Mention three factors which have helped Jamshedpur to develop into India's major centre of steel production.

Three factors which have helped Jamshedpur to develop into India's major centre of steel production are-

1. Proximity to raw material — Jamshedpur is located close to -
   1. the iron ore deposits in Gurumahisani mines in Mayurbhanj district, Odisha and Noamundi mines in Singhbhum district, Jharkhand
   2. manganese deposits from Joda in Keonjhar district
   3. limestone, dolomite and fire clay from Sundargarh district, Odisha
   4. coal deposits in Jhari and Bokaro coalfields
2. Cheap Labour — Labour is employed from the densely populated valley of Ganga, mostly from the states of Bihar, West Bengal, Jharkhand, Chattisgarh and Uttar Pradesh.
3. Transport Facilities — Jamshedpur is well connected with roads and railways to the other parts of the country. Transport is facilitated by the Eastern Railways. It is also connected with the Kolkata port for exporting of finished steel.