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drilling and blasting practices in iron ore mine in india

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A global trend is emerging in which mining companies are subcontracting out the total blasting services (including drilling). Some companies have even subcontracted all work functions at the mine and processing plant. Over time, mine management becomes fully reliant upon their explosive suppliers, to the extent that all in-house blasting

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172207 - GTUInfo . Present status of drilling and blasting practices in India and abroad: Methods of drilling for production of minerals from surface and underground mines, rotary,...

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Mining of Iron Ores | ispatguru. Drilling in the benches of open pit mining is done for production of iron ore with mechanized drills specific for each mining method The main objective of drilling operations is to create a hole of suitable diameter, depth and direction in rock for explosives to be placed for blasting …

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An approach to improve blasting efficiency in an iron ore mine

ABSTRACT This paper presents an approach to improve overall blasting efficiency in an iron ore mine. The problems existing in the mines were oversize fragmentation, severe backbreak, frequent secondary drilling and blasting operations, sloping bench faces and irregular bench profiles. Thorough analysis of the blasting practices and results was done in the search of key parameters affecting ...

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1 CSIR-Central Institute of Mining and Fuel Research, Dhanbad, India, ... 250 mm diameter drill in iron ore opencast mines. Table 1 (Sinha and Nair,1982) presents the level of dust generation during drilling in coal, limestone and iron ore which reveals that air borne dust generated ... form of drilling practices used in Indian mines.