#1
Which of the following is a common method of surface mining?
Open-pit mining
ExplanationMining conducted on the surface, with removal of ore via an open pit.
#2
What is the term for the settling of solid particles from suspension in water during mining processes?
Sedimentation
ExplanationProcess where suspended solids in water settle out due to gravity, often causing water pollution.
#3
What is the main purpose of the National Environmental Policy Act (NEPA) in the context of mining?
Ensuring environmental impact assessments
ExplanationRequires federal agencies to assess the environmental effects of their proposed actions.
#4
Which international organization is actively involved in setting standards for responsible mining practices?
International Council on Mining and Metals (ICMM)
ExplanationGlobal industry organization working to improve sustainable development performance in mining.
#5
What is the term for the process of returning mined land to its pre-disturbed condition?
Reclamation
ExplanationRestoration of land impacted by mining activities to its original state or to a condition suitable for other uses.
#6
What is the primary environmental impact of open-pit mining?
Deforestation
ExplanationClearing of forests to make way for mining activities, leading to habitat loss.
#7
Which chemical process is commonly used in heap leaching to extract metals from ore?
Cyanidation
ExplanationUse of cyanide solution to dissolve and extract metals from ore heaps.
#8
Which metal is commonly associated with acid mine drainage, causing water pollution?
Iron
ExplanationIron sulfide minerals oxidize in water, producing acidic conditions and leaching iron into water bodies.
#9
What is the primary environmental concern associated with subsurface mining?
Ground subsidence
ExplanationThe sinking or settling of the ground above mined areas, leading to land instability.
#10
Which of the following is a potential consequence of acid mine drainage?
Release of toxic heavy metals
ExplanationAcidic water can dissolve toxic metals, which are then released into the environment.
#11
What is the term for the unintended release of hazardous substances into the environment during mining activities?
Tailings
ExplanationResidual materials left over after the extraction of valuable minerals, often containing toxic elements.
#12
Which international agreement aims to promote responsible mining and sustainable development?
Minamata Convention
ExplanationAn international treaty aimed at reducing mercury pollution, with implications for mining practices.
#13
Which of the following is a method of reclamation in mining to restore ecosystems?
Bioremediation
ExplanationUse of biological processes to remove or neutralize contaminants from a polluted area.
#14
In the context of mining, what does the term 'revegetation' refer to?
Restoration of plant cover
ExplanationReintroduction of vegetation to a previously mined or disturbed area to restore ecological balance.
#15
Which mining method is commonly used for extracting coal deposits?
Mountaintop removal mining
ExplanationSurface mining technique involving the removal of mountaintops to access coal seams.