Minerals remained for the most part unworked, though the profitable coal fields and oil wells in Ferghana were used when disturbances in Trans-Caspia cut Turkestan off from the Baku oil, on which it relies entirely for its industrial life.
In a modified degree the same is true of the Indian fields; large supplies are unworked, but in several districts, especially about Raniganj and elsewhere in Bengal, workings are fully developed.
Similarly in Siberia and Japan there are extensive supplies unworked or only partially exploited.
Shows the quantity of coal still remaining unworked in the different coalfields at depths not exceeding 4000 f t.
The ground is then left unworked and open to the crumbling influence of frost till towards the end of winter, when it is stirred with the cultivator followed by the harrows, or in some cases ploughed with a shallow furrow.
They consist of large unworked blocks of a travertine which naturally splits into roughly rectangular blocks; these are quite irregular, and often as much as 9 ft.
Rough or unworked flax is found in the lake-dwellings made into bundles, or what are technically called heads, and, as much attention was given to this last operation, it was perfectly clean and ready for use."
By the aid of these a certain amount of work has been done in the subject, but it is still largely an unworked field.
The islands have large (unworked) supplies of pumice, sandstone, sulphur, gypsum, alum and mineral-paint ochres, and some salt, kaolin and sal-ammoniac, but otherwise they are without mineral wealth other than lava rocks for building purposes.
In the first of these senses the word is applied to objects ranging from the unworked stone to the pot or the wooden figure, and is thus hardly distinguishable from idolatry.