Metal Mining — Part 1 MCQs with Explanations

Chip sampling is the standard method of sampling for the collection of samples in advancing development faces in metal mining. In chip sampling, small chips or rock fragments are collected from the exposed face of the development area. This method allows for the collection of representative samples that can be analyzed to assess the quality and composition of the orebody as mining progresses. Channel sampling involves cutting a channel or groove into the exposed rock face to collect a continuous sample along the length of the channel. While channel sampling is also commonly used in mining exploration and development, chip sampling is typically preferred for advancing development faces. Bulk sampling involves collecting large, representative samples of ore or waste material from a specific area for detailed analysis. This method is usually employed for assessing the overall grade and characteristics of a deposit. Radio meter refers to a device used for measuring radioactivity and is not directly related to the sampling method for advancing development faces in metal mining. Therefore, Option A: Chip sampling is the correct method for collecting samples in advancing development faces in metal mining.

Option A: Under hand method This option suggests that cut and fill stoping follows the underhand method. This statement is incorrect. The underhand method involves mining downward, which is not typically associated with the cut and fill stoping method. Option B: Over hand method This option suggests that cut and fill stoping follows the overhand method. This statement is correct. The overhand method involves mining upward, which is consistent with the cut and fill stoping technique where material is mined in horizontal slices starting from the bottom and moving upwards. Option C: Both A and B This option suggests that cut and fill stoping follows both the underhand and overhand methods. This statement is partially correct. While cut and fill stoping is predominantly associated with the overhand method, there are situations where it can be adapted to an underhand approach, although this is less common. Option D: Nil This option suggests that cut and fill stoping does not follow either the underhand or overhand methods. This statement is incorrect, as cut and fill stoping is a recognized mining method that primarily follows the overhand method. Conclusion: The correct answer is Option B: Over hand method because cut and fill stoping predominantly follows the overhand method, where mining progresses upwards in horizontal slices, making it the most suitable and commonly used method for this technique.

Over head mucker is the correct answer to “The ore loaded in shrinkage stoping by . . . . . . . .”. This question is standard in competitive examination syllabi for Metal Mining.

Selected places is the correct answer to “S.S.R is followed in . . . . . . . .”. This question is standard in competitive examination syllabi for Metal Mining.

Lessor is the correct answer to “If the ore body is thicker, the level interval will be . . . . . . . .”. This question is standard in competitive examination syllabi for Metal Mining.

Over hand stoping is the correct answer to “Rill stoping method is a form of . . . . . . . .”. This question is standard in competitive examination syllabi for Metal Mining.

40 - 60° is the correct answer to “The open raising employed at an inclination of . . . . . . . . with the horizontal, if strata is stong.”. This question is standard in competitive examination syllabi for Metal Mining.

All the holes in the slice is blasted is the correct answer to “In VCR, blasting is under taken.”. This question is standard in competitive examination syllabi for Metal Mining.

Sub level is the correct answer to “Top slicing is an u/g caving method. Which is a variation of . . . . . . . .”. This question is standard in competitive examination syllabi for Metal Mining.

Sill is the correct answer to “The, pillar which is left for support of lower level, during extraction calle . . . . . . . .”. This question is standard in competitive examination syllabi for Metal Mining.

Shrinkage is the correct answer to “For steeply dipping, massive ore body with hard horizontal rock, which mining method suitable.”. This question is standard in competitive examination syllabi for Metal Mining.

Resuing is the correct answer to “The method of stoping for narrow and steeply dipping ore with any type of ore and wall is . . . . . . . .”. This question is standard in competitive examination syllabi for Metal Mining.

Correct is the correct answer to “Vertical members of a square set is known as post where as horizontal members known as cap and grit.”. This question is standard in competitive examination syllabi for Metal Mining.

Develop efficient mineral extraction techniques is the correct answer to “In order for mining of minerals to be substainable we will need to . . . . . . . .”. This question is standard in competitive examination syllabi for Metal Mining.

Square set stoping is the correct answer to “Which of the following method may be approaching obsolenscence and proved to be the most expensive of all mining method.”. This question is standard in competitive examination syllabi for Metal Mining.

1m is the correct answer to “Ladder ways are used for men, what is the extended length of ladder above the maith.”. This question is standard in competitive examination syllabi for Metal Mining.

Draw point is the correct answer to “A place where are can be loaded and removed.”. This question is standard in competitive examination syllabi for Metal Mining.

Block caving is the correct answer to “If the strength of the roof is weak, unsupported, ore is massive and steep, the method employed is . . . . . . . .”. This question is standard in competitive examination syllabi for Metal Mining.

Bacterial is the correct answer to “Out of the two systems of leaching, if one is chemical, the other one is . . . . . . . .”. This question is standard in competitive examination syllabi for Metal Mining.

Diagonal line of extraction is the correct answer to “The most common system of stope extraction is to maintain as . . . . . . . .”. This question is standard in competitive examination syllabi for Metal Mining.

45° is the correct answer to “In shrinkage stoping the inclination of stope wall should be . . . . . . . .”. This question is standard in competitive examination syllabi for Metal Mining.

Gophering is the correct answer to “Extraction of small sized, irregularly unsystamatic underground working called”. This question is standard in competitive examination syllabi for Metal Mining.

All is the correct answer to “For a successful VCR stoping, which of the following is appropriate.”. This question is standard in competitive examination syllabi for Metal Mining.

30 - 40 is the correct answer to “Capacity of slusher is . . . . . . . . tph.”. This question is standard in competitive examination syllabi for Metal Mining.

230 - 300mm is the correct answer to “The raise boring consists essentially of drilling a pilot hole of diameter . . . . . . . .”. This question is standard in competitive examination syllabi for Metal Mining.

Zero is the correct answer to “The main advantage of drop raising is that number of workers in the lower level are . . . . . . . . except the operator of LHD.”. This question is standard in competitive examination syllabi for Metal Mining.

Finger rise is the correct answer to “A system of vertical or nearly vertical openings for transfering ore from a stope to a single delivery point.”. This question is standard in competitive examination syllabi for Metal Mining.

Square set is the correct answer to “In this method needs heavy supports comparative than other methods and also supporting costly.”. This question is standard in competitive examination syllabi for Metal Mining.

Resuing is the correct answer to “The method used for mining narrow veins or pay streaks, where ore occurs as a distinct band, can be separated easily from wall rocks, mining known as . . . . . . . .”. This question is standard in competitive examination syllabi for Metal Mining.

Lead stope is the correct answer to “The first or lowest slice often referred as . . . . . . . .”. This question is standard in competitive examination syllabi for Metal Mining.

Square set is the correct answer to “Costliest stoping method is . . . . . . . .”. This question is standard in competitive examination syllabi for Metal Mining.

Chip is the correct answer to “The most precise and fast collection of samples, the method is . . . . . . . . in u/g.”. This question is standard in competitive examination syllabi for Metal Mining.

Block caving is the correct answer to “In this mining method, in which masses, panels or block of ore are under cut to induce caving, permitting the broken ore to be drawn off below.”. This question is standard in competitive examination syllabi for Metal Mining.

u/g glory hole is the correct answer to “The foot wall shaft cross cuts are drawn to intersect the ore body and raises are made to connect the cross cuts; in under ground. The top of the raises are widened, the method of extraction is . . . . . . . .”. This question is standard in competitive examination syllabi for Metal Mining.

5 is the correct answer to “The deposit of iron ore in India is about . . . . . . . . % of the world.”. This question is standard in competitive examination syllabi for Metal Mining.

Loss of shear resistance to fill is the correct answer to “Excess pore pressure in backfill material is a cut and fill stope leads to . . . . . . . .”. This question is standard in competitive examination syllabi for Metal Mining.

Average grade is the correct answer to “Ore grade from which revenue from the recoverable reserves exactly equals to the cost of mining, treatment and marketing is called . . . . . . . .”. This question is standard in competitive examination syllabi for Metal Mining.

100 is the correct answer to “Raise driving by use of jora hoist to drive mechanised raising upto . . . . . . . . m long raises.”. This question is standard in competitive examination syllabi for Metal Mining.

Conventional sublevel is the correct answer to “The ring drilling and blasting employed in this stoping.”. This question is standard in competitive examination syllabi for Metal Mining.

Broken are is the correct answer to “The support in shrikage stoping is . . . . . . . .”. This question is standard in competitive examination syllabi for Metal Mining.