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Abandoned Mine Hazards
Test Description: Reviews hazards associated with abandoned mines
Instructions: Answer all questions to get your test result.
1) What pH value would be closest to acid mine drainage?
A
4.5
B
9.0
C
12.0
D
7.0
2) What is the highwall?
A
pile of overburden wastes
B
sediment piles that get carried to a stream
C
vertical face remaining after an area is surface mined
D
dam used to contain acid mine drainage
3) What often happens to solid mine wastes that are carried off by runoff?
A
seep down into the soil
B
are retained within waste impoundments
C
are taken up by vegetation
D
clog streams and rivers
4) What is a gob pile?
A
soil that clogs a stream
B
collection of ore rock waiting for processing
C
waste removed from underground (subsurface) mine
D
pond of acid mine drainage
5) What is a mine portal?
A
place where ore is stored for later use
B
place where hazardous equipment is kept
C
entrance to a drift mine or other mine tunnel
D
place where acid mine drainage is stored
6) Why are mine portals dangerous if left abandoned?
A
it is where hazardous machines are stored
B
they collect large amounts of acid mine drainage
C
it contains high amounts of toxic waste
D
people, especially children, might be tempted to explore inside
7) Which of the following is an example of subsidence?
A
flow of groundwater into a mine
B
opening of a mine portal
C
leaking of acid mine drainage to a nearby stream
D
caving in of the ground over an abandoned coal mine
8) How should a vertical shaft be treated after a mine is abandoned?
A
covered or barricaded
B
left open
C
have trees planted around it
D
filled with water
9) In what type of mine would a underground fire be most likely?
A
diamond shaft mine
B
subsurface coal mine
C
sand quarry
D
open-pit copper mine
10) What are hazardous water bodies at an abandoned mine site usually associated with?
A
dangerous highwalls
B
explosives
C
large waste piles
D
hazardous equipment and machinery
*select an answer for all questions
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