control of adverse effects of Explosives Blasting in mines by using Shock tubes (Non-electric) Initiation system and its Future challenges’; Advances in drilling and blasting techniquesProcc. of DRILL BLAST ’99 – National Seminar on drilling and blasting, Bhubaneswar, (India) January 2000. 6. Sharma, P.D.; - ‘Open pit blasting with in-hole delays and / or pre-splitting of production blast – Measures to control adverse impact of complex vibration arising due to presence of underground workings in the vicinity or in otherwise sensitive areas’; Mining Engineers’ Journal, August 2006. 7. Nicholls., H.R., Jhonson., C. F. and Duvall., W.I., - ‘Blasting Vibrations and their effects on Structures’, USBM Bull. 656. (1971). 8. Sharma, P.D.; - ‘Improved Blasting technique is the key to achieve Techno-Economics of high production Underground Metalliferous mines’; Indian Mining & Engineering Journal, December 2006. 9. Lucca., F.J.; - “Tight construction blasting, Ground vibration basics, monitoring and prediction”; Terra Dinamica L.L.C (2003). 10. Sharma, P.D.; - ‘Improved Blasting with precision drilling patterns in Underground Metalliferous mines’; Procc. of ‘Golden Jubilee Seminar’ - present status of Mining and future Prospects, - Seminar organized by MEAI (April 2007) at Hyderabad, India. 11. Sharma, P.D.; - ‘Tunnel blasting – emulsion explosives and proper blast design are the prerequisite for better efficiency’; Journal of Mines, Metals & Fuels; September 2005.
________________________________________________________ Author: Partha Das Sharma, B.Tech(Hons.) in Mining Engineering E.mail: sharmapd1@gmail.com Website: http://miningandblasting.wordpress.com/
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