After the stucco was removed and the damaged sheathing replaced, new plywood sheathing was installed, the window was properly flashed, and the first of two layers of building paper were applied to the exterior wall.
Bauxite, Jamaica's main mineral resource, is a vital element of the country's economy. Other mineral resources include gypsum, limestone, marble, silica sand, clay peat, and to a lesser extent, lignite, black sands containing titanium, copper, lead, zinc and phosphates.
Extraction of aluminium. Aluminium is the most abundant metal on Earth. Despite this, it is expensive, largely because of the amount of electricity used up in the extraction process. Aluminium ore is called bauxite. The bauxite is purified to yield a white powder, aluminium oxide, from which aluminium can be extracted.The extraction is done by electrolysis. But first the aluminium oxide must be made molten so that electricity can pass through it.he bauxite is purified to yield a white powder, aluminium oxide, from which aluminium can be extracted. The extraction is done by electrolysis. But first the aluminium oxide must be made molten so that electricity can pass through it.