State laws and regulations
States maintain ownership of some lands and natural resources and develop their own taxation and royalty systems for oil, gas, nonenergy minerals, and renewable energy. States collect extractive revenue directly. Each state has a unique revenue system.
While all 50 states have some natural resource extraction activity, the 2015 USEITI Report focuses on 18 states that led the country in oil, gas, coal, and nonenergy mineral production in 2013; had the most DOI revenue or state production taxes; or had the most significant tribal natural resource interests.