Tags. Worldwide: UNAIDS estimates that as of December 2000, there were an estimated 36.1 million people living with HIV/AIDS (34.7 million adults and 1.4 million children under 15). Since the epidemic began, an estimated 21.8 million people have died of AIDS (17.5 million adults and 4.3 million children under 15).
Definition. Black lung disease is the common name for coal workers' pneumoconiosis (CWP) or anthracosis, a lung disease of older workers in the coal industry, caused by inhalation, over many years, of small amounts of coal dust.he only way to prevent black lung disease is to avoid long-term exposure to coal dust. Coal mines may help prevent the condition by lowering coal dust levels and providing protective clothes to coal miners. A light micrograph of a human lung containing particles of inspired coal dust (anthracosis).
This type of coal contains 20-30% moisture and can be used for heating or generating electricity.- Bituminous coal. A soft, dense and black coal. Bituminous coal is the most common coal and has a moisture content of less than 20%. This type of coal is usually used for generating electricity and heating in the home. - Anthracite coal. Also known as hard coal, this type of coal is hard and black. Anthracite is high in carbon and low in sulphur, with a moisture content of less than 15%. Anthracite is a naturally occurring smokeless fuel and is used in solid fuel cookers and boilers.