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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 .
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Objective: This study aims to determine the occupational health status of workers exposed to dust and the risk factors of lung function decline, to provide a basis for formulating corresponding occupational disease-prevention strategies. Methods: Data on 2045 workers exposed to dust, including their age, gender, exposure time, chest X-ray …
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Those who work with stone can experience serious disease and ill-health as a result of breathing in stone dust. Read more here. +44 (0) 1482 620400; info@stonegatetooling ... Stone dust can be an occupational hazard when cutting stone. Therefore it is essential to do this safely when cutting, drilling, polishing or …
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Mineral dust exposure similarly increased the incidence of chronic phlegm (RR 1.7). Occupations involving mineral dust exposure include truck and lorry drivers, and helpers/cleaners in offices, hotels and other establishments. ... For example, both environmental and occupational exposure to asbestos is a relevant health problem in …
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Three artificial stone samples (A, B, and C) and one natural granite sample were subjected to cutting and grinding in a controlled environment. Gravimetric analysis, X-Ray diffraction, and scanning electron microscopy with energy dispersive spectroscopy were employed to determine crystalline silica concentrations and particle morphology of …
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The study was conducted to determine whether the local exhaust ventilation attachment was able to control respirable dust and respirable silica exposure below occupational exposure limits. Masonry grinding. 2005. Protecting Tuckpointing Workers from Silica Dust: Draft Recommendations for a Ventilated Grinder
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Introduction: Dust is one of the chemical substances that cause occupational disease, especially among stone crafters. Its deposition for a long period can lead to various health problems, hence ...
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Background: Stone quarrying activities generate dust and fine particulate matters of silica and heavy metals. The prolonged exposure to suspended particulates leads to fatal respiratory complications.
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The symptoms evaluated in the present study were similar to those evaluated in other studies. In a study of workers exposed to free silica, Castro et al. 7 found a prevalence of respiratory symptoms similar to what was found in our study (cough in 30.5% and dyspnea in 11%), although the proportion of current or former smokers was higher (52%) in their …
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Eighty-five quartz mill stone-grinding workers belonging to the Naika, Rathwa and Damor tribes of Chhotaudepur village of the Godhra region of Gujarat, Western India were surveyed and examined to assess health effects related to free silica dust exposure. The mean age for the subjects was 28. …
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A cross-sectional study of dust exposures and health outcomes was conducted in a stone-carving company in Thailand. 147 respirable dust samples were collected and 97 subjects participated.
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Characterization of Airborne Dust Generated from the Grinding of Natural and Engineered Stone Products Drew Thompson, PhD Chaolong Qi, PhD, PE Commander, U.S. Public Health Service Division of Field Studies and Engineering Engineering and Physical Hazards Branch EPHB Report No. 2023-DFSE-1489 October 2023
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Exposure to excessive dust, working without personal protective equipment (PPE), and improper lifting and handling techniques caused one-third of injuries. Wrist …
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CDPH published resources for employers and workers to minimize exposure to silica dust when working with engineered stone during countertop fabrication. ... and has issued an occupational health alert ... Texas, and Washington since 2017. Most of the patients reported conducting tasks such as cutting and grinding engineered stone, while two ...
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Objective: To assess the impact of silicon dust on peak expiratory flow rate of stone crushers. Materials and methods: The total 125 male study accused age of 18 years and > considered, out of which 75 from stone crushers and 75 were from general population selected from Quetta district, Pakistan.
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Those cutting stone at the mines had the next highest GM (2.65 mg/m 3), while the lowest occupational exposure was seen among those chiseling stone(GM 0.9 mg/m 3). The occupational exposure to RCS ...
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Contribute to luoruoping/id development by creating an account on GitHub.
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Background: In 1997, a Monograph from the International Agency for Research on Cancer (IARC) classified occupational exposure to crystalline silica as carcinogenic to humans. Large amounts of epidemiological data have been published subsequently.Methods: We conducted a systematic review of epidemiological investigations on silica exposure and …
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For experimentation occupational dust (OD), microdust 5-8 μm (MD) and nanodust 83±31nm (ND) were exposed to A549 for 72 hr to study cytotoxicity, oxidative …
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and grinding of stone surfaces. They were only 36 and 38 years old at the time they died. About 85% of their work was with engineered stone. CASE REPORTS Wet methods and local exhaust ventilation can reduce dust exposures Photo credit: National Institute for Occupational Safety and Health SEPTEMBER 2019 STONE % SILICA Engineered …
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Introduction. In steel industry, exposure to airborne contaminants is considered a risk factor for pulmonary diseases and for occurrence of pathological changes in airways (1, 2).Suspended metals, dust, and toxic gases in steelwork may increase the risk of respiratory symptoms related to diseases such as pneumoconiosis, bronchial …
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3.1 Development of Grinding Techniques. Grinding is the most commonly used technology in abrasive machining and one of the most critical technologies for precision manufacturing difficult-to-cut alloys such as superalloys [2, 15, 31] and titanium alloys [32, 33] with high strength.It is meaningful to study and improve the sustainability …
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Grinding and pulverizing the ore is performed later in the mineral process to reduce the product down to the smaller size ranges, normally measured in mesh sizes. Grinding mills are used to perform this process and are cylindrical, horizontal drums that rotate and have rods, balls, or pebbles inside to grind the ore down to the desired size ranges.
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This study was undertaken in part to address concerns that asbestos exposures could be occurring in some crushed stone operations due to the presence of amphibole and serpentine minerals and to characterize exposures to crystalline silica and other mineral compounds. From 1979 to 1982, the National Institute for Occupational …
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Occupational health safety and ergonomic (OHS&E) concerns are most significant in many developing countries because the effect of poor health, employee safety, and non-ergonomic conditions exist ...
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Results: The mean exposure to total inhalable dust and crystalline silica among the stone carvers was 1.44 and 0.5 mg/m3, respectively. Exposure to total dust and silica was …
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Our Stone Grinding Mill mod. EPO-M1000A is equipped with strong stones whose diameter is 1000 mm. The stones are made only of natural materials agglomerated by magnesite, they are very solid and have excellent resistance to wear; unlike the classic monolithic stones, our ones do not need to be dressed, do not require maintenance and …
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Efforts to prevent COPD focus on limiting exposure to smoking. Occupational exposures are important causes of COPD, contributing to an estimated 14% of all cases and 31% of cases among never smokers. Workplace agents associated with COPD include: mineral dusts (coal mine dust, silica, asbestos), organic dusts (cotton, …
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Abstract: The risk of occupational exposure to particles of granite exists during quarrying, saw milling and construction work environment. These particles are …
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