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