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Soil heavy metal concentration patterns at two speed zones along the Gaborone-Tlokweng border post highway, Southeast Botswana
(JASEM http://www.ajol.info/index.php/jasem/article/view/43693/27216, 2006-06)
Since 1988 Botswana has been experiencing an unprecedented increase in vehicular traffic which
is suspected to be having contamination effects on soils along heavily used roads in the country. This study aimed at
understanding ...
Current impact of mining alkaline rocks on Save River water quality in Zimbabwe
(Elsevier http://www.linkinghub.elsevier.com/retrieve/pii/S1464343X09000491, 2009)
Alkaline rocks (phosphate deposits in particular) of igneous origin are currently being mined in Zimbabwe.
Exploitation of these deposits, which are associated with metals and non-metals, provides a potential
for changing ...