Jharkhand Chief Minister Hemant Soren Monday launched a broadside against the BJP saying it had exploited the state during it rule during the last 20 years. Soren, who was addressing a rally here during the 'Khatiyani Johar Yatra' to mark three years of UPA government in the state, said the UPA government helmed by him has been delivering the promises made by it to ensure that benefits of government schemes reached villagers.