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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?

A4.5 B9.0 C12.0 D7.0

2) What is the highwall?

Avertical face remaining after an area is surface mined Bsediment piles that get carried to a stream Cpile of overburden wastes Ddam used to contain acid mine drainage

3) What often happens to solid mine wastes that are carried off by runoff?

Aclog streams and rivers Bare taken up by vegetation Cseep down into the soil Dare retained within waste impoundments

4) What is a gob pile?

Awaste removed from underground (subsurface) mine Bcollection of ore rock waiting for processing Cpond of acid mine drainage Dsoil that clogs a stream

5) What is a mine portal?

Aplace where ore is stored for later use Bentrance to a drift mine or other mine tunnel Cplace where acid mine drainage is stored Dplace where hazardous equipment is kept

6) Why are mine portals dangerous if left abandoned?

Ait contains high amounts of toxic waste Bpeople, especially children, might be tempted to explore inside Cthey collect large amounts of acid mine drainage Dit is where hazardous machines are stored

7) Which of the following is an example of subsidence?

Aleaking of acid mine drainage to a nearby stream Bopening of a mine portal Cflow of groundwater into a mine Dcaving in of the ground over an abandoned coal mine

8) How should a vertical shaft be treated after a mine is abandoned?

Aleft open Bhave trees planted around it Cfilled with water Dcovered or barricaded

9) In what type of mine would a underground fire be most likely?

Asand quarry Bsubsurface coal mine Copen-pit copper mine Ddiamond shaft mine

10) What are hazardous water bodies at an abandoned mine site usually associated with?

Aexplosives Bhazardous equipment and machinery Clarge waste piles Ddangerous highwalls

*select an answer for all questions

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