Plastic waste disposal is a significant environmental concern due to its low degradability and management practices, especially in developing countries. recycling considered the most effective method, which minimizes impacts. This paper discusses use of poly(ethylene terephthalate) (PET), high-density polyethylene (HDPE), polypropylene (PP) plastic as aggregates concrete industry by incorporati...

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...