HMS Leviathan (1901) deck so they could be used in heavy weather. Several twelve-pounders were removed to make room for the six-inch guns. The ship's waterline armour belt had a maximum thickness of and was closed off by transverse bulkheads. The armour of the gun turrets and their barbettes was 6 inches thick while the casemate armour was 5 inches thick. The protective deck armour ranged in thickness from and the conning tower was protected by of armour. "Leviathan", named after the Biblical sea monster, was laid down by John Brown and Company at their shipyard in Clydebank on 30 November 1899. She
Leviathan Mine 5,000 tons of sulfur. Mining was suspended in 1941 due to the hazardous nature of mining sulfur underground. In 1945 the Siskon Mining Corporation, acquired the mine. Open-pit mining of sulfur was initiated at the site when Anaconda Copper Mining Company purchased the Leviathan in 1951. The extracted sulfur was used for copper ore processing at Anaconda Copper Mine (Nevada). During its excavating operations and Leviathan (1953–1962), Anaconda turned the original mine into a , pit, and removed approximately 500,000 long tons of sulfur. During this time period acid mine drainage (AMD) began contaminating Leviathan Creek. In 1963, Anaconda sold