MINING ENGINEERING I

Tunnel

Which of the following refers to a horizontal or nearly horizontal underground passage that is open to the surface on both ends?

Brazilian disc test

Indirect tensile strength is also called what?

Brattices

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

detonating cord

It is a round and flexible cord whose central core is composed of high explosives and is used to initiate an explosives charge.

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

Rock mechanics differs from classical mechanics in:

18

What is the minimum age requirement for underground mine workers?

ore reserves and applicable mining method

Which of the following valuation parameters is necessary in evaluating whether a mineral deposit is feasible to develop or not

sludge samples

In diamond drilling, the very fine and slimey samples collected are called what?

social acceptability

Under RA 7942, which of the following parameters was/were added in then regulation of mineral resources development in the country?

discontinuity

A word commonly used in rock mechanics as collective term for all fractures or features in a rock mass such as joints, faults, shears, etc. that have zero or relatively low tensile strengths is called:

determine the total mineable reserves, ore grade and stripping ratio that result to the highest net present value of the deposit

In planning and designing open pit mines, the need to optimi8ze the pit limits is for which of the following objectives and purposes?

lode deposit

Which of the following commonly refers to a steeply dipping rod shaped mineral deposit

Davao

The famous Diwalwal gold rush area is located in what licality?

BTU content

Which of the following parameters reflects or measures the quality of coal?

silicosis

In mine sanitation, the disease that results from excessive inhalation of silica dust is called:

gossan

Ferrogenous outcrops are usually indicated by which of the following?

zero

The strength of a fractured mass is:

water or stream sediment samples

Geochemical prospecting is used to treat metals usually contained in?

resistivity

Which of the following methods is most applicable in mapping or locating wet shears, clays o gravel deposits and in determining their thicknesses?

tonnage of ore to be hoisted at any given period

Which of the following parameters is the most important parameter to consider in designing shafts for ore hoisting?

silica

Aside from limestone, what other raw materials are necessary in the production of cement?

overhand

In interpreting topomaps, overlapping topographic contours represent which of the following surface formation?

flyrock

In quarry blasting, what do you call a piece of rock that has been thrown to an excessive distance from the blast site?

pillar

Which of the following refers to a natural post left behind for the purpose of providing supports between two or more underground headings or stopes?

after damp

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

2 years renewable for like periods

The term of small scale permit under RA 7076 is?

channel sampling

Which of the following hand sampling procedures is the MOST accurate or results to the smallest possible error?

all of these

Which of the following parameters must be considered in evaluating as whether a mineral deposit is feasible to mine or not?

rehabilitation

Which of the following stages of mineral resource development comes last?

Adit

In underground mine development, a horizontal passage driven to gain access from the surface to an orebody is called?

nitroglycerine

An explosive made by mixing sulfuric acid, nitric acid and gelatin is called:

portal

Which of the following refers to a surface opening of an underground excavation?

core

It consists of one or more pieces or rocks, usually between 1 to 3 meters long, and taken from a particular depth thru diamond drilling.

wetted with clean water

For accurate logging of diamond dill cores, the core must first be:

clay

Which of the following natural materials posses excellent plastic properties?

25 years renewable for like periods

The tem duration of Mineral Production Sharing Agreement (MPSA) under the New Mining Act of 1995 is how long?

gossan

Which of the following refers to a ferrogenous outcrop?

Angle of repost

What do you call the maximum slope at which a heap of any loose material stands without sliding when dumped in a pile?

accident severity ate

Which of the following refers to the total number of days lost per million manhours worked?

1 full time safety engineer and 1 full time safety inspector

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

oxidizer

What do you call an explosive component that is used to provide oxygen in detonation?

vertical crater cone method with trackless ramps

Lepanto Consolidated Mining Co. shifted its operation from copper to gold at it Mankayan nin Benguet. It is currently mining ad deep seated gold deposit called Victoria. The underground mining method that Lepanto is using in winning gold ore at the Victoria Mine is: CUT-AND-FILL

face break

In coal mine, it refers to the sudden 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>

4 x 6 inches

A typical Benguet pine wood is used as post of a drift set carrying heavy loose ground of 20,000 pounds five feet high. If the pine timber has a comprehensive strength of 900 psi, what would be the ideal size of pine timber support moist economical for the purpose?

chemical grade chromite

Ordinary matches are final products of which of the following?

determine the mineable reserves, ore grade and waste to ore ratio

In open pit, mine planning and optimization, the optimum limits of an open pit must be established in order to:

sluicing

It is a recovery process of recovering gold which involves the washing of gravel through a sluice box.

track ties

In a conventional mine haulage using mine cars and locomotives, what do you call the timber materials that are used as footings of mine rails and at the same time serve as spreaders for consistent spacing of mine rails?

burn cut

A drill patter (round) used in underground headings with no available free face is called:

tunnel

It refers to a horizontal or nearly horizontal underground passage that is open to the surface on both ends.

7 units

A jine shaft which originally contains 400,00 cu.m. of water receives a daily influx of 5,000 cu.m. The shaft must be dewatered in 60 days by pumping 20 hours per day. Being the Mine Superintendent, how many pumps will you install if the capacity of each pump is 1,000 gallons per minute and running at an efficiency of 60%? Allow additional standby pumps of two (2a) units. Assume that there are 264 gallons per cu.m.

Rock bolting

It is a type of mine support where the roof, back or walls 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 in place.

Modulus of elasticity

In rock mechanics, the ratio of the tress of the strain is called?

permissible explosive

When blasting in underground coal mines, which of the following explosives is recommended?

orebodies with regular and well defined shapes

Sub-level stoping is most applicable to which of the following orebodies?

nickeliferous laterite deposits

In the Philippines, nickel is mined commercially from which of the following?

Sedimentary rocks

Limestone formations, whether folded or heavily faulted are what type of rocks?

frequency rate

It refers to the total fatal and non-fatal most time accidents per million manhours.

square set stoping

Small blocks of ore are systematically extracted and replaced by prismatic skeletons of timber sets, framed into an integrated support structure and backfilled floor by floor. It can be operated overhand, underhand or breast and applicable in any shape of orebody.

blending

It refers to the systematic and methodical process of combining two or more materials of variable specifications to produce a uniform mass of desired quality or parameters, more or less:

chorox

Which of the following terms is not related to blasting?

silicosis

The most common diseases encountered by miners in underground metal mines is:

Kerogene

What is the solid petroleum that occurs as a component of shale?

brattice

Artificial doors used in the underground to direct flow of fresh air.

Open pit mining

What is the mining method being used by Rio Tube Nickel Mining Corp. in extracting lateritic nickel ores at Palawan Mine?

Small scale mining

It refers to any mining operations that are artisinal in nature, surface or shallow underground and without using any sophisticated mining methods and equipment.

5 hectares

What is the maximum area of a small scale mining permit that the Local Govenrment can grant?

Iron deposits

Aerial magnetometer surveys are best applicable in prospecting which of the following mineral deposits?

chemical grade chromite

Paint pigments are end products of which of the following?

cribbing

Which of the following underground mining methods is most applicable in diving raises or ore passes through very loose ground?

relatively incompetent orebodies

Block caving mining method is generally used in which of the following?

open pit mining

What is the most dominant and most common mining method worldwide which is applicable to shallow seated low grade ore deposits?

drain tunnel

What do you call an underground mine working that is usually driven at the lowest possible elevation of the mine where water flows out of the mine by gravity and is often used as haulge way?

risk

It is referred to as the change in loss?

20 hectares

Under the New Mining Code, what is the maximum area covered by a small scale mining permit?

lode deposit

A steepy deeping rod shaped mineral deposit is commonly referred to as:

incident

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

strip ratio

In open pit mine planning, which of the following refers to the tonnage of waste needed to be stripped to expose a ton of ore?

Bench slope

In open pit mine planning, the line that defines the area in which mining can be conducted to obtain the maximum cashflow in the earliest possible time is called what?

drainage systems and tributaries

Initial reconnaissance exploration is usually conducted on:

23.27%

The mine delivery of Pascal's blockcave mine assayed 12% chalcopyrite, 16% chalcocite, 10% bornite and 6% pyrite. What is the total % copper content of the mill feed?

box cut

In open pit development, the initial entry into an open pit involving the cutting of a wedge shaped prism of rock or soil in ode to establish the first bench face is called:

stability problems in sub-level caving as mining goes

The sub-level caving method is a combination of sub-level caving and shrinkage stoping developed purposely to reduce which of the following?

poisson's ratio

One of the elastic properties of rock is:

detonator

It is a capsule containing a very sensitive and powerful explosive used to initiate other explosives.

brattices

In underground mine ventilation, which of the following refers to the artificial doors installed purposely to divert the flow of fresh air into the underground workings?

non-lost time accident

nder 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?

1.23:1

The chromite concentrate exports of Heritage Resources and Mining Corporation to China in 2005 was known to contain 48% Cr2O3 and 25% magnetite. What is the calculated Cr:Fe ratio of the concentrate exports?

Phreatic water

In open pit blasting, water in the drill holes always pose problems. This water, which exist in the saturated portion of the drill hole, must be pumped out in order not to dissolve the ANFO which is highly water soluble. This water is technically called?

7 units

As the Mine Superintendent of a newly rehabilitated pre-war underground gold mine, you are tasked to dewater a mine shaft in 60 days by pumping 20 hours per day. The mine shaft originally contains 400,000 cu.m. of water and receives a daily influx of 5,000 cu.m.. how many pumps will you install if the capacity of each pump is 1,000 gallons per minute and pumping at an efficiency of 60%? Allow additional standby pumps of two (2) units. Assume that there are 264 gallons per cu.m.

discontinuity

A word commonly used in rock mechanics as a collective term for all fractures or features in a rock mass such as joints, faults, shears, etc. that have zero or relatively low tensile strengths is called?

1 part time safety engineer and 1 full time safety inspector

decline

In trackless underground mining, it is referred to as an underground opening that is driven downward from surface towards the orebody and used as main access nor haulways.

tunnel

It refers to a horizontal or nearly horizontal underground passage that is open to the surface on both ends.

Small Scale Miners

Which of the following stakeholders refers to Filipino citizens who, individually or in a group, voluntary form mining cooperatives and duly licensed by the DENR to engage in the extraction of minerals from the ground?

crown pillar

Which of the following refers to that portion of an orebody that is left in place above an excavation?

gossan

Which of the following indicate a ferrogenous outcrop?