Orph 1 Flashcards by Gregorio Mahinay III

In the Philippines, a naturally occurring deposit of Hg can be found only in what island?
a. Bohol
b. Samar
c. Masbate
d. Palawan

d. Palawan

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The recognition of the Philippine jurisdiction over this region is the Philippines’ first successful validation of a claim in accord with the 1982 Law of the Sea Convention (UNCLOS). It is also the first major expansion of the Philippines’ maritime boundaries since the late
1970’s when it declared its exclusive economic zone (EEZ).
a. Tubbataha Reefs
b. Benham Rise
c. Spratly Islands
d. North Borneo/Sabah

b. Benham Rise

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It is a poisoning disease that nervous system, mainly central nervous system, is damaged by methylmercury.
a. Plumbism
b. Arsenicosis
c. Minamata
d. Wolframism

c. Minamata

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Which is not true about contour lines?
a. Contours near the upper parts of hills from closures.
b. Contours usually do not cross or intersect each other, except in the rare case of an overhanging cliff.
c. Evenly spaced contours indicate a uniform slope
d. Contours are widely spaced on steep slopes.

d. Contours are widely spaced on steep slopes.

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It is often dubbed as the “gold mining capital of the Philippines”.
a. Cordillera Administrative Region
b. Mimaropa
c. Zamboanga del Sur
d. Davao de Oro

d. Davao de Oro

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The deleterious effect of a gradual accumulation of lead in body tissues, as a result of repeated exposure to lead-containing
substances.
a. Plumbism
b. Arsenicosis
c. Minamata
d. Wolframism

a. Plumbism

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It is the most serious natural constraint that sets the ultimate limit of the overall mine ventilation.
a. Altitude
b. Depth
c. Seepage
d. Air supply

b. Depth

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Involves regulating magnitude and direction of airflow.
a. Quality control
b. Quantity control
c. Temperature-maturity control
d. Temperature-humidity control

b. Quantity control

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The total heat content of air.
a. Vapor pressure
b. Humidity
c. Heating Value
d. Enthalpy

d. Enthalpy

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The height of a column of water or mercury equivalent to the pressure exerted by the air.
a. Pressure
b. Column
c. Head
d. Air pressure

c. Head

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An aerosol of liquid particles in a gas formed by the condensation of liquid or the dispersal of small liquid droplets of a few
micrometers to 100 micrometers in diameter.
a. Smog
b. Smoke
c. Fog
d. Haze

c. Fog

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The amount of gas retained per ton of coal is known as ______.
a. Specific methane emission
b. Seam gas content
c. Methane percent
d. Coal gas percent

b. Seam gas content

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Refers to the random movement displayed by small particles that are suspended in fluids.
a. Translational motion
b. Huttonian movement
c. Brownian motion
d. Rutherford motion

c. Brownian motion

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It is where the first successful mechanical ventilation system was reportedly installed in 1807.
a. Hatfield Colliery
b. Malangas Mine
c. Hebburn Colliery
d. River View Mine

c. Hebburn Colliery

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What should necessarily be done in an underground mine where the difference in elevation between the two ventilation openings at
the surface is insignificant?
a. Natural draft is sufficient; hence flow is not necessarily induced.
b. Natural draft is insufficient; flow may have to be induced.
c. Natural draft is sufficient; but flow may have to be induced.
d. Natural draft is insufficient; but flow is not necessarily induced.

b. Natural draft is insufficient; flow may have to be induced.

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Increasing the number of blades in centrifugal fans yield to:
a. Increase in both the head and the quantity of air discharged.
b. Increase in the head but decrease in the quantity of air discharged.
c. Decrease in both the head and the quantity of air discharged.
d. Decrease in the head but increase in the quantity of air discharged.

a. Increase in both the head and the quantity of air discharged.

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It is the casing of a centrifugal fan that is designed to ensure efficient conversion of velocity to static head.
a. Scroll
b. Inlet
c. Pitch
d. Spigot

a. Scroll

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__________ in a rock mass depends on the number of discontinuity sets, spacing and persistence that separates the blocks.
a. Joint sets
b. Discontinuity
c. Block size
d. Seepage

c. Block size

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What fan law is used in predicting the performance of fans of various sizes that relates the behavior of fans to the ratio of their diameters.
a. Fan Law 1
b. Fan Law 2
c. Fan Law 3
d. Fan Law 4

b. Fan Law 2

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The most common type of slope failure in soils.
a. Toppling failure
b. Planar failure
c. Circular failure
d. Wedge failure

c. Circular failure

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The third quotient for computing the Q-value is a measure of:
a. Block size
b. Joint roughness
c. Stress ratio that reflects the effects of water in in-situ stresses.
d. The smooth slickensided joints with clay fillings.

c. Stress ratio that reflects the effects of water in in-situ stresses.

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A brakeman signals four blows of whistle. What does he wanted to entail?
a. to stop train in motion
b. to move train forward slowly
c. to move train back slowly
d. to move train back

c. to move train back slowly

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For site investigation purposes, the minimum depth of core drilling in bedrock is
a. 1 m
b. 3 m
c. 6 m
d. 9 m

b. 3 m

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The ratio of the apparent dip to the true dip for a given bedding plane is
a. Equal to 1
b. Greater than 1
c. Equal to or greater than 1
d. Less than 1

d. Less than 1

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What percent of the total area of the approved tenement shall be set aside as a reference ecosystem as ordered by DAO 2022-04? a. atleast 6% b. 5% at most c. not greater than 15% d. at least 5%

d. at least 5%

Used in the development of pits having a slope angle with a relatively high factor of safety so that the slopes are stable during the exploitation of the deposit. a. ultimate slope b. Cut slope c. Working slope d. Pit slope

c. Working slope

For ropes of 6 x 19 construction, _______ diameter of drums or sheaves is needed. a. 30 x the rope diameter b. 60 x the rope diameter c. 96 x the rope diameter d. 100 x the rope diameter

b. 60 x the rope diameter

Which of the following does not belong to the group? a. Aerial Tramway b. Slurry pipeline c. Rail haulage d. LHD

d. LHD

These are solid components of the diesel exhaust, which are ultrafine mixture of elemental and organic carbon, and minor constituents including sulfates and metal ash. a. Water b. Asbestos c. Hydrocarbons d. Diesel particulate matter

d. Diesel particulate matter

The most commonly used control device in underground mine ventilation among mines that utilizes LHD and track rails as means of ore hauling. a. Breakthrough b. Doors c. Brattice d. Airlocks

a. Breakthrough

Which among the following element is not classified as a critical mineral? a. Bismuth a. Nickel b. Uranium c. Neodymium

b. Uranium

At ____ percent oxygen in the air, symptoms including dizziness, buzzing in ears, and rapid heartbeat are observed among underground miners. a. 17 b. 15 c. 13 d. 9

b. 15

The “Electric 18” is a list of critical materials for energy, named so because these are the foundations for the clean energy revolution. As determined by the US Department of Energy, which does not belong on the list? a. Electrical steel b. Silicon c. Natural Graphite d. Zinc

d. Zinc

Which among the following is an advantage of applying shotcrete using wet-mix technique? a. Minimal quality control issues, because mixing is done in a controlled plant environment b. Large percentage of rebound c. Maximum flexibility in delivery in terms of time, because curing begins only when the shotcrete is applied d. Dusty environment created

a. Minimal quality control issues, because mixing is done in a controlled plant environment

These chemicals are put into concrete to affect the mixing, placing, and curing processes. Among typically used for shotcreting are accelerators, air-entraining agents, and pozzolans. a. Water b. Cement c. Admixtures d. Fly ash

c. Admixtures

The following are the concerns as to why it is generally desirable to avoid switchbacks in a pit except: a. Switchbacks can make material handling less efficient, as trucks or conveyors need to navigate tighter turns, which can reduce speed and productivity. b. Managing erosion and sediment control can be more challenging in switchback areas due to complex terrain c. Switchbacks provide a viable solution in confined spaces where there is not enough horizontal space for a more gradual gradient. d. The confined turns may limit visibility for operators, leading to potential collisions or accidents.

c. Switchbacks provide a viable solution in confined spaces where there is not enough horizontal space for a more gradual gradient.

Which statement is true about haulage road gradients? a. In a pit where there is a considerable vertical component to the haulage requirement, the grade will have to be fairly steep to reduce the length of the road and the extra material necessary to provide the road length. b. There is nothing to be gained by flattening the road below 8%, unless there is a long distance to without requiring much lift. c. Pit geometry is the prime consideration and roads are designed to fit the particular situation. d. All of the above.

d. All of the above.

If the bench face angle is 69◦, the bench width is 30 ft, and the bench height is 45 ft, determine the overall pit slope, which consists of 5 benches. a. 56.31◦ b. 47.47◦ c. 33.69◦ d. 65.31◦

b. 47.47◦

If you were a haulage truck driver, what effect would cross-slope have on you? a. Cross-slope would enhance your truck’s fuel efficiency as sideways tilt of the road allows the truck to glide more smoothly. b. The load inside the truck can shift, leading to uneven weight distribution that can affect handling, stability, and braking. c. The suspension system of the truck is unlikely to experience additional stress due to cross-slope, and it is not expected to lead to increased wear or maintenance needs. d. Cross-slope has no effect to the driver as it is a road design parameter.

b. The load inside the truck can shift, leading to uneven weight distribution that can affect handling, stability, and braking.

The exploitation of open pit deposits usually takes place through a series of mining phases, commonly known as: a. Switchback b. Push back c. Sectioning d. Phasing

b. Push back

Job efficiency in the context of mining are various delay factors that impact productivity and operational performance. Among these factors include: a. Equipment downtime b. Weather conditions c. Accidents/incidents d. All of the above

d. All of the above

What thing give rise to low operating efficiency? a. High equipment utilization rates b. Consistent quality control check-ups c. Well-defined standard operating procedure d. Frequent equipment downtime

d. Frequent equipment downtime

What is meant by rimpull? a. The ability of a vehicle to achieve high top speeds b. The rate at which a vehicle’s engine consumes fuel c. The force exerted by the wheels of a vehicle to pull or move a load d. The amount of load a vehicle can carry

c. The force exerted by the wheels of a vehicle to pull or move a load

Wheel loaders are often used both as primary and secondary excavators in mining operations today. One problem is that they do not have the same digging height capability as rope shovels and thus have problems in scaling bench faces. How is this to be overcome? a. Enhance loader attachments b. Buy and use separate equipment as an auxiliary c. Adjust the design of the benches and implement step-back benching techniques d. Procure high-lift loaders

c. Adjust the design of the benches and implement step-back benching techniques

What is the difference between profit and cash flow? a. Profit is the difference between total revenue and total expenses including non-cash items like depreciation, while cash flow refers to the actual cash generated and used by the business, excluding non-cash items. b. Profit is calculated based on the company’s total assets, whereas cashflow is based on the company’s liabilities. c. Cash flow represents the amount of profit a company makes after taxes, while profit is the total cash available for reinvestment d. Profit and cash flow are the same thing; they both refer to the total revenue a company generates.

a. Profit is the difference between total revenue and total expenses including non-cash items like depreciation, while cash flow refers to the actual cash generated and used by the business, excluding non-cash items.

How does the choice of bench height affect the compositing? a. It affects the rate of at which the ore is processed but has no impact on compositing practices. b. Changing bench height will only affect the type of mining equipment used, not the compositing process c. It affects how ore is sampled and composited; higher bench height may lead to potentially more variable samples d. Bench height does not affect compositing; it only impacts the size of the haulage trucks.

c. It affects how ore is sampled and composited; higher bench height may lead to potentially more variable samples

Is a scale of 1:50 larger or smaller than a scale of 1:20? a. A scale of 1:50 is larger because it shows more detail b. A scale of 1:50 is smaller because it represents a larger area c. A scale of 1:50 is larger because it shows a smaller portion of the object d. A scale of 1:50 is smaller because each unit on the drawing represents 50 units in reality

d. A scale of 1:50 is smaller because each unit on the drawing represents 50 units in reality

In the metric system, what is meant by a scale of 1:1000? a. 1 meter on the drawing represents 1000 meters in reality b. Indicates that the drawing is 1000 times larger than the actual object c. In every 1000 units in reality are represented as 1 unit on the drawing d. It means that 1 unit on the drawing represents 1000 units in reality

d. It means that 1 unit on the drawing represents 1000 units in reality

What might an experimental variogram looks like for a porphyry copper deposit? a. Shows strong horizontal continuity, with a variogram exhibiting a clear range in the horizontal direction and a lower, possibly abrupt sill b. Displays complex variability with a variable range and a high sill, reflecting the widespread yet irregular mineralization c. Shows high variability wit ha pronounced nugget effect and a shorter range due to the discrete and erratic distribution of copper particles d. The range may be relatively short because PCD is often found in discrete pockets or channels.

b. Displays complex variability with a variable range and a high sill, reflecting the widespread yet irregular mineralization

A privately funded lunar transportation and data services company that aims to commercialize space activities beyond earth orbit. It is one of six U.S. companies selected by NASA for its lunar data program. a. Hakuto b. SpaceL c. Synergy Moon d. Moon Express

d. Moon Express

Which of the following is needed in the manufacturing batteries of electric vehicles? a. Lithium b. Cobalt c. Nickel d. All of the above

d. All of the above

What is the main objective of coal beneficiation? a. To make coal easy to transport b. To enhance the coal’s odor for easier identification c. To improve quality of the coal by removing impurities d. To increase the radioactive content of the coal

c. To improve quality of the coal by removing impurities

It is used to convert volume measurements of ore into weight estimates for planning and operational purposes. a. Tonnage Factor b. Swell Factor c. Recovery Factor d. Blending Factor

a. Tonnage Factor

Higher and wider benches yield: a. More selectivity; separates high and low grade ores and ores of different types b. More dilution c. More working places hence greater flexibility d. Inefficiencies and lower productivities associated with smaller machines

b. More dilution

_____ are used on every level of the pit to create a new bench. a. Crosscuts c. Drop cuts c. Ramps d. Sidehill cuts

c. Drop cuts

Became the first power station in the world to successfully use Carbon Capture and Storage (CCS) technology. a. Kemper County Coal CCS, Mississippi, US b. Petra Nova CCS Project, Texas, US c. Boundary Dam, Saskatchewan, Canada d. Abu Dhabi CCS Project, UAE

c. Boundary Dam, Saskatchewan, Canada

This is NASA’s initiative aimed at returning humans to the Moon and establishing a sustainable presence there. It represents a significant step in NASA’s long term goal of deep space exploration and aims to pave the way for future missions to Mars. a. The Voyager Program b. The Hubble Space Telescope Mission c. The Mars Rover Initiative d. The Artemis Program

d. The Artemis Program

In cut and fill mining, what is the primary advantage of using paste backfill over hydraulic fill? a. Higher ore recovery rates b. Reduced operational costs c. Improved structural stability of underground workings d. Enhanced environmental performance

c. Improved structural stability of underground workings

Determine the efficiency hours based on the following data: Total hours: 2000 hrs/yr (50 wks/yr, 5 days/wk, 8 hrs/day) Mechanical availability = 0.80 Utilization = 0.90 Working efficiency = 0.90 (1/2 hr lunch, 18 min. travel) Operating efficiency = 0.83 (50 min./hr) a. 1076 hours b. 1296 hours c. 2003 hours d. 1345 hours

a. 1076 hours

Which geophysical method is best suited for detecting variations in subsurface density related to mineral exploration? a. Seismic reflection b. Magnetic survey c. Gravity survey d. Electrical resistivity

c. Gravity survey

What role does the Kriging method play in geological modeling for mine planning? a. Estimating the uncertainty in ore reserves b. Mapping the location of surface geological features c. Calculating the bulk density of the mineral deposit d. Optimizing the haulage routes within the mine

a. Estimating the uncertainty in ore reserves

In mining terminology, what does the acronym “ROM” stand for? a. Rare ore mineral b. Run-of-mine c. Refinery operations manual d. Regional ore mapping

b. Run-of-mine

Which precious metal is primarily extracted using the Merrill-Crowe process in mining operations? a. Platinum b. Palladium c. Rhodium d. Silver

d. Silver

Which country is known for its extensive diamond mining operations in the region of Kimberley? a. Botswana b. South Africa c. Democratic Republic of Congo d. Namibia

b. South Africa

____, particularly when combined with nickel, contributes to higher energy density in lithium-ion batteries which translates to longer driving ranges and improved performance for electric vehicles. a. Iron b. Cobalt c. Molybdenum d. Neodymium

b. Cobalt

What is the primary advantage of using in-situ leaching (ISL) over conventional mining methods for uranium extraction? a. Lower environmental impact b. Higher recovery rates c. Reduced water usage d. Faster production start-up

a. Lower environmental impact

Which rare earth element is predominantly extracted from monazite deposits using solvent extraction techniques? a. Europium b. Cerium c. Neodymium d. Yttrium

c. Neodymium

This type of solar photovoltaic (PV) technology has the highest efficiency for converting sunlight into electricity. a. Thin-film b. Monocrystalline silicon c. Polycrystalline silicon d. Concentrated photovoltaic

d. Concentrated photovoltaic

It is an act mainstreaming climate change into government policy formulations, establishing the framework strategy and program on climate change. a. RA 10121 b. Writ of Kalikasan c. RA 9729 d. PD 979

c. RA 9729

Measures the absorption of light by free atoms in the gaseous state, which occurs when the atoms absorb light at specific wavelengths corresponding to the energy required to promote an electron to a higher energy level. a. XRF b. XRD c. AAS d. XPS

c. AAS

The updated general effluent standard for Copper in Class SA water bodies is a. 2 mg/L b. 1 mg/L c. 0.2 mg/L d. NDA

d. NDA

Most commonly used to generate electricity in coal-fired power plant. a. Anthracite b. Bituminous c. Metallurgical d. Subbituminous

d. Subbituminous

The SDGs are universal set of goals, targets and indicators that UN member states will be expected to use to frame country agendas and policies over the next 15 years. It consists of_____ goals, 169 targets and 232 unique indicators. a. 19 b. 17 c. 16 d. 15

b. 17

With the decreasing grade values of copper ores, the utilization of wastes like tailings that carry certain amounts of copper as secondary sources has become a necessity in both the economic and environmental senses. What derivatives can be used in selective copper extraction from tailings? a. Iron salts b. Sodium salts c. Ammonia salts d. Evaporites

c. Ammonia salts

This book focused on five basic factors that the author/s claimed determined, and therefore ultimately limited, growth on Earth: population, agricultural production, natural resources, industrial production, and pollution. a. Silent Spring by Rachel Carson b. The Future We Choose by Tom Carnac c. Limits to Growth by Meadows & Meadows d. Our Common Future by Brundtland Commission

c. Limits to Growth by Meadows & Meadows

This is a type of mining technology that creates artificial environment using real-life data to immerse miners and prepare them to take on new mining environments. a. Artificial Intelligence b. Virtual Reality c. Robotics d. Spatial Data

b. Virtual Reality

A free falling chisel bit hung on a cable to which percussive motion is imparted by a power unit. It is commonly used for soft and medium formation. a. Auger drilling b. Churn drilling c. Diamond drilling d. Wire line drilling

b. Churn drilling

In the mining industry, how is the concept of circular economy applicable? a. By utilizing renewable energy sources that can reduce on fossil fuels in mining operations b. Recovering and recycling waste materials back into production processes such as reprocessing tailings to extract remaining minerals c. Using less invasive mining techniques and conduct comprehensive environmental impact assessments before operations d. Collaboration with indigenous communities, integrating their perspectives, and sharing benefits from mining activities.

b. Recovering and recycling waste materials back into production processes such as reprocessing tailings to extract

It is the idea of extracting valuable materials from waste, much of which would otherwise go to landfill or incineration. It allows to salvage materials of which there is a finite supply and limits the environmental impact of their disposal. a. Biomass extraction b. Urban mining c. Ore recycling d. Waste segregation

b. Urban mining

The utilization of magnetic materials has proven to have a significant impact on the efficiency and effectiveness of renewable energy related technologies. Many renewable energy sources use magnets made primarily of _____ as their high magnetic strength enables greater power generation efficiency. a. Scandium b. Neodymium c. Copper d. Barium

b. Neodymium

It refers to water, sea bottom and substratum measured twenty-four nautical miles (24 n.m.) seaward from the baseline of the Philippine archipelago. a. Territorial Waters b. High Sea c. Contiguous Zone d. Onshore

c. Contiguous Zone

Sampling method used for hard, dense, irregularly distributed mineralizations. It is done by chipping off same-sized fragments covering the entire surface exposure. a. Bulk sampling b. Chip sampling c. Car sampling d. Channel sampling

b. Chip sampling

Which does not belong to the group? a. Uranium b. Lithium c. Nickel d. Platinum

a. Uranium

Works by transmitting a sound through the rocks of the borehole wall. a. Caliper logging b. Neutron porosity logging c. Induced Polarization d. Sonic logging

d. Sonic logging

It refers to the rapidity, responsiveness, and timeliness of data delivery to the user. a. Big data b. Real-time data c. Dated information d. Outlier

b. Real-time data

In terms of value, which commodity is the Philippines' main export? a. Integrated circuits b. Gold c. Bananas d. Coconut oil

a. Integrated circuits

The following are unsafe acts except: a. Poor ventilation b. Disregarding posted warning signs c. Failure to wear PPE d. Lifting heavy material incorrectly

a. Poor ventilation

New employees having no surface mining experience shall receive ____ of training if they are to work on the surface. a. No less than 8 hours b. No less than 4 hours c. No less than 24 hours d. No less than 12 hours

c. No less than 24 hours

Those underground and surface mines/service contractor, employing a total of not more than 25 and 50 personnel respectively. a. Class D b. Class E c. Class A d. Class C

a. Class D

It refers to geographic-based instruments for planners and decision-makers, which presents a description of the environmental setting including the state of environmental quality and evaluation of the assimilative capacity of an area. a. Eco-profile b. Geo-profile c. Software d. EIS

a. Eco-profile

Below are classified as quarry resources except: a. serpentine b. Tuff c. Gabbro d. laterite

d. laterite

Refers to the document required of proponents describing the environmental impact of, and mitigation and enhancement measures for projects or undertakings located in an Environmentally Critical Area. a. EIS b. EIA c. EWP d. IEE

d. IEE

Emitted during agricultural, land use, and industrial activities; combustion of fossil fuels and solid waste as well as during treatment of wastewater. a. CFC b. Nitrous Oxide c. Methane d. Fluorinated Gas

b. Nitrous Oxide

How can underground mine fires impact ventilation systems? a. By increasing airflow efficiency b. By generating toxic gases c. By reducing humidity levels d. By increasing underground temperature

b. By generating toxic gases

It is the planting and growing trees in areas with no previous tree cover. a. Kaingin b. Deforestation c. Reforestation d. Afforestation

d. Afforestation

In which scenario would hydraulic mining be most appropriate? a. Hard rock mining b. Deep underground mining c. Large-scale surface mining d. Narrow vein mining

c. Large-scale surface mining

In which type of deposit would auger mining be most effective? a. Deep-sea manganese nodules b. Thin coal seams c. Underground gold veins d. Placer deposits

b. Thin coal seams

The first HPAL processing plant in the Philippines opened in 2005. a. Taganito HPAL b. EPI c. Coral Bay Nickel Corporation d. Huayue Nickel and Cobalt

c. Coral Bay Nickel Corporation

What geological indicator mineral is often associated with diamond deposits and aids in prospecting efforts? a. Pyrite b. Quartz c. Feldspar d. Ilmenite

d. Ilmenite

Aside from the usual gold, silver, and bronze content, the Paris 2024 Olympic medals contain an embedded hexagon of what metal that came from the scrap left over from renovations and repairs of the Eiffel Tower since its original construction in 1889. a. Tin b. Copper c. Iron d. Titanium

c. Iron

Orph 1 Flashcards

(100 cards)