Despite being land of largest mineral concentration, huge agricultural land and large laboure force, Bihar's per capita income is one of the lowest in India. Bihar is not getting its due share from center for its minerals. All major minerals are straight under central goverment. Their head-offices are not in Bihar. It not only lessens the profit of Bihar but also reduces the chances of employment for the people of Bihar.
Next thing related to regional injustice is price differentiation.
Even the minerals found in Bihar will not be cheaper here. The price will be determine by center. That's why Bihar's market is not profitable. Former finance minister Dr. Manmohan Singh has accepted the fact but the injustice has been done already. Labour opportunity has been marred by the naxalite existence.