Khewra Salt Mines, the second biggest salt mine in the world, is a salt mine in Pakistan, is situated at the foothills of the Salt Range about 160 kilometers from Islamabad and 260 kilometers from Lahore in Tehsil Pind Dadan Khan District Jhelum Punjab. It attracts up to 40,000 visitors per year. Khewra Salt Mines are the oldest in the salt mining history of the sub-continent.
Salt has been mined at Khewra since 320 BC, in an underground area of about 110 sq. km.Discovery of Rock Salt dates back to days of Alexander the great. It was in the year 1872, when scientific mining operation started under the British rule. Khewra salt mine has proven reserves of 300 million tons. This reserve could not be consumed in 600 years even at the rate of 5 lakh tons production every day. Current production from the mine is around 3 lakh tons.
The mine-head buildings have 19 stories, with 11 below ground. The salt-mine is 945 feet above sea level and extends around 2,400 feet inside the earth from the mine-mouth. There are 17 working levels and the cumulative length of all tunnels is more than 40 km.Only 50% of salt is excavated from the working seam while the remaining 50% is left as pillars.
Salt occurs in the form of an irregular dome like structure. There are seven thick salt seams with a cumulative thickness of about 150 meters. At places the rock salt is 99% pure. Salt is transparent, white, pink, reddish to beef-color red. There are beautiful alternate bands of red and white color salt.
Keowra salt Mine has an easy approach via Lahore – Islamabad Motorway through Lilla Interchange or from Dina on G.T Road.
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