Campaign group Friends of the Earth has criticised the decision by Northumberland County Council to give planning permission for an opencast coal mine.
More than 10,000 people have objected to the planning application by Bank’s Mining for a surface mine next to Druridge Bay, 30 miles north of Newcastle.
Friends of the Earth campaigner Guy Shrubsole called the developments a "terrible decision for the local community and their environment."
The Banks Group said the scheme would create at least 100 full-time jobs.
Northumberland County Council leader Grant Davey said while he appreciated it was a controversial issue, the mine would bring much needed jobs to the area and boost economic growth in the county.