Chapter 16 Environmental science review
room and Pillar
Type of subsurface mining
hydraulic mining
a mining method used to recover gold from ancient riverbeds
mineral exploration
a process used by mining companies to identify areas where there may be valuable mineral resources
sulfuric acid
a water contaminant that can cause acid mine drainage
Which of the following is NOT one of the ways that ore minerals may form
flooding of empty stream beds and rivers
Gangue minerals
have no commercial value
flux
materials that bond with impurities and seperates them from molten metal during smelting
iron ore
mineral with the highest per capita consumption in the United States
open pit mining
mining method used for large ore deposits near the surface that are mined downward
surface mining
mining method used when shallow ore deposits are located close to Earth's surface; such as: longwall, solution, and open-pit
underground mine fires
one of the most serious consequences of coal mining
Which of the following is NOT a method of subsurface mining
open pit mining
The __ method is used when large coal or ore deposits are found __ the surface
open pit mining, near
reclamation
required by SMRCA
Reclamation is the process of
returning land to its original or better condition after mining
evaporites
salts left behind after evaporation
Which of the following would not be considered an aggregate
sea glass
crushed ore is melted at high temperatures to separate impurities from molten metal during
smelting
The process by which land sinks with little to no horizontal movement is known as
subsidence
alloy
two or more metals combined
