The location of this work was Oshodi; a city within
the Lagos metropolitan area in the South-West of
Nigeria. It lies within latitude 60 33I N and 30 20I E and
has a bimodal rainfall pattern with the rainy season
lasting from March to November each year, and about
a two week break in the month of August. The elevation
is approximately 1500m above sea level. The soil in the
area support tropical rainforest vegetation while
Kaolinite is the main clay mineral present.