![]() ![]() The term dust is used for solid particles in the air and is defined as airborne particles usually in a size range of 1 to 100 μm 1. Therefore, further research is needed to investigate the efficacy of the current mass-concentration-based monitoring system.Īs an inherent byproduct of mining, dust may impose various health and safety issues in mine operations. ![]() In the end, it is demonstrated that RCMD and RCS concentrations in both surface and underground mines have decreased. Finally, thin-seam coal has greater RCMD and RCS concentrations compared to thicker seams in both underground and surface mines. Moreover, mines of small sizes show lower RCMD and higher RCS concentrations. In addition, RCMD concentration is seen to be higher in the Interior region while RCS is higher in the Appalachia region. The results of the analysis indicate higher RCMD concentration in underground compared to RCS concentration which is found to be relatively higher in surface coal mines. Hypotheses were developed for each category based on the research model and were tested using multiple linear regression analysis. Several variables were defined in four categories of interest including mine type, geographic location, mine size, and coal seam height. The total number of 12,5 observations for respirable dust concentration are included, respectively, in the U.S. In this process, all data were grouped by mine ID, and then, categories of interests were defined to conduct statistical analysis using the generalized estimating equation (GEE) model. To this end, a data management approach is performed on MSHA’s database between 19 using SQL data management. ![]() This study aimed to investigate contributing factors in RCMD and RCS dust concentrations in both surface and underground mines. The root causes of the high prevalence of respiratory diseases remain unknown. Despite considerable efforts to reduce dust exposure by decreasing the permissible exposure limits (PEL) and improving the monitoring techniques, the rate of mine workers with respiratory diseases is still high. Cumulative inhalation of respirable coal mine dust (RCMD) and respirable crystalline silica (RCS) can lead to obstructive lung diseases. Dust is an inherent byproduct of mining activities that raises notable health and safety concerns. ![]()
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