(a) Draw a sketch map of Nigeria. On the map, show and name one area each where the following minerals are mined: (i) coal: (ii) crude oil; limestone. (b) D...

(a) Draw a sketch map of Nigeria. On the map, show and name one area each where the following minerals are mined: (i) coal: (ii) crude oil; limestone.

(b) Describe the process of mining coal in Nigeria.

(c) identify four problems affecting the mining industry in Nigeria.