(a) On an outline map of Nigeria, locate and name one area noted for each of the following:
(i) tin mining; (ii) limestone mining; (iii) thermal power station; (iv) oil refinery; (v) hydro-electric power station.
(b) Describe the method of mining tin in Nigeria
(c) State four ways in which minerals are of economic importance to Nigeria.
(b) Method of Mining Tin in Nigeria:
(i) Mined through open cast operation or method
(ii) Over burden is removed
(iii) Ore bearing rock is shattered with explosives
(iv) A"monitor" is used to wash the or sluice boxes
(v) Tin wash is scooped out and heaped with a drag line
(vi) Two concentrate is sent to market for smelting.
(c) Economic importance of minerals to Nigeria
(a) Foreign exchange earner
(b) revenue to government
(c) Raw materials for industries
(d) Employment opportunities
(e) Income to miners
(f) Manpower development
(g) Growth of towns
(h) Development of infrastructure.
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