gold dust associated with silica in saudi in Oman

Association between silicosis and autoimmune disease

INTRODUCTION. The association between silica exposure and autoimmune disease was first described by Bramwell in 1914, who observed scleroderma among stone masons [].Fifty years later, Erasmus found an increased incidence of systemic sclerosis (SSc) among South African gold miners, later referred to as Erasmus …

Gold deposits – where they can be found and …

That's certainly the case historically in California, Venezuela, Saudi Arabia, and Africa where I have worked. King Solomon's Ophir gold mines turned out to be 852 small ancient mines in the …

Promising use of Omani silica sand in energy storage for

MUSCAT: A key study led by Omani scientists underscores the potential for the Sultanate of Oman to capitalize on the abundance of high-quality silica sand for …

SURVEY OF QUARTZITE AND SILICA-SAND DEPOSITS IN THE …

The document presents the status report on the preliminary site survey of silica sand and quartzite deposits in the Sultanate of Oman, which was made by …

Silica and Worker Health | Silica | CDC

Silica dust can be released in the air when working. Workers exposed to RCS can develop serious lung disease. Overview. 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.

Mortality study of gold miners exposed to silica and

We have updated a study of 3,328 gold miners who worked underground for at least 1 year between 1940-1965 in South Dakota, extending the follow-up from 1977 to 1990. The exposures of concern were silica and nonasbestiform amphibole minerals. The lung cancer standardized mortality ratio (SMR) was 1.1 …

(PDF) Underground Gold Miner Exposure to Noise, Diesel …

The highest exposures for crystalline silica dust and diesel particulate matter were found in the 40–49-year-old age group.

Case Report: Exposure to Respirable Crystalline Silica and …

During mechanical processes such as crushing, cutting, drilling, or grinding of natural stone, or man-made products that contain silica, workers generate silica dust commonly referred to as respirable crystalline silica (RCS) . Silica dust particles with size from 0.01 to 100 μm in diameter are a significant health concern .

Current global perspectives on silicosis—Convergence of old …

The primary source of exposure to silica occurs in formal mining of gold, although platinum, copper, cobalt and phosphate mining also contribute. 26, 31, 33 Artisanal gold mining in the informal sector is another source. 34 Non-mining sectors include construction, manufacturing and agriculture, including well-digging. 35 High …

Tuberculosis and silica exposure in South African gold miners

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 survivor workforce and the use of cumulative exposures based on current exposures. Dust control is an important component in …

Loss of lung function associated with exposure to silica dust …

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 anal …

Full article: Silica Exposures in Artisanal Small-Scale Gold …

PURPOSE. The purpose of this investigation was to measure respirable crystalline silica exposures among workers in ASGM in Tanzania. Because small-scale gold miners lack basic personal protective equipment and generally operate without any dust controls, it is important to assess their exposures separately from workers in …

Silica Exposures in Artisanal Small-Scale Gold Mining in …

[3] The prevalence of TB among miners in Sub Saharan Africa is estimated to be between 3,000/100,000-7,000/100,000. [4][5] [6] [7] A recent report among gold miners in South Africa showed TB ...

Silicosis-Associated Tuberculosis: Management and Control

1. Introduction. Silicosis, a preventable occupational lung disease is associated with several other diseases, including tuberculosis (TB) 1.Silicosis can occur as a consequence of occupational exposure to respirable crystalline silica-containing dust 2.Although in the absence of clinically apparent silicosis, individuals who have been …

Silica Sand Supplier in Saudi Arabia | Inmaa International

Our knowledgeable team is ready to provide technical support and assistance in selecting the right Silica Sand for your specific applications. Our offerings include Silica Sand fine, which is available in sizes ranging from 0.4 to 3.0 mm, and Silica Flour, with particles in the range of 0 to 500 microns.

Risk of pulmonary tuberculosis relative to silicosis and …

Exposure to silica dust is a risk factor for the development of PTB in the absence of silicosis, even after exposure tosilica dust ends, according to a cohort of white South African gold miners followed up from 1968 to 1971. OBJECTIVES: To investigate the following questions. (1) Is silica dust on its own, without the presence of silicosis, …

IJERPH | Free Full-Text | Environmental Silica Dust Exposure …

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 …

Option 3

Full-shift sampling on job sites should be conducted to validate these findings. In the meantime, additional research will be conducted to assess the effectiveness of tool-mounted local exhaust ventilation on reducing respirable dust and crystalline silica exposures associated with the use of this powered chisel.

Environmental Silica Dust Exposure and Pulmonary …

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 …

6 Rocks That Contain Gold (How To Tell if a Rock …

Quartz is classically aligned with gold.The majority of hard rock deposits found appear to occur in quartz, and gold-in-quartz has even taken on a life of its own. The gold that appears in quartz is almost …

Biogenic silica microfossils in sediments of the Permian

Phytoliths (literally meaning 'plant stone') are composed of hydrated silica (SiO 2 with 5–15% H 2 O) and originate from the cells of higher land plants which store phytoliths in their leafs, stems, or roots (Piperno, 2006).Their size ranges from 5 to c. 250 µm. Phytoliths are important for structural shaping, nutrition, homeostasis and …

Oman Silica sands and quartz sands imports by country

Oman imports of Silica sands and quartz sands was $4,767.05K and quantity 91,389,900Kg. Oman imported Silica sands and quartz sands from Saudi Arabia …

Understanding the pathogenesis of occupational coal and silica dust …

Understanding the pathogenesis of occupational coal and silica dust-associated lung disease Eur Respir Rev. 2022 Jul 12;31(165):210250. doi: 10.1183/16000617.0250-2021. Print 2022 Sep 30. Authors ... We outline the urgency for revised dust control strategies, and the need for evidence-based identification of safe …

Hazards identified and the need for health risk assessment …

Although mining is a cornerstone of the South African economy (), it generates copious amounts of dust. 1 The dusts may be toxic since they may also be contaminated with various toxic metals.For this reason, the prevalence and severity of occupational diseases in the mining industry depends on the ores mined, the …

Lung function loss in relation to silica dust exposure in …

cumulative respirable dust exposure was associated with 18.7 ml mean excess loss in FVC [95% confidence interval (CI) 0.3, 37.1] and 16.2 ml in FEV1 (95% CI -0.3,

Engineering Controls Database

Workers with high exposure to crystalline silica include miners, sandblasters, tunnel workers, silica millers, quarry workers, foundry workers, and ceramics and glass workers Overexposure to respirable …

Underground Gold Miner Exposure to Noise, Diesel Particulate Matter and Crystalline Silica Dust

Silica sands and quartz sands in Oman | The Observatory of …

Oman imports Silica sands and quartz sands primarily from: Saudi Arabia ($4.54M), United Arab Emirates ($982k), Kuwait ($679k), India ($281k), and Belgium ($192k). The fastest growing import markets in Silica sands and quartz sands for Oman between 2021 and 2022 were Kuwait ($679k), India ($260k), and Belgium ($186k).

The association between silica exposure, silicosis and …

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]. Of other middle income countries India has approximately 11.5 million people working in silica-exposed jobs, Brazil over 2 million, while China is thought to have the largest …

Pulmonary function and respiratory health of rural farmers …

The crushing, grinding, and sifting of gold-containing ore generates dust. Crystalline silica (SiO 2) content of dust associated with some gold ore can exceed 30% (Greenberg et al., 2007), and airborne levels of crystalline silica in ASGM sites can exceed exposure limits (Gottesfeld et al., 2015). Long-term inhalation and/or high-level exposure ...