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OBORTS Company, Opposite the residence of old General Mambou, Near Dragage, Bastos, Yaoundé, Cameroon
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Jun 11, 2010· The main negative ecological and biological effect of rock quarrying is the loss of habitat and the species that inhabited it. Not only through direct removal are habitats affected but they can be altered or destroyed by excess dust, water runoff, soil erosion and noise caused by quarries.
the complexities of cause and effects of human activities in karst. Although a relationship between environmental damage and quarrying of carbonate rock has been well doc-umented for over ﬁ fty years (Foose, 1953), there are only a few reports that include major discussions of the environmental impacts of quarrying in karst. These reports include
Methods of quarrying include: a) Digging – This method is used when the quarry consists of small & soft pieces of stones. b) Heating – This method is used when the natural rock bed is horizontal and small in thickness. c) Wedging –This method is used when the hard rock consists of natural fissure.
The rock surface should be properly checked for cracks and fissures. The presence of these may cause planes in the stones, along which they may split. Then, the quarrying will be easy and quick as well as economical. Layout should be prepared, which contains different stages involved in quarrying …