The tribes sent a letter to the Environmental Protection Agency at the end of May asking officials to invoke a section of the Clean Water Act to stop Gogebic's mining exploration in northern Wisconsin. Wisconsin Public Radio News says the EPA and tribes have a meeting scheduled Aug. 16 in Traverse City, Mich.
Bad River Chairman Mike Wiggins says the state's mining laws don't protect the environment. He says EPA intervention would allow federal regulators to gather information at the proposed site.
Gogebic spokesman Bob Seitz says the company wants to continue exploring the mining site.