هل ستصبح شريكنا القادم ؟
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, …
WhatsApp: +86 18221755073
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
WhatsApp: +86 18221755073
Silicosis and tuberculosis (TB) are significant mining-related illnesses in developing countries. The purpose of this study was to examine annual cases of these diseases in Zambian miners ...
WhatsApp: +86 18221755073
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 ...
WhatsApp: +86 18221755073
• 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
WhatsApp: +86 18221755073
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 …
WhatsApp: +86 18221755073
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. …
WhatsApp: +86 18221755073
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, …
WhatsApp: +86 18221755073
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 ...
WhatsApp: +86 18221755073
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
WhatsApp: +86 18221755073
An epidemic of silicosis is on-going in Rajasthan with thousands of silicosis patients diagnosed in recent past. This questionnaire-based study was conducted in two districts of Rajasthan, namely Jodhpur and Nagaur, to study the awareness of silicosis among stone mine workers, where silicosis is rampant.
WhatsApp: +86 18221755073
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 ...
WhatsApp: +86 18221755073
Silicosis is an irreversible and fatal pneumoconiosis affecting millions of workers worldwide who are exposed to silica dust [].Mining, tunneling, quarrying, sculpturing, foundries, and manufacturing of building construction materials are some of the key industries in which workers are exposed to silica dust [].Although silicosis is considered to be more prevalent in …
WhatsApp: +86 18221755073
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.
WhatsApp: +86 18221755073
The silica dust in both Nkana and Mufulira Copper Mines were above the NIOSH REL of 0.050 mg/m 3 for respirable crystalline silica. ...
WhatsApp: +86 18221755073
In Zambia, 59 and 26 % of Mufulira and Nkana mine samples were detected a b o v ... At the time of the 1930 International Labour Office Conference on silicosis in Johannesburg, mining was the main ...
WhatsApp: +86 18221755073
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 ...
WhatsApp: +86 18221755073
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 …
WhatsApp: +86 18221755073
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 ...
WhatsApp: +86 18221755073
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 …
WhatsApp: +86 18221755073
silicosis by; current age, dates of certification and discharge, , service in various mining divisions, work-sites, job categories, and mean percent silica concentration. The results showed a silicosis prevalence of 8.8percent (CI = 6.27 to 11.38).
WhatsApp: +86 18221755073
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
WhatsApp: +86 18221755073
When exposed to 0.05 mg/m 3 of respirable silica dust for 45 years, the cumulative risks in metal mines (2.3%, 9.9%, 1.5% for tungsten mines, iron and copper mines, and tin mines, respectively) were still higher than those in pottery factories (0.6%). The joint effect of silica and smoking on silicosis was more than multiplicative.
WhatsApp: +86 18221755073
Nkana Mine comprises four underground mines and several open pits, (although none of the open pits are currently operational) and surface metallurgical units as concentrators and refinery operations. Mopani Copper Mines has between 2014 and 2021 sunk and equipped brand new Syclinorium and Mindola Deeps Shafts to replace the old infrastructure ...
WhatsApp: +86 18221755073
risk factors associated with developing silicosis among Copper Mine Workers in Zambia. 5 The study had three objectives: firstly to determine miners at which work sites are at greater risk of ... service and other risk factors are associated with developing silicosis. Nchanga, Konkola, Nkana and Nampundwe business units were included in this ...
WhatsApp: +86 18221755073
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 …
WhatsApp: +86 18221755073
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 ...
WhatsApp: +86 18221755073
There is a dearth of Brazilian studies analyzing the effect of ongoing exposure to silica among former copper mine workers, as radiographic readings for silicosis have received widespread medical ...
WhatsApp: +86 18221755073
The identified occupational diseases for miners in Zambia were silicosis and tuberculosis, which have been compounded by the prevalence of HIV/AIDS. ... smelter areas like Nkana, Luanshya and ...
WhatsApp: +86 18221755073
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, Nkana and Nampundwe business units were included in this study and these have
WhatsApp: +86 18221755073
