Which of the following prime characteristic the nonel blasting has?
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Mining Engineering · all questionsDrilling and Blasting
Drilling and Blasting
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The main purpose of self rescuer is to enable the wearer to escape through an atmosphere resulting after a . . . . . . . . or after an . . . . . . . . in a mine.
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Cyclone, bag filter and scrubber can be used for control.
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A two phase system in which an inner or dispersed phase is distributed in an outer called
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The secondary barrier also called
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The dust generally not used for spraying in coal faces.
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The tubs capacity in direct rope haulage varying from when pedestal bearing are used.
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No percentage of firedamp is explosive, when the percentage of oxygen is . . . . . . . . or less as per coward diagram.
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Wedge cut pattern commonly used for . . . . . . . .
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ANFO initiated by No. 8 detonator, in non mining practice.
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The basic principle behind the pressure survey in a mine is depend as . . . . . . . . theorem.
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What is the characteristic of velocities considered in Euler's equation.
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If the electricity is used the motors, switch gears and transformers should be provided with . . . . . . . . enclosures.
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Horizontal roadway driven within ore body between h/w and f/w right angles to drift.
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The minimum air quantity required at all working places in B/P is.
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Small magzines in mine premises are accorded the licence in the form.
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The plane of rotation of the vanes of anemometer should be as near as
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When explosive charges in a hole is separated by air gaps in stead of stemming materials then the process is known as
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To deal with the misfires a relieving hole shall be so placed that at no point shall it be nearer than "A" cm from the misfired hole. A is given by
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The isolation stopping in I and II degree gassy coal mine should have minimum thickness of
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