"The five per cent increase in the royalty by the Centre is not enough. It is akin to cumin in the mouth of a camel," Soren said in the presence of Prime Minister Narendra Modi.
Soren also pitched to review the mineral policy.
Later speaking after inaugurating a slew of developmental projects here, Modi said the decision to enhance royalty on iron ore would benefit Jharkhand by Rs 400 crore every year.