The determination of the acceptability of selected fragmenting materials for earthworks compaction. Prepared for the National Roads Directorate, Scottish Office Development Department.

This report considers the use of materials susceptible to crushing during compaction. Such materials include unburnt and burnt colliery spoil, spent oil shale and weak sandstone. It gives recommendations for their use as general fill and, where appropriate, as more specialised selected fills. The potential for the use of such materials is balanced against both economic and environmental factors. (A)