Junior Mining Engineer Interview Questions and Answers

Interview questions for Junior Mining Engineer

• Burn cut pattern involves drilling holes in a specific pattern to create a controlled burn

• SSR support system uses steel sets and resin to support the walls and roof of a mine

• Development cycle involves excavation, support installation, and mucking

• Charging and blasting of development face involves drilling holes, loading explosives, and detonating

• Duties and responsibilities according to regulation include ensuring safety, following ...read more

There are typically three ways to come out in underground mines: shaft, adit, and decline.

• Shaft: Vertical tunnel used for hoisting ore and personnel.

• Adit: Horizontal tunnel used for access to the mine.

• Decline: Inclined tunnel used for moving equipment and ore.

• Examples: The Lucky Friday Mine has a shaft entrance, the Goldstrike Mine has an adit entrance, and the Grasberg Mine has a decline entrance.

There are several types of gases found in underground mines, including methane, carbon monoxide, hydrogen sulfide, and nitrogen.

• Methane is the most common gas found in underground mines and is highly flammable.

• Carbon monoxide is a deadly gas that can be produced during mining operations.

• Hydrogen sulfide is another toxic gas that can be present in underground mines.

• Nitrogen is often used in mining operations to displace oxygen and prevent explosions.

There are four main types of coal: anthracite, bituminous, subbituminous, and lignite.

• Anthracite is the highest rank of coal and is known for its high carbon content and low moisture and volatile matter.

• Bituminous coal is the most commonly used type and is known for its relatively high heat content.

• Subbituminous coal has a lower carbon content than bituminous coal and is commonly used for electricity generation.

• Lignite is the lowest rank of coal and has the highest moisture c...read more

Mining is the process of extracting valuable minerals or other geological materials from the earth.

• Mining involves drilling, blasting, and extracting minerals from the earth's surface or underground.

• It is essential for the production of various resources like coal, gold, copper, and diamonds.

• Mining can have environmental impacts such as habitat destruction and water pollution.

• Technological advancements have made mining safer and more efficient.

• Mining engineers play a crucial ...read more

Detonator factor is a measure of the explosive power of a detonator compared to a standard explosive.

• Detonator factor is calculated by comparing the energy released by a detonator to the energy released by a standard explosive.

• It is typically expressed as a ratio or percentage.

• Detonator factor helps in determining the effectiveness of a detonator in initiating an explosion.

• For example, if a detonator has a factor of 1.5, it means it is 1.5 times more powerful than the standar...read more

Powder factor is the amount of explosive required to break a unit volume of rock.

• Powder factor = Total mass of explosives / Volume of rock to be blasted

• It is typically measured in units of kg/m3 or lb/yd3

• Higher powder factor indicates more explosives are needed for blasting

• Lower powder factor indicates less explosives are needed for blasting

Coal mine regulations involve safety measures, environmental protection, and operational guidelines.

• Regulations ensure safety of workers, such as proper ventilation and emergency procedures.

• Environmental regulations focus on minimizing impact of mining activities, like water and air pollution.

• Operational guidelines cover aspects like mine planning, equipment maintenance, and waste management.