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John Lester Stevenson ( -1907)
1902 Designed the Non-crucible blast furnace. 
Obituary 1907 
We regret to have to announce the death of Mr. John L. Stevenson, which took place at Hammersmith on Saturday, the 9th inst., after an illness of six days.
Mr. Stevenson received his early education at Malvern College and in France.
After obtaining general engineering knowledge in London and the Midlands, he was with the Barrow Haematite Iron and Steel Company, Limited, for a period of fifteen years, three of these years being spent at the Barrow Collieries, Barnsley, where be was engineer-in-charge of the sinking and opening up of new pits.
A new Siemens-Martin steel plant in South Wales was the next work upon which he was engaged, this being during the years 1887-89. In November of the latter year Mr. Stevenson left England for the United States and acted as chief engineer to Mr. James P. Witherow, of Pittsburg. Here he was occupied in installing complete blast furnace plants. He also put down the works of the Ironton Structural Steel Company, of Duluth.
On returning to this country he acted as chief engineer to Bolckow, Vaughan and Co., Limited, of Middlesbrough, coming to London in 1900 to commence private practice. He took out several patents for inventions, these being chiefly connected with blast furnace. He also wrote a considerable amount on the same subject and much of what he wrote first appeared in The Engineer. Two of his contributions may be referred to. The first of these was entitled "The Design and Equipment of Blast Furnaces," which was published in the months of September, October, and November, 1902. The second was "Blast Furnace Calculations," which appeared in our issue of August 25th, 1905. Both of those articles were subsequently published in book form.