This study assessed the reduction in forced vital capacity of lungs of sand stone quarry workers exposed to high respirable suspended particulate concentration. The sand stone quarry workers are engaged in different type of activities like drilling, loading and dressing. These different working places have different concentration of RSPM and these workers are exposed to different concentration ...

It should be kept in mind that the key component of all the polarimeters and saccharimeters mentioned in this account is a pair of Nicol prisms. These were always made from crystals of Iceland spar (optical calcite). The crystals were mostly obtained from a single quarry in East Iceland from before 1800 up to the early 1920s, and to a minor extent from another quarry in Southeast Iceland from 1...

This study aimed to develop an eco-friendly, lightweight, and synthetic aggregate (SLA) based on clay suitable for use in structural lightweight concrete. The researchers utilized the cold-bonded pelletization process agglomerate pozzolanic materials, specifically attapulgite extracted from a quarry, crushed into fine filler. appropriate calcination temperature manufacturing this as material is...

The purpose of this study is to measure the size distribution of blasted rock using the digital image processing software “SplitDesktop system” in order to evaluate the efficiency of blasting operation. Site of study is a limestone quarry producing limestone for cement manufacturing. Fragmentation is the ultimate measure of efficiency of any production blasting operations. The degree of fragmen...