The 'Khetri mines' in Rajasthan is known for the production of _______.
Khetri Nagar is a town in Jhunjhunu district of Rajasthan in India. It is part of the Shekawati region. Khetri is actually two towns, "Khetri Town" founded by Raja Khet Singhji Nirwan and "Khetri Nagar" which is about 10 km away from Khetri. Khetri Nagar, well known for its Copper Project, was built by and is under the control of Hindustan Copper Limited, a public sector undertaking under the Government of India. Khetri Nagar is also very well known with name of 'Copper'.