Mining 1.1-2

a

The loading point beneath a stope using gravity to move bulk material downward and into a conveyance, by a chute or loading machine.

a. Drawpoint b. Transfer point c. Chute point d. Tram point

a

It is the working face of an opening.

a. Breast b. Inby c. Outby d. Front

a

The broken, caved and mined-out portion of the deposit

a. Gob b. Fragments c. Gangue d. Muck

c

Portion of a deposit overlying an excavation and left in place.

a. Rib pillar b. Sill pillar c. Crown pillar d. Face

b

5. The country rock boundary adjacent to a deposit

a. Rock mass b. Wallrock c. Host rock d. Alteration

a

It is a funnel-shaped excavation formed at the top of a raise to move by gravity from the stope to a drawpoint

a. Bell b. Trench c. Collar d. Ditch

a

. A narrow vertical or inclined opening excavated in a deposit at the end of a stope to provide a bench face.

a. Slot b. Raise c. Chute d. Drawpoint

b

. It is the oldest method of mining both coal and most metallic ores.

a. Longwall mining b. Room-and- pillar c. Sublevel caving d Block caving

b

9. A smooth blasting method in which cracks for the final contour are created by blasting prior to the drilling of the rest of the holes for the blast pattern.

a. Perimeter blasting b. Pre-splitting c. Smooth blasting d. secondary blasting

c

A method for mining weak veins and uses a great deal of timbers. The whole width of the vein is mined in horizontal slices from the top. The timber sets are blasted down after each slice is completed before the next slice is started.

a. Sublevel stope b. Sublevel caving c. Top slicing d. Square set

c

It is a timbered stope but classified as a self-supporting opening because the timbers are not used as support but to provide working platforms for miners. The method is applicable to very narrow veins so that the timbers to be used are normally 5 -6 ft.

a. Longwall mining b. Square set c. Stull stope d. Top slicing

d

A method of caving that utilizes the weight of an ore column that is being caved to crush itself into sizes small enough to pass through drawpoints that have been prepared beforehand.

a. Sublevel caving b. Top slicing c. Longwall mining d. Block caving

a

13. It is a vertical, overhand mining method used in wide or narrow vein deposits with steep plunge. The ore must be firm and competent and the foot wall and hanging wall must be strong enough to stand with only minimal ground support.

a. Shrinkage stoping b. Open pit c. Rill mining d. Resuing mining

d

It is generally used in steeply dipping narrow and wide veins and bedded deposits with a fairly uniform grade distribution and with competent ore and country rock, that both require little or no support.

a. Block caving b. Open pit c. Rill mining d. Sublevel stoping

c

It is a secondary or tertiary inclined opening, driven to connect levels, usually the downward directions, and used for haulage.

a. portal b. Level c. Ramp d. Tunnel e. Room

e

Horizontal exploitation opening several hundred feet (meter) in length, usually in a tabular deposit.

a. Tunnel b. Manway c. Room d Haulageway e. Longwall

a

Secondary or intermediate level between main levels or horizons, usually close to the exploitation area.

a. Sublevel b. Undercut c. Slot d Orepass e. Transfer point

d

The pattern in which multiple faces are advanced when driving entries or rooms is called:

a. Drilling pattern d. Cut sequence

b. Blasting pattern e. Echelon sequence

c. Drilling and blasting pattern

b

A production cycle is composed of the following (room and pillar):

a. drill + blast + load + haul

b. cut + drill + blast + load + haul

c. blast + cut + load + haul

d drill + load + cut + haul

e. cut + load + drill + haul + blast

d

A system of bearing down coal by which compressed air, generated locally by a portable compressor at 10,000 psi, is used in releasing cylinder, which is placed in a hole drilled in the coal.

a. Hydrox b. Clorox c. Cardox d. Airdox

c

Room and pillar method is used predominantly in:

a. Metallics d. Aggregates

b. Non-metallics e. Conglomerates

c. Coal mining

a

In shrinkage stoping, the ore strength and the rock strength should be:

a. Strong b. Weak c. Intermediate d. Very strong e. Very weak

b

In shrinkage stoping, the ore depth should be:

a. Moderate d Very shallow

b. Shallow to moderate e. Very deep

c. Deep

a

It is an overhand, vertical stoping method utilizing longhole drilling and blasting carried out from the sublevel to break the ore.

a. Sublevel stoping. d. Sublevel caving

b. Squire set stoping e. Shrinkage stoping

c

. In a cut and fill mining methods, possible recovery of ore ranges from:

a. 60% -80% b. 80% -100% c. 90% -100% d 50% -80% e. 40% -50%

e

In a cut and fill method, dilution is kept at:

a. 20% b. 30% c. 15% d. 12% e. 5- 10%

a

In __________, overall mining progresses downward while the ore between sublevels is broken overhand; the overlying waste rock caves into void created as the ore is drown off.

a. Sublevel caving b. Stull stoping c. Longwall d. Top slicing e. Block caving

d

Sublevel block caving is a hybrid between sublevel caving and block caving introduced to counter:

a. Drilling and blasting problems in sublevel caving.

b. Draw control problems in block caving.

c. Problems in sublevel caving due to dilution and mining at depth.

d. Problems in block caving regarding stability, reinforcement and secondary blasting problems.

c

The sublevel shrinkage method is a variant of sublevel caving and shrinkage stoping to develop to reduce:

a. Drawbacks due to mechanization of operation.

b. Drawbacks due to mining at depth.

c. Drawbacks in sublevel caving such as stability problem as mining goes deeper and minimizing dilution.

d Drawbacks in shrinkage stoping such as dilution.

a

Sublevel caving layout depends primarily on the size and shape of the orebody, for steeply dipping and narrow orebodies, the appropriate layout is:

a. Longitudinal layout c. Cross-section layout

b. Perpendicular layout d Traverse layout

c

Sublevel caving method is applicable to:

a. Competent orebody characteristic enclosed by strong wall rocks

b. Weak orebody and wall rock characteristics

c. Reasonably competent orebody characteristics enclosed by incompetent wall rocks.

d. Strong orebody and wall rock characteristics.

d

The optimum yield from the orebody in sublevel caving depends on:

a. The drilling and blasting technique

b. Attitude of the orebody

c. The country rock overlying the orebody

d. The gravitational flow of the granular material produced by blasting and the caving waste rock.

b

Sublevel caving is a method that:

a. Is applicable to a tabular orebody with 3 meters height

b. Involves the formation of the in-situ ore into a mechanically mobile state by drilling and blasting, and subsequently recovered.

c. Is applicable to low plunging vein type deposit

d. Rely on the caving of the ore.

d

34. Sublevel caving method remains to be called so due to the fact that

a. The characteristic of the ore and country rocks have high cavability index.

b. The ore and country rock caves.

c. The ore caves.

d. The country rock. (hanging wall and foot wall) caves

b

Sublevel caving and block caving are methods that are:

a. Naturally supported b. Unsupported c. Artificially supported d. None of these

c

Cut and fill stoping, VCR stoping and longwall mining are methods that are:

a. Naturally supported b. Unsupported c. Artificially supported d. None of these

a

Room and pillar mining, sublevel stoping and longhole open stoping methods are mining methods that are:

a. Naturally supported b. Unsupported c. Artificially supported d. None of these

a

A mechanized cut and fill stoping

a Cut-and-fill stoping with LHD b. Horizontal cut-and-fill stoping c. Rill stoping d. Resuing

a

Shrinkage stoping requires that the ore should be strong and wall rock should be:

a. Strong b. Very weak c. Moderately weak d. Weak

b

A post (timber) used to support loose rocks, slabs in the roof in coal mining:

a. Muck b. Prop c. Pillar d Pack

d

A system of Coal mining using continuous miners and hydraulic roof support:

a. Strip mining b. Room and pillar c. Shortwall d. Longwall

d

Dilution is kept to the minimum in resuing mining due to:

a. Systematic backfilling technique

b. Careful drilling blasting procedure

c. The use of normal size mechanized equipment

d. Separate double blasting or selective operation, blasting the ore before blasting the wall to serve as fill material

a

The wall rock strength of cut and fill stoping must be:

a. Weak to fairly weak

b. Fairly strong to strong

c. Moderate to fairly strong

d. Strong

a

In sublevel stoping the orebody must be:

a. Fairly strong to strong d. Weak to fairly weak

b. Cut and fill e. Longwall mining

c. Moderate to strong

c

It is usually a caving process but it is not classified as a caving method

a. Sublevel caving b. Top slicing c. Longwall mining d. Block caving

a

The costliest method in underground mining.

a Square-set stoping b. Room and pillar c. Cut and fill stoping d. Shrinkage stoping

c

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

A vertical or inclined opening driven upward from level to the upper level.

a. Raise b. shaft c. Shoot d. Level

b

Sinking a number of boreholes each in different horizontal or vertical direction from a single drill set-up.

a. Auger drilling b. Fan drilling c. Diamond drilling d. Deep well drilling

c

Mine opening over haulage level through which ore from the stope above is drawn to the waiting trucks as planks are removed.

a Ramp b. Ore pass c. Chinaman's chute d. Drift

Mining1.2

Mining1.2

c

Under the mines Safety Rules and Regulations, what is the Classifications of mines that employ not less than 150 and 250 employees in the underground and surface respectively?

A. Class B Mines B. Class C Mines C. Class A Mines D. Class E Mines E. Class D Mines

d

It is referred to as an injury that will not prevent the injured person from reporting to work on the day following the day of injury.

A. hazard B. Incident C. risk D. first aid case E. peril

a

What disease results from excessive inhalation of asbestos?

A. asbestosis B. silicosis C. AIDS D. salivation E. anthracosis

d

It refers to the total fatal and non-fatal lost time accidents per million man hours worked.

A. Total accident rate D. accident frequency rate

B. Accident prone rate E. total lost time accident

C. Accident severity rate

c

In mine ventilation, what do you call the artificial doors that are installed purposely to divert the flow of fresh air into the underground workings?

A. Sliding doors B. Bulkheads C. Brattices D. automatic doors E. chute covers

a

This is produced by fires or explosions of gas or dust where carbon dioxide is an important constituent:

A. black damp B. fire damp C. stink damp D. white damp

d. stink damp

In mine ventilation, hydrogen sulfide is more commonly known as:

A. black damp B. fire damp C. after damp D. stink damp E. white damp

b

In underground mine workings, the volume of air needed is governed by the following parameters:

A. Dilution and extraction of exhaust fumes

B. All or any of these

C. Removal of smoke and gasses

D. Ventilation and cooling of underground workings

E. Biological need of miners and other underground workers

b

The total surface area around an airway is called?

A. air plane B. regulator C. air blast area D. rubbing surface E. surface plane

d

. It refers to the total fatal and non-fatal lost time accidents per million man-hours.

A. recovery rate B. frequency rate C. accident rate D. frequency rate E. severity rate

d

It 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 B. all of these C. total accident rate D. lost time accident E. accident severity rate

d

Under the MBG 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 B. High frequency rate C. Lost time accident D. Non-lost time accident E. High severity rate

e

Which of the following refers to the total number of lost time incidents per million man-hours worked?

A. Severity rate B. all of these C. frequency rate D. accident rate E. incident rate

b

In all mining companies, which of the following senior officers shall be Chairman of the Central Safety Committee at the mine site?

A. Company doctor D. Safety Engineer

B. Highest Official in the mine site E. Safety Inspector

C. Chief of Security

b

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 B. upcast C. air tunnel D. exhaust E. downcast

c

What is the type of ventilation in which density change in air column causes alteration in natural draft pressure resulting to unpredictable air volume flow?

A. fan ventilation B. mechanical ventilation C. natural ventilation D. bagging E. rock dusting

e

In mine ventilation, the most important factor to consider in designing air fans is what?

A. number of miners infected with communicable diseases

B. power source

C. availability of medicines and first aid kits underground

D. nature of mineralization

E. volume of air required to sustain air requirements of all miners working underground

a

It consists of several overlapping strips of non-flammable brattice cloth, hung from the roof and often replaces doors or entries to coal mines:

A. curtain B. air lock C. wind tunnel D. downcasts E. air crossing

a

.It is vertical opening in underground mines where air is injected downwards.

A. down cast B. shaft C. portal D. upcast E. exhaust

e

Class A mines shall have at least which of the following?

A. 1 safety director is more than enough

B. 1 part time safety inspector and a deputy inspector

C. 1 part time safety engineer and 1 full time safety inspector

D. 1 full time safety inspector only

E. 1 full time safety engineer and 1 full time safety inspector

a

What method of ventilation uses fans, vents, tubings and baggings?

A. mechanical ventilation D. air/water hammer

B. upcast/downcast E. electrostatic precipitation

C. natural draft

b

It is a lost time accident that results to death of the victim.

A. LT accident D. dishonorable discharge

B. fatal LT accident E. indefinite sick leave

C. non-fatal LT accident

a

A class C mine must have at least which of the following?

A. 1 part time safety engineer and 1 full time safety inspector

B. 2 full time safety directors

C. 1 full time safety inspector

D. 1 part time safety inspector and a deputy inspector

E. 1 full time safety engineer and 1 full time safety inspector

b

Which of the following mine classifications has the most number of workers?

A. Class B mines B. Class A mines C. Class D mines D. none of these E. Class C mines

e

What explosive are permitted in gassy or dusty atmospheres?

A. H D explosives B. commercial dynamites C. ammonia dynamite D. ANFO E. permissible explosives

b

In mine ventilation, "natural draft" is commonly known as:

A. air pressure B. natural ventilation C. wind pocket D. wind drainage E. artificial ventilation

c

It refers to the total number of days lost due to accidents per million man-hours.

A. recovery rate B. frequency rate C. severity rate D. incidence rate E. accident rate

d

It is referred to as an injury that does not prevent the injured person from reporting to work on the day following the day of injury.

A. lost time accident B. risk C. hazard D. first aid case E. incident

a

A company may designate a Deputy Safety Inspector from any of its employees who have the following minimum years of experience in safety work or mining operations.

A. 10 years B. 1 year C. 15 years D. 5-10 years E. 20 years

b

The air reticulation system of an underground mine has the following daily compressed air data for its pneumatic equipment:

Tank 1 12,000 cu.m 60 psi

Tank 2 10,000 cu.m 50 psi

Tank 3 15,000 cu.m 70 psi

Tank 4 15,000 cu.m 77 psi

Tank 5 10,000 cu.m 75 psi

What average pneumatic pressure is available assuming there are no leaks along the full length of the underground pipe lines? Express your answer in the nearest rounded bars pressure.

A. 7 bars pressure B. 5 bars pressure C. 6 bars pressure D. 8 bars pressure E. 4 bars pressure

d

What do you call the pressure wave that is transmitted through the air in an explosion?

A. sound wave B. detonation pressure C. shock wave D. airblast E. none of these

c

In underground mine safety, what do you call the structural failure where a rock mass breaks due to its own weight and falls due to gravity and not due to induced stresses?

A. beam collapse B. bending failure C. roof fall D. roof sag E. heave

d

Class B mines shall have at least which of the following?

A. 1 part time safety engineer and 1 full time safety inspector

B. 1 full time safety directors only

C. 1 part time safety inspector and a deputy inspector

D. 1 part time safety engineer and 1 full time safety inspector

E. 1 full time safety inspector only

e

Which of the following refers to an underground mine opening where fresh air is injected with the aid of mechanical means such as ventilation blowers or fans?

A, upcast B. shaft C. venture D. air tunnel E. down cast

d

It is and opening from the underground where air and various gasses or dusts are withdrawn from the mine to the surface:

A. downcast B. portal C. entry D. exhaust E. Shaft

a

In mine ventilation, the most commonly monitored or measured aspect of mine air in the underground is:

A. air velocity B. air humidity C. air temperature D. air odor E. air pressure

d

37. The violent collapse of coal goafs which compress the cavity underneath the main roof will result in which of the following phenomenon?

A. settlement B. gas burst C. roof accident D. air blast E. coal bump

b

It is an existing or potential condition, whether produced or inherent, that can result in an accident or incident that may interrupt or interfere with the orderly process of an activity.

A, injury B. hazard C. risk D. incident

a

39. Which of the following is the most important parameter in designing the ventilation system of any underground mine?

A. volume of air required to sustain fresh air requirements of all miners working underground at any one time

B. source and availability of power

C. availability of breathing apparatus and rescue equipment underground

D. number of miners to be isolated due to diseases

E. nature of mineralization and extent exudation

d

An ideal mine rescue team has how many members including the captain?

A. 12 B. 9 C. 10 D. 5 E. 3

b

Which of the following refers to the total numbers of days lost per million man-hours worked?

A. total accident rate B. accident severity rate D. accident frequency rate E. accident prone index

a

It is referred to as the change in loss?

A. risk B. incident C. injury D. accident

b

It is an undesired event that could result in loss or delays in the operation.

A. hazard B. incident C. injury D. accident

c

The total surface area around an airway is called:

A. regulator B. surface plane C. rubbing surface D. air plane E. air blast area

c

In mine ventilation, hydrogen sulfide is more commonly known as:

A. after damp B. black damp C. stink damp D. fire damp E. humid damp

c

Hydrogen sulfide is also called as:

A. fire damp B. black damp C. stink damp D. after damp

b

It refers to the gaseous product of mine fires or an explosion of coal dust which contains mainly of CO, CO2, water vapor, oxygen, hydrogen and hydrocarbons.

A. black damp B. after damp C. fire damp D. waste dump E. smoke

c

Which of the following refers to the fire safety code of the Philippines?

A. PD 7076 B. PD 1561 C. PD 1185 D. RA 4274 E. PD 1899

c

In mine safety, which of the following refers to an accident where the injured is able to report to work on the next day following the accident?

A. lost time accident B. frequency accident C. non-lost time accident D. accident index E. severity accident.