Chromium is a hazardous metal available in both Trivalent (Cr +3)and Hexavalent (Cr+6) forms. Cr+6 is evidently toxic whereas Cr+3 is relatively less hazardous than Cr+6. Cr+6 and Cr+3are extensively used in many industrial ...

The GIS database is a digital representation of the real world. Any abstract of reality will contain discrepancies from its source. With traditional methods many of the problems are visible and the skilled map analyst makes ...

Remote Sensing and Geographical Information System are modem tools for ecosystem management. Remotely sensed data gives convenient and rapid solutions to problems in a variety of applications. Land is limited, and vital ...

As natures wonderful gift, several hot water springs occur in Sri Lanka though it does not fall within very active tectonic zone in the earth. They are mostly confined to the eastern sector of the island. However, hot water ...

The pinched sluice concentrator is a device for the separation of heavy minerals particularly beach sands. They come in a variety of size and shapes and have been extensively used in the beach industry, for over a century. ...

In mining, blasting is the predominant method adopted for breaking consolidated rocks with the main objectives being extraction of minerals at minimum cost with minimum damage to the environment. Explosive is a compound ...

Silo or Bin is used very widely in Mining, Processing, Pharmaceutical, Cement, Ceramics and Packaging industries. The purpose of the silo is to hold material until it is ready to use in subsequent processes such as processing, ...

Quarry metal is a widely used material in any large scale construction industry. Though demand for quarry metal substantially increased due to recently emerged large infrastructure development projects in Sri Lanka such ...

Corundum and spinel are the most prominent gem minerals found in Sri Lanka that account for more than half its gem exports. Further, Sri Lanka is a major supplier of top quality sapphire. The main objective of this study ...

Industries such as mining and industrial minerals, metallurgical, photo processing, textile, leather and chemical produce wastewater containing heavy metals that are hazardous to man and the environment. Photo processing ...