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Geology Exam 3 – 1120 with 100% correct answers
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Which ore deposit would generate the most waste rock? A. An ore deposit with high grade and high tonnage. B. An ore deposit with high grade and low tonnage. C. An ore deposit with low grade and high tonnage. D. An ore deposit with low grade and low tonnage. E. Impossible to determine since amo...

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  • January 3, 2024
  • 12
  • 2023/2024
  • Exam (elaborations)
  • Questions & answers

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Geology Exam 3 – 1120 with 100% correct answers
Which ore deposit would generate the most waste rock?
A. An ore deposit with high grade and high tonnage.
B. An ore deposit with high grade and low tonnage.
C. An ore deposit with low grade and high tonnage.
D. An ore deposit with low grade and low tonnage.
E. Impossible to determine since amount of waste rock is determined by metal type. - answer C. An ore deposit with low grade and high tonnage.
Which of the following is not a potential environmental hazard associated with waste rock production? Choose the best answer.
A. Mobilization of small particulates by air
B. Creation of sulfuric acid
C. Dissolving heavy metals out of rock
D. Complete destruction of forest ecosystems
E. Contamination of freshwater sources - answer D. Complete destruction of forest ecosystems
Based on what you know so far, which resource that we learned about would not require crushing and milling as part of beneficiation?
A. Gold
B. Silver
C. Copper
D. Diamonds
E. All of the above would require crushing and milling - answer D. Diamonds
Which part of beneficiation poses the greatest risk for acid mine drainage?
A. Crushing B. Milling
C. Leaching
D. Flotation
E. All of the above are equally likely to cause acid mine drainage - answer C. Leaching
Why aren't there any abandoned hard rock mines in the central US?
A. Those states are not required to report abandoned mines to the federal government.
B. Those states have a law that prevents mining companies from abandoning their mines.
C. All mines in those states are still operating.
D. Those states only have diamond mines, which are not shown on this map.
E. Those states don't have metal resource deposits. - answer E. Those states don't have metal resource deposits.
In which of the following scenarios could acid mine drainage potentially occur?
A. Exploration for an ore deposit
B. Mining a silver deposit using an open pit mine
C. Storage of tailings from gold mining in a tailings pond
D. Mining sand for building materials using an open pit mine
E. Two of the above options - answer E. Two of the above options (B and C)
Which of the following would be considered a remediation effort?
A. Reintroducing wildlife to a former mine site
B. Treatment of contaminated groundwater
C. Revegetating a waste rock pile
D. Refilling of an open pit mine with rock and soil
E. Converting a quarry into a swimming lake - answer B. Treatment of contaminated groundwater
Which of the following is not a fossil fuel?
A. Coal

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