Q241
Open questionThe immidiate roof is called
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Mining Engineering · all questionsMine Supports and Strata Control
Mine Supports and Strata Control
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Q242
Open questionIn massive rocks, when the bedding planes on them are more than
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Q243
Open questionThe anchorage support of resin capsule is
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Q244
Open questionGenerally the load on the prop plotted in
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Q245
Open questionDiamond formed in
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Q246
Open questionThe strength of diseased timber is
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Q247
Open questionCompressive strength of coal
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Q248
Open questionTriaxial tests usually performed by
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Q249
Open questionTime taken for errecting one wooden bar is
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Q250
Open questionCMRS has experienced with a system of roof botting known as
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Q251
Open questionMining situations which roof is called good and reliable.
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Q252
Open questionIt is a good practice to keep . . . . . . . . m of coal intact near a shaly roof during development
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Q253
Open questionThe value of the threshold convergence in long wall mining is . . . . . . . . mm/m.
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Q254
Open questionMethod of estimation in which shape and size of ore can be estimated called
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Q255
Open questionThe hydraulic oil used in hydraulic prop may be water with . . . . . . . .% of suitable oil.
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Q256
Open questionWhich kind of roof weathers quickly when exposed to atmospheric action and spalls off.
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Q257
Open questionIn case of weak rock over lain by strong rock, the bolt installed through them will act in
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Q258
Open questionThe widely acceptable theory behind roof bolt is
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Q259
Open questionA support with combination of sleepers above one another in a cris-cross manner
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Q260
Open questionIn high stress zone, the shape of the shaft cross section should be
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