EurekaMag.com logo
+ Translate

The prevalence of silicosis in orange free state south africa gold miners


, : The prevalence of silicosis in orange free state south africa gold miners. Journal of Occupational Medicine 29(1): 44-46

The prevalence of silicosis in the migrant laborer in the South African, Orange Free State gold mines has not previously been estimated. Two methods were used to estimate the prevalence of silicosis in this population. The two techniques are described. The difference between the two estimates illustrates the difficulty of epidemiologic studies in this type of working population. It is noted that the highest estimate of 138 cases per 10,000 workers is certainly less than the true prevalence of the disorder. The use of routine miniature (100-mm) chest radiographs for the detection of silicosis was validated through comparison with normal size (125-kV radiographs) and through analysis of the consistency of reading of second miniature films from the same subjects.

(PDF 0-2 workdays service)

Accession: 006740512

Submit PDF Full Text: Here


Submit PDF Full Text

No spam - Every submission is manually reviewed

Due to poor quality, we do not accept files from Researchgate

Submitted PDF Full Texts will always be free for everyone
(We only charge for PDFs that we need to acquire)

Select a PDF file:
Close
Close

Related references

Cowie, R.L.; van Schalkwyk, M.G., 1987: The prevalence of silicosis in Orange Free State gold miners. The prevalence of silicosis in the migrant laborer in the South African, Orange Free State gold mines has not previously been estimated. Two methods were used to estimate the prevalence of silicosis in this population. The two techniques are descr...

Knight, D.; Ehrlich, R.; Fielding, K.; Jeffery, H.; Grant, A.; Churchyard, G., 2016: Trends in silicosis prevalence and the healthy worker effect among gold miners in South Africa: a prevalence study with follow up of employment status. Given the intimate association between silicosis and tuberculosis, understanding the epidemiology of the South African gold mining industry silicosis epidemic is essential to current initiatives to control both silicosis and tuberculosis in this p...

Saager Rudolf, 1968: A myrmekitic intergrowth of linnaeite, gold, and pyrrhotite from the Basal Reef of the Orange Free State gold field, South Africa. Detrital mineral grain, electron microprobe analysis, interpretation of source as heavy mineral derived from primary uranium ore and deposited in Witwatersrand conglomerate (Precambrian).

Young David R.; Viljoen Morris J., 1994: The stratigraphy, sedimentology and gold distribution of the VS5/ Beatrix composite reef at H. J. Joel gold mine, Orange Free State, Goldfield, Republic of South Africa. Exploration and Mining Geology 3(3): 195-206

Schidlowski M., 1968: The gold fraction of the Witwatersrand conglomerates from the Orange Free State goldfield (South Africa). Sedimentary distribution pattern, reconstituted gold fractions, modified placer theory of origin, petrographic and chemical analyses.

Schwellnus J.E.G., 1953: The distribution of the gold within the Basal Reef, Orange Free State, Union of South Africa. Canadian Mining Journal 74(6): 100

Threader V.M., 1963: A study of fracture patterns in the Orange Free State gold fields of South Africa. Plotting of spatial data shows that the fracture patterns are all related directly or indirectly to a single stress field that was initiated by a roughly east-west compression. A certain amount of rotational stress was also operative and caused de...

Schidlowski Manfred, 1968: Marginal structures of the Witwatersrand basin in the northern Orange Free State gold field, South Africa. Tectonic analysis, early Precambrian rather than Algonkian deformation, synsedimentary folding, reverse and thrust faulting, later normal faulting and tilting, transition from compressional to tensional deformation.

Frost A., 1946: The discovery and prospecting of a potential gold field near Odendaalsrust in the Orange Free State, Union of South Africa. Geophysics and drilling were applied to prospecting for gold-bearing conglomerates in the St. Helena area, south of Odendaalsrust, Orange Free State. A detailed description of the geological succession passed through in all the boreholes, and corr...

Tweedie K.; Mcdonald A., 1983: The discovery and explanation of Beisa Beatrix uranium and gold mines in the southern extension of the Orange Free State Goldfield, South Africa. Report of the