[WORLDKINGS] The Constant World Records Seeking Journey (P.107) Sifto Salt Mine – World's largest underground salt mine

23-02-2021

(WorldKings.org) The Sifto Salt Mine produces over 7 million tons of rock salt annually, which is enough to meet the demand in the Great Lakes region. Stretching over 1.5 miles wide, 2 miles long, and covering an area of 2.7 million squares miles, World Records Union (WorldKings) officially declared Sifto Salt Mine as "World's largest underground salt mine ".