Things mined in Maine include what?

* Feldspar: Feldspar is a group of minerals that are used in the production of ceramics, glass, and pottery. Maine is the largest producer of feldspar in the United States.

* Granite: Granite is a hard, durable stone that is used for building, paving, and other construction projects. Maine is home to some of the largest granite quarries in the world.

* Sand and gravel: Sand and gravel are used in the construction of roads, buildings, and other infrastructure projects. Maine has abundant deposits of sand and gravel.

* Zinc: Zinc is a metal that is used to galvanize steel, make alloys, and produce batteries. Maine is one of the few states in the United States that produces zinc.