QUESTION $2.$

a$).$ The data contained in Table $2$ are the experimental semi$-$variograms values found for copper

grades of $10$ m drill core samples. Plot the semi$-$variogram for only the east$-$west data on the

graph sheet provided

i$.$ Fit theoretical model to experimental semi$-$variogram.

ii$.$ Determine the sill, range and nugget effect from the fitted model

b$).$ Briefly explain the following terms;

i$.$ Proven resource

ii$.$ Probable resource

iii. Indicated reserve

iv$.$ Measured reserve

v$.$ Inferred reserve