| 释义 |
burnt shale
burnt shale n (Civil Engineering) carbonaceous shale formed by destructive distillation of oil shale or by spontaneous combustion of shale after it has been some years in a tip: sometimes used in road making burnt shale
burnt shale[¦bərnt ′shāl] (mining engineering) Carbonaceous shale which has remained for a long period in a colliery tip and undergone spontaneous combustion and converted into a coppery slag material. Also known as oxidized shale. |