Before Midterm

Question 1

A natural aggregate of one or more solid minerals which can be mined, or from which one or more mineral products can be extracted, at a profit

Answer 1

ORE

Question 2

What is revenues minus costs?

Answer 2

PROFITS

Question 3

This is the trial operation of the individual components to integrate them into an operating system
and ensure their readiness for startup.

Answer 3

COMMISSIONING

Question 4

A stage in production phase which commences at the moment that feed is delivered to the plant
with the express intention of transforming it into product and normally ends when the quantity and quality of the product is sustainable at the desired level.

Answer 4

STARTUP

Question 5

A stage of study in planning phase that provides a definitive technical, environmental and commercial base for an investment decision.

Answer 5

FEASIBILITY STUDY

Question 6

In reclamation, what do you call the process when the final landform is achieved, the surface shall
be stabilized by plants or other means as soon as practical to reduce further soil erosion from wind or water, provide forage and cover, and reduce visual impacts?

Answer 6

REVEGETATION

Question 7

This refers to expenditures and expenses directly incurred in all activities preparatory to and in the
actual extraction of the ore from the earth and transporting it to the mill plant for mineral processing.

Answer 7

DIRECT MINING COSTS

Question 8

This refers to the document issued by DENR Secretary or RED certifying that the proposed project or undertaking will not cause a significant negative environmental impact; that the proponent has
complied with all the requirements of the EIA System.

Answer 8

ENVIRONMENTAL COMPLIANCE
CERTIFICATE

Question 9

This means searching or prospecting for mineral resources by geological, geochemical, geophysical surveys, drilling and others for the purpose of determining their existence, extent, quality and quantity and the feasibility of mining them for profit.

Answer 9

EXPLORATION

Question 10

In planning phase of mine design process, at what stage is when the development period and overall schedule is estimated, and the mine life is determined but not yet known?

Answer 10

PRE-FEASIBILITY STAGE

Question 11

In planning phase of mine design process, at what stage is detailed analysis and determinations of
ore reserve including dilution and losses fall under?

Answer 11

FEASIBILITY STAGE

Question 12

True or False: The infrastructure requirements for mining projects are not site specific.

Answer 12

False, it is site specific.

Question 13

True or False: The capital cost for infrastructure can vary substantially from site to site as a percentage of the total capital cost and are often more of a function of the location rather than the mining or processing methods.

Answer 13

True

Question 14

What refers to the people living at the barangay/s outside the mine camp, where the mining project
is located?

Answer 14

Host Community

Question 15

What refers to a designated place where the mine wastes are accumulated or collected?

Answer 15

WASTE DUMP

Question 16

This refers to the facility developed even before at the start of the operation for the purpose of
getting initial entry to the prospected site of mineralization.

Answer 16

ACCESS ROADS

Question 17

A principle in PMRC which requires that the Public Report be based on work that is the responsibility of suitably qualified and experienced persons who are subject to an enforceable professional code of ethics.

Answer 17

COMPETENCE

Question 18

What do you call the linear estimation method that develops optimal weights to be applied to each sample in the vicinity of the block being estimated. It uses both the position of the samples with
respect to the block and the continuity of mineralization in different directions as portrayed by selected variogram models.

Answer 18

KRIGING

Question 19

This is the economically mineable part of an Indicated, and in some circumstances, a Measured
Mineral Resource.

Answer 19

PROBABLE MINERAL RESERVE

Question 20

This is the value used to convert the volume of an ore to its equivalent weight expressed as the
density (short ton per cubic feet or metric ton per cubic meter) or specific gravity of the substance.

Answer 20

TONNAGE FACTOR

Question 21

These are the considerations used to convert Mineral Resources to Mineral Reserves. These
include, but are not restricted to, mining, processing, metallurgical, infrastructure, economic,
marketing, legal, environmental, social, and governmental factors.

Answer 21

MODIFYING FACTORS

Question 22

The sequence of unit operations used to accomplish mine development or exploitation that is repeated over and over to produce the mineral commodity is called?

Answer 22

CYCLE OF OPERATIONS

Question 23

A factor that affects the selection of equipment that is related to machine productivity and
include cycle speed, available breakout force, digging range, bucket capacity, travel speed, and
reliability.

Answer 23

PERFORMANCE FACTORS

Question 24

A factor that affects the selection of equipment that is related to the service and maintenance aspects of machine operation.

Answer 24

SUPPORT FACTORS

Question 25

An open pit loading equipment that has an excellent mobility, very versatile, low capital cost and can operate on moderate grades. However, it is unsuitable for hard and dense rocks, high tire and operating costs and has a short lifetime.

Answer 25

FRONT-END LOADER

Question 26

The first is the time needed for the truck to maneuver into position for loading and second one is the time required for the loading machine to make the number of passes required to load the truck.

Answer 26

SPOT TIME AND LOAD TIME

Question 27

The method is based on area of influence. The area of influence is determined by constructing polygonal blocks around each hole that extends half the distance between two holes. The average grade and thickness of the hole inside the polygon is assigned to the entire polygon in order to provide a volume for the reserve estimate. The volume is computed by multiplying the area of polygons with thickness. Volume is multiplied with specific gravity to get tonnage. Summation of all polygon will get tonnage and metal content of total deposit. Polygonal method is used for tabular and large lenses ore bodies.

Answer 27

Polygon Method of Reserve Estimation

Question 28

A design and financial/economic study of an existing operation in which appropriate assessments have been made of existing geological, mining, metallurgical, economic, marketing, legal, environmental, social, governmental, engineering, operational, and all other Modifying Factors, which are considered in sufficient detail (to Pre-Feasibility level) to demonstrate that continued extraction is reasonably justified.

Answer 28

Life-of-Mine Plan

Question 29

Combines the notion of proximity with that of gradual change of the trend surface. It relies on the assumption that the value at an unsampled location is a distance-weighted average of the values from surrounding data points, within a specified window. The points closest to the prediction location are assumed to have greater influence on the predicted value than those further away, such that the weight attached to each point is an inverse function of its distance from the target location.

Answer 29

Inverse Distance Weighting

Question 30

A concentration or occurrence of material of intrinsic economic interest in or on the Earth’s crust in such form, quality and quantity that there are reasonable prospects for eventual economic extraction. The location, quantity, grade, geological characteristics and continuity of a Mineral Resource are known, estimated or interpreted from specific geological evidence, sampling and knowledge. Mineral Resources are subdivided, in order of increasing geological confidence, into Inferred, Indicated and Measured categories.

Answer 30

Mineral Resource

Question 31

the economically mineable part of a Measured and/or Indicated Mineral Resource. It includes diluting materials and allowances for losses, which may occur when the material is mined. Appropriate assessments to a minimum of a pre- feasibility study have been carried out, and include consideration of, and modification by, realistically assumed mining, metallurgical, economic, marketing, legal, environmental, social and governmental factors. In the case of integrated mining operations, the pre-feasibility study will have determined an ore treatment plan that is technically and commercially viable and from which the mineral recovery factors are estimated. These assessments demonstrate at the time of reporting that extraction could reasonably be justified. Ore Reserves are sub-divided in order of increasing confidence into Probable Ore Reserves, and Proved Ore Reserves.

Answer 31

Mineral Reserve

Question 32

The lowest grade, or quality, of mineralized material that qualifies as economically mineable and available in a given mineral deposit. May be defined on the basis of economic evaluation, or on physical or chemical attributes that define an acceptable product.

Answer 32

Cut-off grade

Question 33

Any physical or chemical measurement of the characteristics of the material of interest in samples or product. The units of measurement should be stated when figures are reported.

Answer 33

Grade

Question 34

Physical and/or chemical separation of constituents of interest from a larger mass of material. Methods employed to prepare a final marketable product from material as mined. Examples include screening, flotation, magnetic separation, leaching, washing, roasting, gravity concentration, smelting and refining, etc.

Answer 34

Metallurgy

Question 35

Any single mineral or combination of minerals occurring in a mass, or mineral deposit, of economic interest. The term is intended to cover all forms in which mineralization might occur, whether by class of mineral deposit, mode of occurrence, genesis or composition.

Answer 35

Mineralization

Question 36

All activities related to extraction of metals, minerals, and gemstones from the earth whether surface or underground, and by any method (e.g., quarries, open cast, open cut, solution mining, dredging etc.).

Answer 36

Mining

Question 37

Represents the highest confidence category of Mineral Reserve estimate.

Answer 37

Proved

Question 38

The percentage of material of initial interest that is extracted during mining and/or processing. A measure of mining or processing efficiency.

Answer 38

Recovery

Question 39

An expression of the amount of material of interest irrespective of the units of measurement (which should be stated when figures are reported).

Answer 39

Tonnage

Question 40

A financial or other benefit that is given but is later taken back under defined circumstances.

Answer 40

Clawback rights