Occupational exposure to respirable crystalline silica (RCS) is common in a range of industries, including mining, and has been associated with adverse health effects such as silicosis, lung cancer, and non-malignant respiratory diseases. This study used ...
Consequently, millions of individuals are at risk of silica-associated disease. In South Africa between 1973 and 2013 an estimated minimum 1.2 million workers passed through the gold mining industry with its high silica dust exposures [ 1, 2 ].
Occupational exposure is an important risk factor for chronic obstructive pulmonary disease (COPD), and silica dust is one of the most important occupational respiratory toxins. Epidemiological and pathological studies suggest that silica dust exposure can lead to COPD, even in the absence of radiological signs of silicosis, and that the association …
Background: A nested case-control study for lung cancer was performed on a cohort of 2260 South African gold miners in whom an association between exposure to silica dust and risk of lung cancer was previously reported. The objective was to investigate an expanded set of risk factors and also cancer cell type.
The final rule lowers the permissible exposure limit of respirable crystalline silica to 50 micrograms per cubic meter of air for a full-shift exposure.
Drillers and winch operators had the highest PTB prevalences and the highest dust and silica exposures. Conclusion: Older in-service gold miners in South Africa have a high prevalence of PTB, which is significantly associated with dust and silica exposure, even in the absence of silicosis. Limitations include a
The data from a lung function study on 2209 white 45-54 year old South African gold miners in 1968-71 and at a five year follow up examination, were analysed to establish the actual loss of lung function associated with exposure to silica dust and with smoking. Ex-smokers were excluded from the analysis.
Abstract. Despite silica dust exposure being one of the earliest recognized causes of lung disease, Australia, USA, Israel, Turkey and other countries around the world have recently experienced ...
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Background: Crystalline silica and asbestos are common minerals that occur throughout South Africa, exposure to either causes respiratory disease. Most studies on silicosis in South Africa have been cross-sectional and long-term trends have not been reported. Although much research has been conducted on the health effects of silica dust and …
Background Respirable dust, diesel particulate matter, crystalline silica and noise pollution are the most common causes of health issues experienced by underground mine workers.
Three gold mine dust samples were aerosolized in a laboratory chamber. Particle size-specific samples were collected for gravimetric analysis and for quantification of silica using the Microorifice Uniform Deposit Impactor (MOUDI).
Hnizdo E, Murray J. Risk of pulmonary tuberculosis relative to silicosis and exposure to silica dust in South African gold miners [published erratum appears in Occup Environ Med 1999 Mar;56 (3):215–6].
Upon inhalation of coal dust, the respirable portion of PM, along with silica, especially quartz and associated contaminants, penetrates the lung parenchyma and passageways.
Silica dust hazards in large gold mines have been well documented, but the situation is far worse in small-scale gold mining according to a new study. This is the first ever study to …
The final rule lowers the permissible exposure limit of respirable crystalline silica to 50 micrograms per cubic meter of air for a full-shift exposure.
The author examined the literature for other novel silica-related health risks. Results Current workers and their managers seem to not have sufficient awareness of the …
Background: Occupational crystalline silica dust exposure is associated with an elevated risk of pulmonary tuberculosis (PTB). However, there is less evidence for an association with environmental silica dust exposure. Methods: A cross-sectional study of 310 participants was conducted in an exposed community living within 2 km of gold …
These workers inhale dust particles like gases, fumes, silica particles, organic dusts, and inorganic dusts which are risk factors in developing pneumoconiosis. 1 Crystalline silica particles are ...
This Code provides practical guidance for persons conducting a business or undertaking on how to manage risks associated with respirable crystalline silica (RCS) exposure in construction work and manufacturing of construction elements.
Silica is the most abundant mineral in the earth's crust. Unfortunately, breathing in silica dust caused by chipping, cutting, drilling, or grinding soil, granite, slate, sandstone or other natural materials can lead to chronic lung disease.
The current study evaluated the contamination level of potentially toxic elements (PTEs) and their associated risk in street dust in the vicinity of Mahd Ad Dhahab gold mine, …
A smart antibacterial mixed-membrane coating consisting of lysozyme@gold nanoclusters-coated mesoporous silica nanoparticles encapsulating antibacterial agents in an amphiphilic polymer matrix is described by Niveen M. Khashab and co-workers in article number 1601135.
Environmental exposure to crystalline silica is a well-known occupational hazard among those involved in stone quarrying, mining, and sand blasting, and continuous exposure is associated with an increased risk for a variety of silica-related diseases [ 1, 3 ]. Silicosis is an inflammatory lung disease that results from inhalation and retention of …
Silica dust is made up of small particles that can become airborne during work activities with materials that contain silica. Particles that are small enough to be inhaled deep into the lungs are called respirable. Crystalline silica is typically found in: The most common form of crystalline silica is quartz.
The data from a lung function study on 2209 white 45-54 year old South African gold miners in 1968-71 and at a five year follow up examination, were analysed to establish the actual loss of lung function associated with exposure to silica dust and with smoking. Ex-smokers were excluded from the analysis. Of the remaining 1625 subjects, 1249 had the …
Background Respirable dust, diesel particulate matter, crystalline silica and noise pollution are the most common causes of health issues experienced by underground mine workers. Assessment of ...
Purpose of review: There is a considerable burden of silica-associated lung diseases in the developing world. This review summarizes the epidemiology of these diseases, especially silicosis and silico-tuberculosis, mitigative efforts and treatment, especially in the context of developing countries.
Monitoring worker exposure to respirable crystalline silica in dusty environments is an important part of a proactive health and safety program. This is the case for surface copper mines in Arizona and New Mexico. The spatial and temporal variability of respirable dust and crystalline silica concentrations in those mines, coupled with the time ...
The data from a lung function study on 2209 white 45-54 year old South African gold miners in 1968-71 and at a five year follow up examination, were analysed to establish the actual loss of lung function associated with exposure to silica dust and with smoking.
Background: Among other minerals, South Africa has an abundance of asbestos and crystalline silica. Due to dust particles from these minerals, exposure causes respiratory diseases in particular ...
