JAH NIEZA

What is the primary purpose of a "stope" in underground mining?

• To store explosives

• To house mine workers

• To extract ore

• To ventilate the mine

Which of the following mining methods is a type of "open-stope" method?

• Cut-and-fill mining

• Room and pillar mining

• Square-set timbering

• Block caving

What is the main function of a "raise" in an underground mine?

• To move ore from a lower level to a higher level

• To provide access for workers to a new level

• To ventilate the mine

• To transport explosives

A "shaft" in underground mining is typically used for:

• Hauling ore to the surface

• Storing equipment

• Providing access to different levels

• Provide support underground

What is the main disadvantage of "longwall mining"?

• Low production rate

• High cost of equipment

• High risk of ground collapse

• Limited to thin, tabular ore bodies

Which of the following is NOT a form of ground support in underground mining?

• Rock bolts

• Shotcrete

• Timber sets

• Ventilation fans

The process of using explosives to break up rock is known as:

• Blasting

• Mucking

• Drilling

• Bolting

What is the purpose of a "slusher" or "scraper" in underground mining?

• To drill holes for explosives

• To load broken rock into ore cars

• To provide ventilation

• To transport personnel

Which underground mining method is most suitable for a massive ore body with a low-grade ore?

• Cut-and-fill mining

• Block caving

• Shrinkage stoping

• Sublevel stoping

What is the primary safety concern related to the use of "diesel equipment" in an underground mine?

• High fuel costs

• Exhaust fumes and a lack of oxygen

• Noise pollution

• Risk of fire