JAMB - History (2012 - No. 18)
The main reason for the construction of the railway from Port-Harcourt into the hinterland was the
discovery of tin in Jos area
discovery of a deep sea harbor at Port-Harcourt
discovery of coal at Udi
need to evacuate export crops from the hinterland.
Объяснение
Coal is a very heavy mineral which cannot be carried by road transport