Development of Mineral Deposits Mid - I, September - 2014
1.According to stages in life of mine the searching of an ore occurs in ........ stage?
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Prospecting
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exploration
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exploitation
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reclamation
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Answer: A
2.Stages in life of mine ........ Method is used for ‘deeper deposits’?
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In Direct method
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Direct method
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both
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none of the above
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Answer: A
3.The angle of the slope of the bench from the horizontal is called ......... ?
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Pit slope angle
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bench slope angle
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berm
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none of the above
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Answer: B
4.Horizontal ledges situated on the non-productive side of the open pit mine are called ......?
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Berm
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bench
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bench angle
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non-productive material
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Answer: A
5............... Is also known as in-going entrance or opening trench?
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Ridge cut
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fan cut
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box cut
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none of the above
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Answer: C
6.What are the two methods involved in opencast mining for operation of removing OB and extracting mineral ............ and .......... ?
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Excavation and production
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development and reclamation
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drilling and blasting operations
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manual quarrying and mechanical opencast working
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Answer: D
7.In which conditions the famous heavy machinery “bucket wheel excavator” used ............. ?
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Soft rock conditions
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hard rock conditions
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cutting stone
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coal
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Answer: A
8.In open-pit mining (copper) the height of the bench must be .............. m?
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I8-24
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10-12
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15-20
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12-18
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Answer: D
9.In which method the ore is extracted in horizontal slices and replaced with backfill material ....... ?
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Long wall method
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sub-level caving
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cut and fill stopping
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none
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Answer: C
10.......... Is the common example for low explosives?
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Gun-powder
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ANFO
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slurry
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none
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Answer: A
12....................... and .......................... methods both are the basic methods used by the people in ancient days for then social development.
Answer: MINING AND AGRICULTURE
13.According to mining what are the naturally occurred mineral substances from the earth for the purpose daily household uses ..................................................?
Answer: SOLIDS, LIQUIDS AND GASSES
14.Bucket wheel excavator presently used in ....................................... mine?
Answer: NEYELI, LIGNITE
15.The room and pillar method comes under ................................. method
Answer: UN-SUPORTED METHOD
16.A low explosive is fired by .................................... ?
Answer: IGNITION OR FIRE
17.In purcussive drilling ................................... type of drill bit is used?
Answer: CHISEL
18.Ore handling and treatment plants constructed in ....................................... stage?
Answer: DEVELOPMENT STAGE
19.A front or more often sloping surface bounding the bench on the side of the worked out space is called .................................... ?
Answer: HIGH WALL
20.Longwall mining method is also comes under .......................................... method.
Answer: CAVING METHOD