Random Article Quiz #140
Molybdenum mining in the United States
#1 In 2014, what was the value of the United States’ molybdenum production (about 65,500 metric tons)?
About US$1.8 billion
About US$900 million
About US$3.5 billion
#2 What proportion of U.S. molybdenum production in 2013 came from byproduct molybdenum at copper porphyry mines?
47%
25%
70%
#3 What happened to the Thompson Creek mine in Idaho in December 2014?
It was placed on inactive status
It began producing molybdenum
It reopened as an open-pit mine