MNG331 BLASTING FINAL EXAM WITH COMPLETE
SOLUTIONS 100% VERIFIED!!
The course objectives include:
-Obtain an understanding of explosives and explosive products, and the ability to
apply this to the breakage of rock in an environmentally acceptable and safe
manner.
-Limiting flyrock
-Breaking rock so it can be loaded, hauled, and crushed effectively.
-Being able to break rock as small as possible. - ANSWER Obtain an
understanding of explosives and explosive products, and the ability to apply this
to the breakage of rock in an environmentally acceptable and safe manner.
The goals of the course include:
-To be knowledgable in the subject and be confident and able to design blasting
shots.
-To learn how to break rock as finely as possible.
-Blowing up a lot of stuff.
-Get a good grade. - ANSWER To be knowledgable in the subject and be
confident and able to design blasting shots.
On average, how much explosives does the United States use every year?
-6000 tons
-6 billion pounds
-1 million tons
-6 mega tons - ANSWER 6 billion pounds
Who invented dynamite?
-Ascanio Sobrero
,-Alfred Nobel
-Lamont Du Pont
-William Bickford - ANSWER Alfred Nobel
What is optimum fragmentation?
-No oversize boulders.
-No fine particles.
-It varies from operation to operation.
-Uniform fragmentation. - ANSWER It varies from operation to operation
Who invented the blasting cap?
-Lamont Du Pont
-William Bickford
-Ascanio Sobrero
-Alfred Nobel - ANSWER Alfred Nobel
The purpose of explosives is to break rock so we can easily (note: Multiple
Answer):
-Haul it
-Load it
-Crush it
-Dig it - ANSWER All of 'em
Crushing and grinding in moving of muckpile __________________________
Fractures extend to free face ______________________________
Crushing around the hole _________________________________
Rotation of fragments ______________________________ - ANSWER Secondary
Crush
, Gas Pressure
Shock Wave
Momentum
What is the most efficient way to use explosives?
-Expand the blasting pattern.
-Maximize energy used to break rock to requirements.
-Use the lowest cost explosives available.
-Minimize energy expending on making: airblast, ground vibrations, and flyrock. -
ANSWER Maximize energy used to break rock to requirements.
Minimize energy expending on making: airblast, ground vibrations, and flyrock.
Why is the use of explosives important to our economy?
-If it's hard rock, you have to use explosives to break it so you can economically
mine it.
-If we didn't have explosives, many raw materials would be very expensive.
-The amount of explosives sold is an important part of our GNP.
-Drilling and blasting is the least expensive way to break solid rock. - ANSWER If
it's hard rock, you have to use explosives to break it so you can economically
mine it.
If we didn't have explosives, many raw materials would be very expensive.
Drilling and blasting is the least expensive way to break solid rock.
Which of the following explosives has the least water resistance?
-40% strength dynamite
-Emulsions
-ANFO
-Slurries - ANSWER ANFO
SOLUTIONS 100% VERIFIED!!
The course objectives include:
-Obtain an understanding of explosives and explosive products, and the ability to
apply this to the breakage of rock in an environmentally acceptable and safe
manner.
-Limiting flyrock
-Breaking rock so it can be loaded, hauled, and crushed effectively.
-Being able to break rock as small as possible. - ANSWER Obtain an
understanding of explosives and explosive products, and the ability to apply this
to the breakage of rock in an environmentally acceptable and safe manner.
The goals of the course include:
-To be knowledgable in the subject and be confident and able to design blasting
shots.
-To learn how to break rock as finely as possible.
-Blowing up a lot of stuff.
-Get a good grade. - ANSWER To be knowledgable in the subject and be
confident and able to design blasting shots.
On average, how much explosives does the United States use every year?
-6000 tons
-6 billion pounds
-1 million tons
-6 mega tons - ANSWER 6 billion pounds
Who invented dynamite?
-Ascanio Sobrero
,-Alfred Nobel
-Lamont Du Pont
-William Bickford - ANSWER Alfred Nobel
What is optimum fragmentation?
-No oversize boulders.
-No fine particles.
-It varies from operation to operation.
-Uniform fragmentation. - ANSWER It varies from operation to operation
Who invented the blasting cap?
-Lamont Du Pont
-William Bickford
-Ascanio Sobrero
-Alfred Nobel - ANSWER Alfred Nobel
The purpose of explosives is to break rock so we can easily (note: Multiple
Answer):
-Haul it
-Load it
-Crush it
-Dig it - ANSWER All of 'em
Crushing and grinding in moving of muckpile __________________________
Fractures extend to free face ______________________________
Crushing around the hole _________________________________
Rotation of fragments ______________________________ - ANSWER Secondary
Crush
, Gas Pressure
Shock Wave
Momentum
What is the most efficient way to use explosives?
-Expand the blasting pattern.
-Maximize energy used to break rock to requirements.
-Use the lowest cost explosives available.
-Minimize energy expending on making: airblast, ground vibrations, and flyrock. -
ANSWER Maximize energy used to break rock to requirements.
Minimize energy expending on making: airblast, ground vibrations, and flyrock.
Why is the use of explosives important to our economy?
-If it's hard rock, you have to use explosives to break it so you can economically
mine it.
-If we didn't have explosives, many raw materials would be very expensive.
-The amount of explosives sold is an important part of our GNP.
-Drilling and blasting is the least expensive way to break solid rock. - ANSWER If
it's hard rock, you have to use explosives to break it so you can economically
mine it.
If we didn't have explosives, many raw materials would be very expensive.
Drilling and blasting is the least expensive way to break solid rock.
Which of the following explosives has the least water resistance?
-40% strength dynamite
-Emulsions
-ANFO
-Slurries - ANSWER ANFO
