WHITE SULPHUR SPRINGS, Mont. -

Supporters and opponents of a proposed copper mine near the Smith River State Park and River Corridor have recently launched their respective public-relations campaigns.

The social-media blitzes from both sides of the proposed Black Butte mine north of White Sulphur Springs are unlikely to let up until the mine is approved or rejected, three or four years down the road.

Canadian mining company Tintina Resources is being challenged by a coalition of environmental groups and Smith River outfitters.

They have created Facebook pages and Twitter accounts in the battle for public opinion.

Georgetown University public relations expert Bruce Harrison tells the Bozeman Daily Chronicle that corporate mining entities have been a little slower than environmental groups in using social media, but he says that's changing.