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Showing 1 to 20 of 26 for “"Respirable Dust"”.
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Exploration of Respirable Dust Particles Sourced From Rock Strata in an Underground Coal Mine
Enactment of regulatory standards for respirable coal mine dust (RCMD) concentration and crystalline silica content, and advancements in mine ventilation and dust controls led to a steady decline of occupational lung disease among US coal miners between the early 1970s and the mid-1990s. Since that …
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Determination of baseline data on respirable dust concentration for safety and health enhancement in selected small and medium industries in Johor
… study that discussed the effects of exposures of dust and particle matters in industry at Malaysia especially respirable dust. This study was focus on the respirable dust concentration and their respirable health symptoms in selected industry. Three (3) case studies had been done as data …
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Evaluation and Comparison of Environmental Contaminants Present in Two Types of Swine Rearing Facilities
… environmental contaminants. Levels of total and respirable dust and endotoxin, carbon monoxide, carbon dioxide, ammonia, and temperature and percent relative humidity were measured in two types of swine rearing facilities: isolated nursery and nursery within a conventional farm. We found isolated …
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Development and Implementation of a Standard Methodology for Respirable Coal Mine Dust Characterization with Thermogravimetric Analysis
… for analysis and characterization of coal mine dust. Respirable dust has long been an industry concern due to the association of overexposure leading to the development occupational lung disease. Recent trends of increased incidence of occupational lung disease in miners, such as silicosis and …
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Relationship between cutting parameters and bit geometry in rotary cutting
… penetration force, specific energy, specific respirable dust) and the bit geometry parameters (angle of the bit tip, bit tip size and shape of the bit) in order to reduce the amount of specific respirable dust generated and the specific energy consumed in rotary cutting. In the cutting process …
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Development and Implementation of an Automated SEM-EDX Routine for Characterizing Respirable Coal Mine Dust
… microscopy routine for characterization of respirable dust particles from coal mines. Respirable dust in underground coal mining environments has long been known to pose an occupational health hazard for miners. Typically following years of exposure, coal workers' pneumoconiosis (CWP) and …
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An assessment of dust exposure levels and factors associated with the occurrence of respiratory symptoms among workers in the road construction industry in Lusaka, Zambia
Research into dust exposure in the road construction industry and the prevalence of respiratory symptoms in Zambia has not been extensively conducted despite the respiratory symptoms forming the primary burden of occupational illnesses in Zambia. The absence of literature in this industry on …
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An assessment of dust exposure levels and factors associated with the occurrence of respiratory symptoms among workers in the road construction industry in Lusaka, Zambia
Research into dust exposure in the road construction industry and the prevalence of respiratory symptoms in Zambia has not been extensively conducted despite the respiratory symptoms forming the primary burden of occupational illnesses in Zambia. The absence of literature in this industry on …
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Effect of rate of sumping on fragmentation process in laboratory rotary cutting simulator
… demonstrated that specific energy and specific respirable dust must be kept minimum to produce the optimum parameters of the rock/coal breakage process and to attain maximum sumping. There are three major elements affecting the efficiency of the cutting head namely: (1) Geometry and size of the …
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Development and Demonstration of a Standard Methodology for Respirable Coal Mine Dust Characterization Using SEM-EDX
… comprehensive method of analysis of coal mine dust. Respirable dust is specifically of interest due to its ability to cause occupational lung disease when miners are overexposed to airborne concentrations. A detailed standard methodology to characterize respirable mine dust is carefully …
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Application of a TGA Method to Estimate Coal, Carbonate, and Non-carbonate Mineral Fractions as a Proxy for the Major Sources of Respirable Coal Mine Dust
Inhalation of respirable dust in coal mines is a serious occupational health hazard which can lead to the development of chronic and irreversible lung diseases, such as Coal Worker's Pneumoconiosis (CWP) and Progressive Massive fibrosis (PMF). After the passage of the Federal Coal Mine Health and …
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An Improved Thermogravimetric Analysis Method for Respirable Coal Mine Dust and Comparison to Results by SEM-EDX
… that chronic exposures to high concentrations of respirable coal mine dust can lead to the development of lung diseases such as Coal Worker's Pneumoconiosis, commonly referred to as "black lung", and silicosis. Since the mid-1990s, an alarming resurgence of diseases has been documented in central …
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MEMS Hybrid Electronic Integration: From Micro-Robotic Actuation to Control and Monitoring of MEMS Sensor
… second project addresses the need for monitoring respirable particulate matter (PM) smaller than 4 μm, which can remain suspended in air for extended periods and is prevalent in environments such as coal mines and diesel exhaust. These particles are linked to respiratory illnesses, including Coal …
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Effects of bit geometry in multiple bit-rock interaction
… Rock/coal cutting bears directly on rock/coal dust generation that causes "black lung/silicosis" in miners. On the other hand, rock cutting generates radiance of sparks that has potential to cause face ignition. Bit wear affects productivity, safety and economy. Hundreds of face ignitions and …
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Hut lung : a study of domestically acquired pneumoconiosis in rural women
… v) or evidence of active tuberculosis. Smoke and dust levels were measured in rural dwellings during cooking and maize grinding and ground maize and grinding rocks were analysed. 25 patients were studied. 17 were non-smokers, 5 were pipe smokers and 3 smoked 10 or less cigarettes per day. 7 had …
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Demonstration of Optical Microscopy and Image Processing to Classify Respirable Coal Mine Dust Particles
Inhalation of respirable coal mine dust (RCMD) can lead to chronic lung diseases, including coal worker’s pneumoconiosis (CWP) and more severe forms such as progressive massive fibrosis. After the Federal Coal Mine Health and Safety Act was passed in 1969, limits on exposure to respirable dust were …
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Analysis of rbd palm olein abrasive blasting as new metal surface cleaning method
… dirt on the surface normally will release fine dust into the environment. Water is used with abrasive media to reduce the dust release into the environment and named as wet abrasive blasting process. However, water causes corrosion to metal surface. In this study, analysis of RBD palm olein as …
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Investigation of Coal Dust Remediation using a Surfactant in an Aqueous Solution
… most economical and popular means of combating respirable dust in an underground coal mine. Due to a noticeable increase in black lung among coal miners and new dust regulations, surfactants or wetting agents have been used to aid in dust suppression. The surfactant facilitates the wetting …
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Applications of Thermal and Laser-Based Methods for Monitoring Airborne Particulates in Coal Mines
… mines. Specifically, coal and mixed mineral mine dust, as well as, diesel particulate matter (DPM). These particulates have historically, and continue to have, significant health impacts on underground miners. Chapters 1 and 2 of this thesis concentrate on using a novel method of thermogravimetric …
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