Q181
Open questionCoalification has taken place in the order of
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Mining Engineering · all questionsIntroduction to Mining Engineering
Introduction to Mining Engineering
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Q182
Open questionOre grade for which revenue from the recoverable reserve exactly equals the cost of mining, treatment, and marketing is known as
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Q183
Open questionIn a surface mine blast, the peak particle velocity (V in mm/s) is estimated from the equation where SD is square root scaled distance. If at a distance of 100 m from the blast site the permissible peak particle velocity is 25 mm/s, the maximum charge per delay in kg is
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Q184
Open questionWhich of the following thick seam methods can be suitably applied for a deposit of any shape containing both hard and weak coals, self igniting and emitting firedamp where stability of wall rocks is of no importance
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Q185
Open questionOut of the support categories given for an underground coal mine, identify the 'active support'.
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Q186
Open questionWhen the Young's Modulus is small, failure of immediate roof will initiate from?
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Q187
Open questionIn our country a coal seam is classified as thick seam if it is more than
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Q188
Open questionAccording to statute what is the maximum permissible charge per hole in underground coal mine with SB technology?
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Q189
Open questionCut and fill stoping can be operated
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Q190
Open questionWhich one of the following is the most likely mode of slope failure for waste dump
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Q191
Open questionA longwall face cut by double back shuffle method can be only worked with
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Q192
Open questionWhat is the relationship between break-even stripping ratio (BESR) and ordinary stripping ratio (OSR)?
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Q193
Open questionWhich of the following unique mining method is known as novel method?
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Q194
Open questionWhich of the following factor is considered for calculation of cycle time of excavating machine such as shovel, drag line etc?
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Q195
Open questionWhich of the following method is still followed in maximum number of underground coal mines in India
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Q196
Open questionWhich of the following method may be approaching obsolescence and proved to be the most expensive of all mining methods?
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Q197
Open questionThe mining method used in thick and steep coal seam, where the slices are neither horizontal nor parallel to the inclination of the seam, is called
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Q198
Open questionSize of pillars is decided based on
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Q199
Open questionWhy different types of explosives are not normally charged in the same shot hole?
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Q200
Open questionWhich of the following method is known as vertical crater retreat, VCR (patented) method?
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