Molybdenum mining in the United States
Molybdenum mining in the United States produced 65,500 metric tons of molybdenum in 2014, worth US$1.8 billion. The US was the world's second-largest molybdenum producer, after China, and provided 25% of the world's supply of molybdenum.
Source: Wikipedia — Molybdenum mining in the United States (CC BY-SA 4.0)