Silicosis in mining and quarrying in South Australia

• accelerated silicosis – exposure over 1 to 10 years but usually only 3–10; historically rare • acute silicosis – exposure for less than 1 year (used to be less than 3 years); historically very rare. Sources of fine crystalline silica in mines and quarries At mine and quarry sites, a number of operational processes produce

Mini-review: Silico-tuberculosis

The effects of awareness campaigns to sensitize mine workers about their risk of silicosis and of the use of personal protective measures should also be investigated. ... Hayumbu P., Robins T.G., Key-Schwartz R. Cross-sectional silica exposure measurements at two Zambian copper mines of Nkana and Mufulira. Int J Environ Res Public Health. 2008 ...

Silicosis

Silicosis is the world's most prevalent occupational lung disease and is characterized by irreversible, progressive pulmonary fibrosis leading to restrictive lung disease. ... pottery, porcelain work, tunneling, mining, and structural construction and demolition. Silica exists in amorphous and crystalline forms that have unique physiochemical ...

Predictors of silicosis and variation in prevalence across mines …

Silicosis prevalence by mine cluster, unadjusted (panel a) and adjusted (panel b) for covariates (N = 14,221). Footnote: Adjusted for gender, age, racial ascription, country of origin, duration since starting in the industry, skill level, and underground versus surface location. The figure shows predicted prevalences of silicosis in each ...

Cross-Sectional Silica Exposure Measurements at Two …

The specific objective of dust exposure assessment at Nkana and Mufulira Mines was to characterize current respirable dust and crystalline silica exposure at the two copper …

Respirable crystalline silica dust exposure and regulated …

silicosis. Unfortunately, most mine workers in southern Africa work in poorly controlled environments, where exposure to high levels of RCS increases their risks of developing silicosis and TB.6 ... and Nkana Mine, located in Chililabombwe, Mufulira, Chingola, and Kitwe districts, respectively. There are also four open-pit

RISK FACTORS ASSOCIATED WITH SILICOSIS IN ZAMBIAN

Occupational inhalation of crystalline silica (silica or silicon dioxide) dust as happens in various mining and other rock abrasive works is the cause of silicosis. However, the risk of

Cross-sectional silica exposure measurements at two …

We measured the quartz content of 20 bulk settled dust and 200 respirable dust samples in a cross-sectional dust exposure assessment that is part of an epidemiological study to ascertain …

Feature: Silicosis in the Workplace | NIOSH | CDC

Many cases of silicosis have been reported nationally and internationally among engineered stone countertop fabricators. In 2019, eighteen cases of silicosis, including two fatalities, were reported among engineered stone countertop fabrication workers. Most of the countertop fabricators diagnosed with silicosis in the United States were under ...

The World of European Labour on the Northern Rhodesian Copperbelt…

At the Nkana mine, for instance, management informants estimated that around 200 women attended the meeting alongside male mineworkers, and they appear to have voted on the list of demands as well. ... a more favourable negotiating procedure, and silicosis. Footnote 54 The latter was passionately upheld by all white mineworkers in the region, ...

Mini-review: Silico-tuberculosis

The effects of awareness campaigns to sensitize mine workers about their risk of silicosis and of the use of personal protective measures should also be investigated. ... Cross-sectional silica exposure measurements at two Zambian copper mines of Nkana and Mufulira. Int J Environ Res Public Health, 5 (2008), pp. 86-90, 10.3390/ijerph5020086 ...

Silicosis and Tuberculosis in Zambian Miners | Request PDF

The risk of silicosis found in this study is higher than has been found in workforce studies having no follow-up of those leaving the mining industry and in studies without job title-specific ...

Tshiamiso Trust – Compensation for silicosis and TB

The Tshiamiso Trust manages thousands of claims for mineworkers eligible for compensation due to contracting TB or silicosis from working in certain gold mines during specific periods between 12 March 1965 and 10 December 2019. …

Occupational Exposure to Silica Dust and Silicosis Risk in …

Objective: We aimed to determine recent silica dust exposure levels and assess the risk of silicosis in Chinese noncoal mines. Methods: Between May and December 2020, we conducted a retrospective cohort study on 3 noncoal mines and 1 public hospital to establish, using multivariable Cox regression analyses, prediction formulas of the silicosis ...

Cross-Sectional Silica Exposure Measurements at Two …

The measured quartz content of respirable dust showed that 59% and 26% of Mufulira and Nkana Mine samples, respectively, were above the calculated U.S. Occupational …

Tuberculosis in the mines of Zambia: A case for intervention

A cross-sectional study was conducted by Hayumbu et al. in the copper mines of Mufulira and Nkana to measure silica exposure [17]. This was part of an epidemiological study …

Preliminary review of mine air pollution in Zambia

for miners in Zambia were silicosis and tuberculosis, which have been compounded by the prevalence of HIV/ ... smelter areas like Nkana, Luanshya and Mufulira Mine areas as Smoke

(PDF) Cross-Sectional Silica Exposure Measurements at Two …

When the mean crystalline silica exposure concentration at each mine is considered, Table 2 shows that the average respirable quartz concentration is 0.143 mg/m3 (range 0 - 1.302) at …

Risk Factors Associated with Silicosis among Zambian …

Copper Mine workers with silicosis were followed up retrospectively to assess whether length of service and other risk factors are associated with developing silicosis. Nchanga, Konkola, …

Dust versus Dust: Aluminum Therapy and Silicosis in the …

By the 1930s, silicosis – a debilitating lung disease caused by the inhalation of silica dust – had reached epidemic proportions among miners in the gold-producing Porcupine region of northern Ontario. In response, industrial doctors at the McIntyre Mine began to test aluminum powder as a possible prophylactic against the effects of silica dust. In 1944, the …

Cross-Sectional Silica Exposure Measurements at Two Zambian Copper Mines of Nkana and Mufulira

We measured the quartz content of 20 bulk settled dust and 200 respirable dust samples in a cross-sectional dust exposure assessment that is part of an epidemiological study …

Managing Silicosis in the United States

In the United States, governmental regulation and reduced employment in dust-generating industries, such as manufacturing and mining, led to a decline in silicosis morbidity and mortality. 1, 2 However, recent data suggest that the prevalence of silicosis has been increasing in the United States since 2015, driven by modern industries, notably ...

Cross-Sectional Silica Exposure Measurements at Two …

The measured quartz content of respirable dust showed that 59% and 26% of Mufulira and Nkana Mine samples, respectively, were above the calculated U.S. Occupational Safety and Health Administration permissible exposure limit. ... A large burden of silicosis among older black workers in the South African goldmining industry, which is likely to ...

Silicosis, tuberculosis and silica exposure among artisanal …

Silicosis prevalence ranged from 11 to 37%, despite four of five studies reporting an average median duration of mining of <6 years. Tuberculosis prevalence was high; microbiologically confirmed disease ranged from 1.8 to 6.1% and clinical disease 3.0 to 17%. Average RCS intensity was very high (range 0.19–89.5 mg/m3) and respiratory symptoms ...

Mining and Silicosis

However, historic data from the 1990s attributes more than 23% of reported silicosis deaths to mining. On chest x-rays, r-type opacities are associated with silicosis lung pathology. Over the last four decades, …

Burden of Silicosis in the South African Mining Sector and …

Objective: The aims of this thesis were to describe silicosis trends in gold miners over three decades, and to explore the potential for diamond mine workers to develop asbestos-related diseases ...

Nkana Mine (Rokana Mine), Kitwe, Kitwe District, …

Nkana Mine (Rokana Mine), Kitwe, Kitwe District, Copperbelt Province, Zambia : A copper-cobalt mine owned by ZCCM. The deepest mine in the Zambian copper belt. Two shafts below 1,300 meters and 3 small open pits until 1984. The mine exploits reduced facies type copper-cobalt ...

Risk Factors Associated with Silicosis among Zambian Copper Mine …

For each year spent working underground, miners were 14% more likely to develop silicosis than those involved at open-pit mining. This may be attributed to better natural ventilation in the open ...

Cross-Sectional Silica Exposure Measurements at Two …

Key words: crystalline silica, silicosis, exposure, respirable dust, monitoring, mining. Introduction Adverse health outcomes associated with occupational ... (range 0 - 7.674) while Nkana Mine had 69 (68 %) samples above the LOQ and a mean respirable dust concentration of 0.868 mg/m3 (range 0 – 6.944). Although Table 2 shows

(PDF) Cross-Sectional Silica Exposure Measurements at Two …

The mean bulk dust silica content of Nkana and Mufulira Mines were 20 and 57%, respectively. At Nkana and Mufulira Mines, 102 and 101 personal dust samples were collected during eight hour shifts, respectively. The mean sampling times for Nkana and Mufulira Mines were 307 and 312 minutes, respectively.

Silicosis: An Update and Guide for Clinicians

This overview provides an update on silicosis epidemiology with review of exposures and emerging trends in acute and accelerated silicosis in the twenty-first century. The silicosis epidemics in mining, denim sandblasting, and engineering stone industries are highlighted. Clinical presentations of silicosis and silica-related conditions such as autoimmune, kidney, …