BOZEMAN, Mont. (AP) — Montana environmental regulators intend to review about 940 public comments and decide within three weeks whether to approve a proposal to dig test wells at the site of a planned copper mine near White Sulphur Springs.

A Tintina Resources subsidiary plans to apply for an operations permit for the Black Butte mining project, but first is asking state regulators for permission to drill four wells to test how pumping water for the mining operation will affect the groundwater table.