ANCHORAGE, Alaska (AP) — An abandoned mercury mine presents a threat to Alaska Native villagers that has not been adequately addressed by the federal Bureau of Land Management, according to Alaska Attorney General Michael Geraghty. He’s asking the Environmental Protection Agency to intervene.

In a letter this month to EPA Administrator Lisa Jackson, Geraghty said Alaska since 1988 has tried working with federal land managers to properly investigate and clean up the Red Devil Mine 255 miles west of Anchorage. The mine is on the Kuskokwim River, the nation’s ninth largest by discharge at its mouth in the Bering Sea.