Mining methods

C. vertical crater method with LHD

1. What is the current mining method of Lepanto in extracting gold ores from its newly developed Victoria orebody?
A. high capacity shrinkage stoping
B. modernized flat back cut and fill stoping
C. vertical crater method with LHD
D. modified square set stoping
E. mechanized resuing

D. open cut mining

2. Which of the following mining methods is most applicable in mining low grade dessiminated porphyry copper deposits that are shallow occurring?
A. underground cut and fill
B. underground trackless mining using LHD
C. blockcaving
D. open cut mining
E. high capacity sub-level stoping

C. measured ore reserve

3. In valuation of mines and/or mineral properties, which of the following information is most essential?
A. inferred ore reserved D. possible ore reserve
B. geologic ore reserve E. probable ore reserve
C. measured ore reserve

C. wedge

4. In underground timbering, what do you call that small part that is used to tighten spaces between timbers and reduce sliding or movements between timber and tunnel walls?
A. cap D. splice
B. girt E. sill
C. wedge

B. accident severity rate

5. Which of the following refers to the total number of days lost per million man hours worked?
A. total accident rate D. total lost time accident
B. accident severity rate E. accident frequency rate
C. accident prone index

C. all of these

6. Which of the following parameters is/are most important in designing the mining method for a particular ore deposit?
A. price of metal commodity D. tonnage to be mined
B. depth of orebody E. grade of the orebodey
C. all of these

B. all of these

7. What do you call the type of controlled blasting that minimizes damage to the remaining rocks after a blast?
A. smooth blasting D. line blasting
B. all of these E. perimeter blasting
C. cushion blasting

E. small scale mining

8. PD 1899 is a decree promulgated made by then President Ferdinand E. Marcos primarily to promote which of the following?
A. large scale mining
B. national mineral policy
C. none of these
D. foreign investment attraction
E. small scale mining

E. gossan

10. Which of the following indicate a ferrogenous outcrop?
A. horse D. overburden
B. hanging wall E. gossan
C. dike

C. drilling

11. In a mining cycle, which of the following procedures come first?
A. hauling D. crushing
B. loading E. blasting
C. drilling

A. 1.92

12. A copper bearing host rock is blasted and found to exhibit a swell factor of 30%. What is the resulting material density in tons per loose cu.m. (LCM) if the specific gravity is 2.5?
A. 1.92 D. 0.75
B. 2.8 E. 8.33
C. 32.53

D. all of these

13. Which of the following parameters must be considered in evaluating as whether a mineral deposit is feasible to mine or not?
A. cost of establishing and maintaining social acceptability
B. price of metal commodity
C. ore reserves and applicable mining methods
D. all of these
E. environmental effects during and after mining

D. IP or induced polarization

14. Which of the following geophysical methods is sensitive to disseminated mineralization that do not produce resistivity anomaly?
A. seismic
B. telluric
C. electromagnetic
D. IP or induced polarization

C. 4 x 6 inches

15. A hardwood timber is used as post to support an average load of 20,000 pounds, 5 feet high. If the timber has a compressive strength of 900 psi, what would be the typical size of timber support most economical for the purpose?
A. 8 x 6 inches D. 10 x 10 inches
B. 6 x 6 inches E. 12 x 14 inches
C. 4 x 6 inches

C. sample salting

16. It is the act of enriching samples either intentionally or accidentally.
A. assaying D. test pitting
B. high grading E. coning and quartering
C. sample salting

B. Pd 1899

17. Which of the following is also referred to as the Magna Carta for Small Scale Miners?
A. RA 4274 D. RA 1871
B. Pd 1899 E. RA 7942
C. PD 463

C. lode deposit

18. A steeply dipping rod shape mineral deposit is commonly called what?
A. porphyry deposit D. placer deposit
B. seam deposit E. none of these
C. lode deposit

B. breakeven volume

19. It is a volume of production at which total revenues equal total expenditures.
A. maximized capacity
B. breakeven volume
C. overall stripping ratio
D. breakeven stripping ratio
E. tonnage factor

B. frequency rate

20. It refers to the total fatal and non fatal lost time accidents per million manhours.
A. recovery rate D. incidencd rate
B. frequency rate E. severity rate
C. accident rate

B. trackless LHD mining

21. What do you call that new mining method where slushers, chutes and tramways have been eliminated and replaced by more economic and high capacity diesel operated machines?
A. room and pillar D. belt conveyor mining
B. trackless LHD mining E. blockcaving
C. glory hole

B. country rock or host rock

22. The rock formation in which an orebody or mineralization is enclosed is called:
A. quartz vein
B. country rock or host rock
C. andesite
D. bedrock
E. outcrop

B. DAO No. 34, Series of 1992

23. Which of the following rules and regulations implements RA 7076 otherwise known as "People's Small Scale Mining Act of 1991"?
A. DAO No. 1, Series of 1995
B. DAO No. 34, Series of 1992
C. DAO No. 76, Series of 1991
D. DAO No. 66, Series of 1991
E. DAO No. 23, Series of 1991

D. lost time accident

24. If refers to the type of accident that prevents the injured from reporting back to work on the following working day and/or thereafter.
A. accident frequency rate D. lost time accident
B. all of these E. accident severity rate
C. total accident rate

E. silica

25. Aside from limestone, what other raw materials are necessary in the production of cement?
A. diorite D. granite
B. dacite E. silica
C. andesite

C. reusing

26. Philex Mining Corp, is operating a dessiminated porphyry copper deposit at its Padcal Mine since early 1950. The mining method of this mine is:
A. small scale mining D. gophering
B. square set stoping E. blockcaving
C. reusing

C. quarry mining

27. It is a mining method used in the extraction of marble, granite, limestone, slate, etc. which are important because of physical and/or chemical properties.
A. block caving D. placer mining
B. glory holing E. solution mining
C. quarry mining

D. 2.46

28. The feed to the mill is known to contain 10% chalcopyrite. What is the % S content of the ore?
A. 1.49 D. 2.46
B. 8.49 e. 3.49
C. 4.46

B. cable belt conveyor

29. Which of the following mine haulage systems is currently being used by Philex at its Padcal Copper Mine in Benguet?
A. conventional roller type conveyor belt
B. cable belt conveyor
C. mine car tramming
D. glory hole
E. hoisting and skip

B. breast

30. Which of the following refers to the working face of an underground stope?
A. muckpile D. back
B. breast E. crown
C. pit design

A. geologic map

31. A record of geologic facts in their correct space relations is called what?
A. geologic map D. assay map
B. core log E. aerial photograph
C. pit design

C. permissible explosives

32. Which of the following explosives is recommended for blasting in underground coal mines?
A. ammonias dynamite explosives
B. slurry explosives
C. permissible explosives
D. semi-gelatin explosives
E. straight dynamite explosives

E. measured ore reserve

33. In evaluating mineral deposit, positive ore reserves are sometimes referred as what?
A. inferred ore reserve D. probable ore reserve
B. possible ore reserve E. measured ore reserve
C. geologic ore reserve

B. pit limit

34. In open pit mine design, the boundary that supports maximum allowable stripping and still results to an ore grade that guarantees breakeven condition is called:
A. bank slope D. optimum bench height
B. pit limit E. work index
C. pit slope angle

B. combined open pit and blockcaving

35. Atlas Consolidated Mining and Development Corp. in Cebu was once the fifth largest copper mine in the whole world. Which of the following mining methods were used by Atlas in mining its huge dessiminated porphyry copper deposits in Cebu?
A. room and pillar
B. combined open pit and blockcaving
C. small scale mining
D. blockcaving
E. open pit mining

D. non-lost time accident

36. Under the MGB Mine Safety Rules and Regulations, what do you call an accident wherein the injured person is able to report back to work immediately the following day after date of accident?
A. none of these D. non-lost time accident
B. high frequency rate E. high severity rate
C. lost time accident

C. 81 hectares

37. Under PD 463, mining claims were granted thru Mining Lease Contracts (MLC). This was superseded by RA 7942 where the MLC was converted either MPSA or FTAA. Under the new system, how many hectares are converted by one meridional block of an MPSA or FTAA?
A. 101 hectares D. 91 hectares
B. 61 hectares E. 71 hectares
C. 81 hectares

C. mercury

38. Which of the following exhibits an anomalous color of red?
A. copper D. chromite
B. silver E. arsenic
C. mercury

D. cut-off grade

39. The minimum economic grade of a material that can be mined by open pit at specified metal prices and predetermined operating costs is called what?
A. mine head D. cut-off grade
B. mill head E. eyeball grade
C. ore reserve grade

C. sub-level stoping

40. Which of the following underground mining methods is generally applicable to steeply dipping bedded deposits with fairly uniform grade and where the orebodies are mined in slices?
A. shrinkage stoping D. blockcaving
B. glory hole stoping E. LHD stoping
C. sub-level stoping

B. leather tanning agents

42. Which of the following is an economic final product of chemical grade chromite ores?
A. refractory bricks D. ferrochrome alloys
B. leather tanning agents E. foundry castings or dyes
C. all of the above

A. countrydrive

43. In underground development, which of the following is driven purposely to gain access to an area by by-passing certain areas of the mine of existing mine installations?
A. countrydrive D. drift
B. doghole E. tunnel
C. crosscut

D. poisson's ratio

44. One of the elastic properties of rocks is:
A. density D. poisson's ratio
B. porosity E. weight
C. specific gravity

D. 96% AN and 4% FO

45. What is the ideal mix of NFO?
A. 4% AN and 96% FO D. 96% AN and 4% FO
B. 95% AN and 5% FO E. 97% AN and 3% FO
C. 50% AN and 50% FO

C. Mines Administrative Order No. 51

46. Which of the following DEND orders refers to the Revised Mines Safety Rules and Regulations which was renamed "NINE SAFETY AND HEALTH STANDARDS" and signed on December 2000 by the DENR Secretary?
A. DENR Administrative Order No. 57
B. The MGB Green Book
C. Mines Administrative Order No. 51
D. The New Mining Act
E. DENR Administrative Order 2000-98

B. capacitor type exploder

47. What is that type of exploder that has one or more capacitors that are charged from either a dynamo or battery and has a manually rotated armature? It is also suitable for series of firing and, to limited extent, also used in firing series-in-parallel circuits.
A. generator type exploder D. sequential type of exploder
B. capacitor type exploder E. all of these
C. squirrel type of exploder

B. phreatic water

49. In large surface excavations such as open casts or pits, what do you call the water found in the zone of saturation?
A. run-off water D. soil water
B. phreatic water E. moisture
C. capillary water

A. rock bolting

50. It is a type of mine support where the roof, back or walls of affected areas are first drilled and later inserted with bolts or steel cables bolted at the collar of the holes. Sometimes, grouts are used to secure the bolts is place.
A. rock bolting D. cable splicing
B. none of these E. steel arc supports
C. timbering

D. Safety Engineer

51. In small mining companies, which of thefollowing senior officers shall be the Chairman of the Central safety Committee at the mine site?
A. Company doctor
B. Highest official in the mine site
C. Chief of Security
D. Safety Engineer
E. Safety Inspector

D. misfire

52. The failure of an explosives charge to explode when expected is called:
A. hangfire D. misfire
B. explosion E. bootleg

C. conventional conveyor belt system

53. Which of the following is used by Semirara Coal Corp in delivering coal from its bucket-wheel excavators to the pre-blending stockpile in the pier?
A. cable car system
B. aerial tramway system
C. conventional conveyor belt system
D. cable belt system
E. mine car system

B. angle of repose

54. It refers to the maximum slope at which any loose material comes to rest when poured or dumped in a pile.
A. drain angle D. gradient slope
B. angle of repose E. working slope
C. angle of draw

D. detonator

55. It is a capsule containing a very sensitive and powerful explosive used to initiate other explosives.
A. safety fuse D. detonator
B. ammonium nitrate E. none of these
C. black powder

D. core drilling

57. The best and most widely used exploration method in developing an established area of mineralization or anomaly is:
A. geostatistical analysis
B. IP E. geochemistry
C. Geophysics D. Core Drilling

B. Calaca Power Plant, Batangas

59. Coal extracted by Semirara Coal Corp is used to feed which of the following?
A. National Steel Corp., Iligan City
B. Calaca Power Plant, Batangas
C. Phil. Sinter Corp., Misamis Oriental
D. Republic Cement Corp., Bulacan
E. Masinloc Thermal Plant, Zambales

C. blockcaving

62. Which of the following is the mining method currently being used by Philex Mining Corp. in recovering copper ores at its dessiminated porphyry copper Mine in Padcal, Tuba, Benguet?
A. in situ mining
B. placer mining
C. blockcaving
D. combined open pit and blockcaving
E. open pit

A. diamond drilling exploration

63. The most effective, detailed and widely used exploration method in developing or delineating the vertical and lateral extents of mineralizations for the purpose of blocking ore reserves is called what?
A. diamond drilling exploration
B. airborne exploration
C. geophysical exploration
D. geobotany exploration
E. geochemical exploration

D. ore reserves

64. The most important factor to consider in mine valuation is what?
A. Catholic church policies D. ore reserves
B. national politics E. local politics
C. NGOs

D. beds or layers

66. In coal deposition, what does strata mean?
A. country rock D. beds or layers
B. beams or bars E. karst formation
C. host rock

E. P5.0 million or 10% of the approved EPEP, whichever is lower

67. Under RA 7942 and its IRR, how much trust must a proponent deposit in a government depository bank which will be used to defray costs of mine rehabilitation should the proponent fail to comply with the aw regarding the same?
A. P15.0 million or 8% of the approved EPEP, whichever is lower
B. P20.0 million or 1% of the approved EPEP, whichever is lower
C. P10.0 million or 1% of the approved EPEP, whichever is lower
D. The amount equivalent to the excise tax payable on yearly basis
E. P5.0 million or 10% of the approved EPEP, whichever is lower

E. all of these

69. Under RA 7942, which of the following parameters was/were added in the regulation of mineral resources development in the country?
A. social acceptability
B. environmental control
C. multi-partite monitoring of mining operations
D. mine rehabilitation fund
E. all of these

E. water or stream sediment samples

70. Geochemical prospecting is used to trace metals usually contained in?
A. oil samples
B. flora samples
C. waste dump samples
D. wind samples
E. water or stream sediment samples

C. core barrel

74. A cylindrical chamber for receiving and retaining rock samples as diamond drilling progresses at depth is called?
A. drill pipe D. fishing device
B. sample splitter E. core box storage
C. core barrel

A. cobalt

75. Which of the following elements exhibits a combination of pink, violet and black outcrop?
A. cobalt C. manganese
B. zinc D. lead

A. Chemical grade chromite ores

76. Leather tanning agents are just one of the many economic end products of which of the following minerals?
A. Chemical grade chromite ores
B. Refractory grade chromite ores
C. Nickel bearing laterites
D. Metallurgical grade chromite ores
E. None of these

E. resistivity

77. The exploration method highly applicable in locating and determining the thickness of wet shears, clays or gravels is called:
A. magnetic D. telluric
B. gravity E. resistivity
C. polarity

D. portal

78. The surface opening of an underground excavation is called what?
A. shaft D. portal
B. raise E. level
C. adit

D. lost time accident

79. Under the MGB Mine Safety Rules and Regulations what do call the type of accident wherein the injured person is unable to report back to work immediately after the day of accident?
A. non-lost time accident D. lost time accident
B. accident severity rate E. accident risk record
C. accident frequency rate

D. ordinary matches

80. Which of the following is a final end product of chemical grade chromite?
A. Ferromanganese D. ordinary matches
B. None of these E. ferrochrome
C. Ferrosilicon

B. face break

81. In coal mining, which of the following refers to the spalling or collapse of the coal face due to stress concentration at the face caused by goaf hang ups and existence of joints near and parallel to the face?
A. coal bump D. cave-in
B. face break E. face structure
C. heave

D. bench height

83. It is the vertical distance between the top of a bench to the floor.
A. toe line D. bench height
B. cap height E. sub-grade
C. crest line

E. in rock mechanics, the post failure characteristics of rocks are more useful and significant in mining than the pre-failure ones

84. Rock mechanics differs from classical mechanics in terms of?
A. none of these conditions
B. seismic forces are not considered in classical mechanics
C. the strength of rocks compared with steel
D. rock mechanics is applied and appreciated only in mining
E. in rock mechanics, the post failure characteristics of rocks are more useful and significant in mining than the pre-failure ones

B. drain tunnel

85. What is the underground mine working that is generally driven at the lowest possible elevation of a mine where water flows out by gravity. This is also often used as main haulageway.
A. counter drive D. main shaft
B. drain tunnel E. ore pass
C. ventilation tunnel

E. open pit mining

86. Which of the following mining methods is being used by Rio Tuba nickel Mining Corp. in extracting lateritic nickel ores at its nickel mine in Bataraza, Palawan?
A. in-situ nickel leaching
B. none of these
C. combined blockcaving and open pit mining methoc
D. blockcaving method
E. open pit mining

B. upcast

87. It is a vertical opening in a mine where air flows from the underground to the surface due to change in pressure and temperature.
A. intake D. exhaust
B. upcast E. downcast
C. air tunnel

B. winze

88. In underground development, it refers to a vertical or nearly vertical opening driven from a level downwards for the purpose of recovering small portions of ore, sump or temporary storage of muck and other materials.
A. chinaman chute D. portal
B. winze E. orepass
C. counterdrive

D. FEU

89. Which of the following agencies of the Philippine National Police (PNP) is responsible of issuing of Blaster Foeman's licenses and regulations of the sale, inventory and disposal of explosives and explosives ingredients?
A. CAFGU D. FEU
B. NBI E. ISAF
C. SWAT

B. auger method

90. Which of the following refers to the systematic winning of coal by boring or excavating an opening into the coal seam beneath the overburden?
A. hydraulicking D. dredging
B. auger method E. bucket wheel excavator
C. open cast

D. primary blasting

91. Which of the following is not a secondary blasting?
A. plaster shooting D. primary blasting
B. hard toe blasting E. block holing
C. mudcapping

B. 2 years renewable for like periods

92. The term of Small Scale Mining Permits under RA 7076 IS?
A. 25 years renewable for like periods
B. 2 years renewable for like periods
C. 5 years renewable for like periods
D. 10 years renewable for like periods
E. 1 years renewable for like periods

D. block caving

93. Atlas Mining and Development Corp. operated the eight biggest copper mine in the world. It used two mining methods in extracting copper ores at its mine in Cebu. Aside from its two big open pits, what other mining method did Atlas use?
A. small scale mining D. block caving
B. room and pillar E. glory hole
C. heap leaching

E. nickeliferous laterite

94. In the Philippines, nickel is mined commercially from which of the following?
A. ferruginous
B. primary nickel copper sulphides
C. dessiminated porphyry copper
D. epithermal deposits
E. nickeliferous laterite

D. vertical crater cone method with trackless ramps

95. Lepanto Consolidated Mining Co. shifted its operations from copper to gold at its Mankayan Mine in Benguet. It is currently mining a deep seated gold deposit called Victoria orebody. Which of the following underground mining methods is employed by Lepanto in winning gold ores from the said deposit
A. blockcaving with trackless ramps
B. square set stoping
C. shrinkage
D. vertical crater cone method with trackless ramps
E. small scale mining

E. ore

96. Nava is a common local name for what material?
A. back filling D. gob
B. tailings E. ore
C. waste

C. open pit mining

97. The mining method of Maricalum Mining Corp. at its Sipalay Mine in Negros is:
A. dredging
B. vertical crater cone method
C. open pit mining
D. small scale mining
E. underground blockcaving

B. kerogene

99. Which of the following refers to the solid petroleum that occurs as a component of shale?
A. coke D. carbon pigment
B. kerogene E. bitumen
C. coal