Misisi compound in Lusaka is characterized by artisanal small scale quarrying activities which are often dusty nature and prone to hazards. This study reports respirable dust concentration the mineralogical composition of rocks workplace. Dust sampling was carried out with help gravimetric samplers at five quarries. Respirable samples were collected during digging, chiselling, crushing, loading...

With an increase in the population and industrialization, a lot of valuable natural resources are depleted to prepare and manufacture products. However industrialization on the other hand has waste disposal issues, causing dust and environmental pollution. In this work, Aluminium Metal Matrix Composite is prepared by reinforcing 10 wt% and 20 wt% of wet grinder stone dust particles an industria...

Case 203.-Born in 1911. Started work as a carrier in 1924 for a firm loading lime, cement, tea, and sugar. In 1926 moved to work as storeman to a builder's merchant. Again exposed to lime and cement dust. From 1936 to 1964 worked principally as a plasterer. The histology of this tumour is not known. He never took snuff. Case 204.-Born in 1898. After working as a packman's boy (1910-12) and an a...

The cement composition of concrete directly affects the CO2emissions to environment. UHPC (Ultra High-Performance Concrete) is a new type rapidly gaining popularity in building industry due its superior strength and endurance. In contrast regular concrete, requires more than twice as much cement, making it expensive leaving significant carbon imprint. this study, waste was substituted with 4%, ...