Health problems of gold miners who worked underground include decreased life expectancy; increased frequency of cancer of the trachea, bronchus, lung, stomach, and liver; increased frequency of pulmonary tuberculosis (PTB), silicosis, and pleural diseases; increased frequency of insectborne diseases, such as malaria and dengue fever; noiseinduced hearing loss; increased prevalence of certain ...

Background: Tanzania has a young mining history with several operating open pit and underground mines. No prevalence studies of noiseinduced hearing loss (NIHL) have been conducted among mine workers to provide an impetus for the development of comprehensive hearing protection programmes.

Other gold mines use underground mining, where the ore is extracted through tunnels or shafts. South Africa has the world's deepest hard rock gold mine up to 3,900 metres (12,800 ft) underground. At such depths, the heat is unbearable for humans, and air conditioning is required for the safety of the workers.

Underground Gold 90 18 Underground Platinum 119 27 Underground Coal 72 23 Opencast Coal 74 33 Total 355 101 Small to mediumscale mines Ready Mix 6 6 ... Noise exposure levels in gold mining occupations r r r r r r r r t s t r n man e k Gold mining occupations L q A)

Stawell Gold Mines operations generate noise from a range of activities, including plant and equipment operation, material handling, processing operations (, milling and crushing), underground blasting, and exploration (, drilling).

Underground mines are the alternative to surface mines. Surface mines excavate from the top down, a method that can become inefficient at depths greater than about 200 feet (60 meters) [sources: Illinois Coal Association, De Beers].Undergrounds coal mines can drive 2,500 feet (750 meters) into the Earth and other types even deeper uranium mines can reach 6,500 feet, or 2 kilometers.

noise exposure in western underground gold and silver mines SPENCER Ellsworth R. Spencer, is research engineer, with the National Institute for Occupational Safety and Health (NIOSH), Pittsburgh, PA. Abstract An assessment of western hardrock miners' noise exposures was conducted as part of a multiyear National

Noise is ubiquitous in mining. It is generated by powerful machines, fans, blasting and transportation of the ore. The underground mine usually has limited space and thus creates a reverberant field. Noise exposure is greater than if the same sources were in a more open environment.

15/12/2016 · Hazards created by the work environment include airborne contaminants, fumes, noise and toxic substances. There are several causes of injuries in a mining environment. This is why the mine operator has to ensure that all of the working personnel is .