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Questions and Answers
What is a naturally occurring inorganic compound with an orderly internal structure and a definite chemical composition?
What is a naturally occurring inorganic compound with an orderly internal structure and a definite chemical composition?
What is a production opening in a metal mine?
What is a production opening in a metal mine?
What type of ore deposits were formed subsequently with the host rock?
What type of ore deposits were formed subsequently with the host rock?
What is the percent increase in volume occupied by a given mass of solid material after it has been blasted or broken?
What is the percent increase in volume occupied by a given mass of solid material after it has been blasted or broken?
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What is the freeing or detaching of large masses of harder rock from a parent deposit?
What is the freeing or detaching of large masses of harder rock from a parent deposit?
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What is the color of a mineral in its powdered form?
What is the color of a mineral in its powdered form?
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What is the term used to describe the lowering of strata, including the surface, due to underground excavation?
What is the term used to describe the lowering of strata, including the surface, due to underground excavation?
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Which mineral is the most common in the earth's crust?
Which mineral is the most common in the earth's crust?
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What is the term used to refer to the working face?
What is the term used to refer to the working face?
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What is the horizontal movement of materials called?
What is the horizontal movement of materials called?
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What is the term used to describe accumulated excreta and remains of birds and bats?
What is the term used to describe accumulated excreta and remains of birds and bats?
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What is the angle of inclination of a deposit, measured from the horizontal?
What is the angle of inclination of a deposit, measured from the horizontal?
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What is the term for a distinct pause or pre-determined time between detonation or initiation impulses?
What is the term for a distinct pause or pre-determined time between detonation or initiation impulses?
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What is the term for a downthrown block bounded by parallel normal faults?
What is the term for a downthrown block bounded by parallel normal faults?
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What is the name of the crystalline variety of the mineral Gypsum?
What is the name of the crystalline variety of the mineral Gypsum?
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What is the term for the wall or rock under the vein?
What is the term for the wall or rock under the vein?
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Which of the following minerals is non-magnetic?
Which of the following minerals is non-magnetic?
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What is the term for the portion of the deposit overlying an excavation and left in place as a pillar?
What is the term for the portion of the deposit overlying an excavation and left in place as a pillar?
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What is the term for the physical weight ratio of blasting agent to the material blasted?
What is the term for the physical weight ratio of blasting agent to the material blasted?
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What is the term used to describe a mineral that can be readily crushed into fine powder?
What is the term used to describe a mineral that can be readily crushed into fine powder?
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What is the term for a central vent or close group of conduits where heated rock materials emerge from the interior of the earth?
What is the term for a central vent or close group of conduits where heated rock materials emerge from the interior of the earth?
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What is the minimum economic value of ore required to make it worth extracting?
What is the minimum economic value of ore required to make it worth extracting?
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What type of fault is characterized by the hanging wall moving up relative to the footwall?
What type of fault is characterized by the hanging wall moving up relative to the footwall?
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What term is used to refer to the direction of extraction away from the working face and toward the entrance?
What term is used to refer to the direction of extraction away from the working face and toward the entrance?
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What is the instrument used for recording the vibrations of the earth's crust?
What is the instrument used for recording the vibrations of the earth's crust?
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What is the term for a crystal appearance resembling slender plant-like branches?
What is the term for a crystal appearance resembling slender plant-like branches?
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What is the vertical measurement of the blasting agent in the blast hole?
What is the vertical measurement of the blasting agent in the blast hole?
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What is the term for a crystal that has replaced another mineral's chemistry or structure with its own without changing the outward shape of the original mineral?
What is the term for a crystal that has replaced another mineral's chemistry or structure with its own without changing the outward shape of the original mineral?
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What is the term for the failure of a charge to explode when expected?
What is the term for the failure of a charge to explode when expected?
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