Discovery of Rock Salt dates back to days of Alexander the great. Thus the discovery of salt range is claimed to pre-cambrian. It was in the year 1872, when scientific mining operation started under the British rule. Prior to annexation of Punjab by the British Empire in the year 1849, the salt mines in the province were owned and operated by the Janjua Rajas, and after its annexation, the British Government took over the administration of these mines. Centuries ago, salt was take out at these mines from the out-crops of the salt seams exposed to the surface of the hill by those who were living in its vicinity. Dr. Warth, a renowned Mining Engineer of UK, laid out the main tunnel at ground level in 1872 to have an easy and direct approach to salt deposits. The new system introduced by Dr. Warth is still in-vogue