What does Oregon mine?

* Gold: Oregon is the largest gold producer in the United States, accounting for about 13% of the total domestic production. Gold is primarily mined in the southwestern part of the state, in the Klamath Mountains and Cascade Range.

* Nickel: Oregon is the only state in the United States that produces nickel. Nickel is mined in the southern part of the state, in the Riddle quadrangle.

* Sand and gravel: Oregon is a major producer of sand and gravel, which are used in construction and road building. Sand and gravel are found throughout the state, but the largest deposits are in the Portland metropolitan area and the Willamette Valley.

* Other minerals: Oregon also produces a variety of other minerals, including copper, chromite, tungsten, and uranium. These minerals are found in various locations throughout the state, but the most significant deposits are in the southwestern part of the state.