Surface Mining 2

b

1. It is defined as the ratio of overburden to ore at the ultimate boundary of the pit where the profit margin is zero.

a. Maximum Allowable Break-Even Ratio

b. Maximum Allowable Stripping Ratio

c. Maximum Allowable Ultimate Boundary

d. Maximum Allowable Pit Limit

d

2. A mining method that requires many benches and resembles a (roughly) circular pyramid, inverted in the earth, each successive bench being cut to a smaller radius because of the slope imposed by safety considerations.

a. Underground Mining

b. Glory Hole Mining

c. Placer Mining

d. Open Pit Mining

a

3. Volume of overburden/weight of ore for entire ore body or cross-section.

a. Overall Stripping Ratio

b. Maximum Allowable Stripping Ratio

c. Maximum Allowable Pit Limit

d. Overall Cross-Section

b

4. The initial entry or a wedge-shaped prism of rock which must be removed to establish a new bench face in Open Pit Mining

a. Triangle Cut or Three-Sided Cut

b. Box Cut or Drop Cut

c. Diamond Cut

d. Baguette Cut

a

5. Refers to removing overburden external to the mineral deposit and removing waste within the confines of the open pit.

a. Stripping

b. Mining

c. Ore Blocking

d. Kriging

b

6. Volume of overburden/weight of ore at economic pit limit

a. Overall Stripping ratio

b. Maximum Allowable Stripping Ratio

c. Pit Limit

d. w : o

a

7. It is the process of obtaining useful minerals from the earth's crust and includes both underground excavations and surface workings.

a. Mining

b. Quarrying

c. Stripping

d. Excavating

c

8. Means searching for ore

a. Krigging

b. Reconnaissance

c. Prospecting

d. Development

c

9. In only one instance does Srmax not establish the pit limit or exceed SRo in magnitude, and that occurs when

a. the deposit is flat, tabular and of constant thickness

b. the surface is flat

c. both a and b

d. none of the above

a

10. It is the work of driving openings to and in a proved ore body to prepare it for mining and transporting the ore.

a. Development

b. Production

c. Exploration

d. Haulage

a

11. It is a mineral property, the value of which has not been proved by exploration.

a. Prospect

b. Ore

c. Outcrop

d. Overburden

b

12. Sometimes referred to as open cut mining that can be employed in any mineral deposit in any rock type lying near or on the surface where the excavation is open to the sky and weather.

a. Placer Mining

b. Open Pit Mining

c. Underground Mining

d. Quarrying

c

13. It is the work involved in gaining a knowledge of the size, shape, position and value of an ore body.

a. Reconnaisance

b. Prospecting

c. Exploration

d. Kriging

d

14. In an open pit mine a bench forms a single level of operation above which minerals and waste materials are excavated from the bench face.

a. Berm

b. Switch Back

c. Multiple-Bench

d. Single-Bench

e

15. It is the work of mining and marketing the ore.

a. Reconnaisance

b. Exploration

c. Prospecting

e. Exploitation

c

16. The initial step in open-pit mining design is the compilation of a _______ or, as it is sometimes referred to, a final pit design.

a. Short-Range Mining Plan

b. Short-Range Production Plan

c. Long-Range Mining Plan

d. Long-Range Production Plan

a

17. In a typical bench mining operation, 1 ft . of ore face must be exposed for each 4 to 5 tons of required daily production. Supposed the required daily production is 20,000 tons, then advance stripping of the bench face must continue until:

a. 4000 - 5000 ft.

b. 10,000 -12,000 ft.

c. 2,000 - 3,000 ft.

d. 6,000 - 7,000 ft.

a

18. A type of Open Pit Mining that normally can be employed in any massive, thick-bedded, wide-vein or tabular deposit that lies at or extends to a depth greater than that suitable for single bench mining.

a. Multiple-Bench

b. Strip Mining

c. Single-Bench

d. Quarrying

d

19. Once a long-range open pit mining plan has been established, it is essential to develop a series of ____________. These will define the intermediate steps required to reach the final pit limits under physical, operating and legal constraints.

a. Long-Range Production Plans

b. Short-Range Production Plans

c. Long-Range Mining Plans

d. Short-Range Mining Plans

b

20. Commonly considered as the surface exposure of a mineral deposit.

a. Vein

b. Outcrop

c. Stockworks

d. Bonanza

d

21. Is the term mainly applied to the mining of near-surface seams of coal. Most stripping is effected in bedded sedimentary formations.

a. Placer Mining

b. Camote Mining

c. Compressor Mining

d. Strip Mining

a

22. A mineralized zone having a more or less regular development in length, width and depth to give it a tabular form and commonly inclined at a considerable angle to the horizontal.

a. Vein

b. Dike

c. Paystreak

d. Placer

d

23. A mineral deposit that can be worked at a profit under the existing economic conditions.

a. Tailings

b. Waste

c. Gangue

d. Ore

c

24. Supplements the pit design and reserve estimation work that is usually done for feasibility and budget studies and is an important element of the decision making process:

a. long-range mine planning

b. short-range mine planning

c. long-range production planning

d. short-range production planning

d

25. For proper cycle balance in hauling, the cycle time for trucks must be:

a. Half the tome required to spot and load the entire truck fleet.

b. Equal to the time required to spot and load the entire truck fleet.

c. Greater than the time required to spot and load the entire truck fleet.

d. Less than the time required to spot and load the entire truck fleet.

b

26. An excavation made in the earth to extract minerals.

a. Shaft

b. Mine

c. Glory Hole

d. Dog Hole

a

27. Is the term used to describe the surface mining of rock, such as marble, granite, limestone, slate, etc., that are valuable for either their mechanical or chemical properties.

a. Quarry Mining

b. Solution Mining

c. Glory Hole

d. Placer Mining

b

28. An ore that yields a large margin of profit per ton.

a. Low grade ore

b. High grade ore

c. Break even grade ore

d. Stockpiled ore

c

29. Means soil and/or rock materials from surface or underground mining operations with no present economic value to the generator of the same.

a. Ore block

b. Gangue

c. Mine Waste

d. Mill tailings

c

30. In open pit mine design, these are located on each section so the ore grade line supports a stripping ratio of corresponding to the break-even stripping ratio or allowable stripping ratio:

a. cut-off grades

b. pit slope angle

c. pit limits

d. bank slopes

a

31. Road grades are based on the following criterion:

a. from trucks performance charts on breaking and speeding

b. soil cohesion

c. pit stability

d. all of the above

c

32. The best road gradient is between the range of:

a. 7-12%

b. 8-15%

c. 8-12%

d. 7-15%

a

33. A failure that occurs below the toe of the bank:

a. base failure

b. slip circle failure

c. slope failure

d. toppling

c

34. A failure that occurs intermediate between the crest and the toe:

a. base failure

b. slip circle failure

c. slope failure

d. toppling

b

35. The recommended pit slope for the solid country rock is:

a. 60-80o

b. 63-72o

c. 45o

d. 50o

d

36. The recommended pit slope for gravel is:

a. 22o

b. 35o

c. 16o

d. 37o

c

37. The area of the cross-section of an ore body is determined using

a. Pantograph

b. Transit

c. Planimeter

d. GPS instrument

b

38. Which of the following is classified as continuous mining?

a. shovel

b. dredging

c. scraper

d. dragline

d

39. Which of the following is classified as both excavating and rock fragmentation?

a. ripping

b. hydraulicking

c. blasting

d. both b and c

a

40. Whittle 3D computer software produces a

a. Crude pit design

b. Smoothened pit design

c. Pit design with ramps

d. Pit design with Mill Plant

c

41. Computer-aided mine design is made possible by

a. Microsoft

b. IBM

c. Mine application softwares

d. Laptop

b

42. The vertical height of working benches shall be kept at a maximum of ______ meters above the maximum reach of the shovel/loader being used.

a. 2 meters

b. 1.5 meters

c. 3.5 meters

d. 5 meters

d

43. One of these is classified as both rock fragmentation and rock penetration.

a. ripping

b. drilling

c. impact

d. jet

b

44. In general, with the off-the-shelf technology, the lowest cost of penetration in soft rock is obtained using:

a. percussion drilling

b. rotary-drag bit drilling

c. rotary-roller bit drilling

d. rotary-percussion drilling

a

45. All unit operations involved in excavating or moving bulk materials during mining.

a. Materials handling

b. Loading

c. Hauling

d. Hoisting

c

46. The maximum slope at which a heap of any loose material will stand without sliding or come to rest when poured on dumped in a pile or on a slope.

a. angle of draw

b. working slope

c. angle of repose

d. gradient slope

a

47. The line defining the area in which open pit operation may be conducted to obtain maximum amount of ore material and minimum amount of waste material.

a. optimum pit limit

b. bench slope

c. working slope

d. gradient

a

48. The cubic feet or ore per ton in deposit.

a. tonnage factor

b. swell factor

c. mine head

d. mill head

d

49. The angle, measured in degrees of deviation from the horizontal at which the earthy or rock material will stand in an excavated terracelike out in an open pit mine or quarry.

a. angle of draw

b. pit slope

c. angle of repose

d. bench slope

b

50. A surveying software

a. Datamine

b. Liscad

c. Gemcom

d. Iomega

d

51. Mining method that is exclusively by retreating method with the cut-off grade serving only to define the fringes of major ore zones.

a. Solution mining

b. Cut and fill

c. Block Caving

d. Open Pit

b

52. Tailings and slurries may be used as backfill in a subsidence area.

a. True

b. False

c. Permissible

d. Depending on the specific gravity

b

53. The volume of production at which total revenue equals the total cost.

a. Break-even stripping ratio

b. Break-even volume

c. Tonnage factor

d. Overall stripping ratio

d

54. Advantages offered by computerization

a. speed

b. accuracy

c. 2D & 3D view

d. all of the above

a

55. It is usually at a lower angle than the final pit slope and should be maintained at the maximum safe angle to increase pit efficiency and lower the operating costs.

a. Working pit slope

b. Berm

c. Bench

d. Waste Dump

b

56. One of the major components of an open pit, its other use is to retard or contain falling boulders or rocks.

a. Roads

b. Berm

c. Switchback

d. High wall

c

57. A place where soil and/or rock materials from the surface or underground mining operations with no present economic value are accumulated or collected.

a. Stockpile Area

b. Tailings Pond

c. Mine Waste Dump

d. Silt Pond

a

58. Customarily is a second tool, however, it can also be used as primary tool in surface mining that is convenient for scraping off and cleaning adhering overlying material from surfaces.

a. Backhoe

b. Dragline

c. Mining Shovel

d. Stripping Shovel

d

59. The open-pit design technique to be used must be determined. With the establishment of the basic pit design requirement, the geometric configuration of the pit design can be developed:

a. manually

b. with a computer

c. combination of manual and computer techniques

d. all of the above

a

60. In selecting a particular stripping method the ultimate aim is:

a. The removal of waste material at the least possible cost

b. The removal of waste material at any cost

c. The removal of ore material at the least possible cost

d. The removal of ore material at any cost

c

61. Means a portion of the contract area identified by the contractor for purposes of development, mining, utilization and sites for support facilities or in the immediate vicinity of the mining operations.

a. keymens

b. open pit

c. mining area

d. waste dump area

b

62. Means mining activities involving exploration, feasibility, development, utilization and processing.

a. production

b. mining operation

c. valuation

d. none of the above

a

63. A permit specifying the origin and quantity of non-processed mineral ores or minerals shall be required for their transport.

a. Ore Transport Permit

b. Run-of-Mine-Ore Haul Permit

c. Mineral Haul Permit

d. Ore Handling Permit

d

64. Materials whether solid, liquid or both segregated from the ores during concentration/milling operations, which have no present economic value to the generator of the same.

a. Mine Waste

b. Pulp

c. Agglomerated materials

d. Mill Tailings

b

65. A tailings depository facility that may be made of cycloned tailings, zoned or homogenous earthfill, and rockfill.

a. Silt Pond

b. Tailings Impounding Structure

c. Silt Trap

d. Gabion Wall

b

66. The horizontal rock shelf in open pit mining.

a. Berm

b. Bench

c. Crest

d. Mine road

a

67. The ratio between average bench width and bench height. It determines the width of the operating benches.

a. working slope

b. bench

c. road gradient

d. bench elevation

c

68. A measure in percent of volume increase experienced by material when loosened from its in-place position.

a. porosity

b. proctor density

c. swell

d. fillability

a

69. Production methods for surface mining are divided into basic operations of:

a. Drilling, blasting, loading and transporting

b. Development stripping, loading and transporting

c. Initiation of a land reclamation plan, provision of topsoil stripping & waste disposal dumps and carrying out of advanced stripping of overburden.

d. All of the above

b

70. The ratio of the mass of the body to the mass of an equal volume of water at a specified temperature.

a. moisture

b. specific gravity

c. tonnage

d. porosity

d

71. The top edge of a bench in an open pit mine.

a. toe

b. berm

c. bench slope

d. crest

a

72. Amount of vertical rise or fall in 100 ft. of horizontal distance expressed in percent

a. grade

b. slope

c. variance

d. coordinates

c

73. A graduated rule used to measure or plot distances on a map or chart.

a. planimeter

b. pantograph

c. scale

d. coordinates

b

74. It is a special form of weighted moving average interpolation. The method rests on the recognition that the spatial variation of any earth related property is too irregular to be modeled by a smooth mathematical function but can be described better by a stochastic surface.

a. Inverse distance

b. Krigging

c. triangulation

d. polygonal method

a

75. It is a graph of semi-variances calculated for pairs of data separated a particular distance in a specified direction versus that distance.

a. Semi-variogram

b. Variance graph

c. Multi-variance

d. Variable graph

a

76. The sequence of unit operations used to accomplish mine development or exploitation.

a. Cycle of operation

b. Mining sequence

c. Mining plan

d. Development plan

a

77. The second level in engineering evaluation in which the various operational concepts are quantified and compared, resulting in firm designs and costs.

a. Engineering study

b. Detailed design study

c. Conceptual study

d. Long-term plan

c

78. Defined as a methodical and systematic process of combining a variety of materials into a uniform mass. When properly carried out, it can improve the efficiency of processing plant and furnace operations by virtue of optimized & controlled feed, increase mine output and reduce mining costs by minimizing the need for selective mining and increase the ore reserve.

a. Sampling

b. Controlled blasting

c. Blending

d. none of the above

b

79. The volume of overburden which costs a unit amount to move and is accepted as a standard for the mine or district in which it occurs.

a. Recovery

b. Equivalent Yardage

c. Miner's Inch

d. none of the above

d

80. The discharge of tailing slurry from a submerged pipeline into deep ocean water.

a. Pipeline Tailing Disposal

b. Saltwater Tailing Disposal

c. Submerged Tailing Disposal

d. Submarine Tailing Disposal

d

81. The vertical distance from the top of a bench to the floor or to the top of the next lower bench.

a. Crest Height

b. Toe Distance

c. Cap Height

d. Bench Height

c

82. A nearly vertical face at the edge of a bench, bluff, or ledge on a surface excavation.

a. Berm

b. Apex

c. Highwall

d. Façade

b

83. Any building, structure or container, other than an explosives manufacturing building, approved for the storage of explosive materials.

a. Impoundment

b. Magazine

c. Stockyard

d. Highrise

a

84. Worthless material lying on top of a deposit of useful material.

a. Overburden

b. Tailings

c. Gangue

d. Bedded Deposit

b

85. It is dependent on the strip ratio, the concentratibility of the ore, and whether the material must be removed to get out better ore below.

a. Marginal Grade

b. Cut-off Grade

c. Mill Grade

d. Mine Grade

d

86. Valley Dams, Side-Hill Impoundment and ________ are types of impounding structures for tailings in terms of forms.

a. Horst Dike

b. Wedge Dike

c. Circle Dike

d. Ring Dike

a

87. The vertical distance between a specified reservoir water surface and the top of the dam without allowance for camber of the top of the dam.

a. Freeboard

b. Camber Height

c. Spillway

d. Decant

c

88. Pile of broken rock that is the result of a blast.

a. Blast Stock

b. Boulders

c. Muckpile

d. Stockpile

b

89. The working pit slope, usually at a _______ than the final pit slope, should be maintained at the maximum safe angle to increase pit efficiency and lower the operating costs.

a. Higher Angle

b. Lower Angle

c. Equal Angle

d. Equilibrium Angle

a

90. Minimum economic tenor of ore.

a. Cut-off Grade

b. Marginal Grade

c. Mill Grade

d. Mine Grade

d

91. Gradual or sudden failure of the soil mass underlying a bank slope, causing the mass to move outward and downward.

a. Overburden Failure

b. Downslope

c. Creep

d. Slide

a

92. Workhorse of the surface mining industry.

a. Power Shovel

b. Dragline

c. Backhoe

d. Dozer

d

93. Synonymous to truck capacity that is usually measured on a weight rather than volume basis to prevent overloading.

a. Tailgate

b. Drivetrain

c. Dead Load

d. Live Load

c

94. Bench slopes usually are ______ than the pit slope, because rock can maintain a more nearly _______ wall for short heights.

a. moderate ; vertical

b. moderate ; horizontal

c. steeper ; vertical

d. steeper ; horizontal

c

95. During the final mining cycle before abandonment, the pit slope sometimes is _____ to increase recovery.

a. Undermined

b. Mined

c. Steepened

d. Backfilled

a

96. This combination commonly is selected for reasons such as the overburden is rock which breaks into large angular pieces, there is limited access roads & haulage is of medium length and of short, steep grades and extreme flexibility is required.

a. Shovel and Truck

b. Backhoe and Truck

c. Scraper and Truck

d. Loader and Truck

d

97. It refers to the friction of a tire on the surface on which it moves.

a. Drivetrain

b. Inertia

c. Tire Hold

d. Traction

d

98. Mining machines for the continuous bulk excavation of minerals and rock rely for their basic action on _________ into a rock surface.

a. Vibratory Diffusion

b. Cutting Prolixity

c. Vibratory Dispersion

d. Wedge Penetration

b

99. Comparative study of projected tonnage available blocks against actual mine production is employed to determine if there was:

a. Undermining

b. Block Failure

c. Highgrading

d. Overbreak

a

100. The pit design which refers to the fact that to maximize the total net value of the ore body the final pit must be expanded to the point where the economic value of the last cut mined down the final slope approaches zero or break-even.

a. Break-even Pit

b. Break-even Slope

c. Cut-Off Design

d. Cut-Off Slope