Reconciling conservation and amenity with production forestry

[摘要] Fourteen inclined percussive drillholes have shown that weak tin mineralisation persists into the hangingwall slates of the Royalton elvan for a distance of at least 50 m. Geochemically anomalous tin values are recorded along the full strike length of the former opencast workings of the Old Castle-an-Dinas Mine, but the richest concentrations are found near the western, circular-shaped pit. Even here, the grades rarely reach economically interesting levels, and then only over intervals of 1.5 m. Immediately east of the openworks there is a marked enrichment in copper and nickel, but at levels well below those of economic significance.

[发布机构] NERC/Institute of Terrestrial Ecology

[效力级别] Botany