On July 31, U.S. District Judge James Soto ruled against Hudbay Minerals' $1.9 billion Rosemont copper mining project in Arizona. The ruling overturned the U.S. Forestry Service's 2017 approval of the project and brings to a halt the mine's construction. The initial construction stages were due to start this month. The decision could have national implications regarding the development of mining projects on federal lands.