The first Siemens furnaces at Consett came into production in 1883.
2.
French engineer Pierre-�mile Martin was the first to take out a license for the Siemens furnace and apply it to the production of steel in 1865.
3.
Roach installed a 10-ton Siemens furnace and an 18-pot Siemens crucible furnace, allowing for the production of 18, 000 tons of steel ingots and 3, 000 tons of steel castings per annum.
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