Resource Development (AQA A Level Geography)

A resource where the quantity and grade can be estimated with confidence using inspection sites that are situated far apart. The economic viability can be confidently assessed and planned for.

A resource where the grade or quality can only be estimated on the basis of limited geological sampling. There is insufficient data to justify expenditure on exploiting the resource.

A resource where the quality and grade of the resource can be measured accurately. A preliminary feasibility study indicates that it is economically viable and extraction is justified.

A resource that has a finite supply. It is economically viable and extraction is justified. Confidence in the supply is measured by wide geological sampling.