Roscommon County Council has refused planning permission for expansion works at an existing quarry near Arigna.
Mannok Cement Ltd had sought a development consisting of quarrying operations at the Arigna Shale Quarry at Timpaun.
Works would have included the extraction of shale over 3 and a half hectares that would include an extension and deepening of the existing quarry floor levels.
The plans called for the loading of materials, their transportation from the quarry to the Mannok Cement Works at Ballyconnell in Cavan.
A number of public submissions were provided to Roscommon County Council in opposition to the plans, with locals raising concerns of potential impacts on local water supplies, traffic and pedestrian safety.
County planners refused the application for planning permission under two conditions.
