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Updated: June 1, 2025
Martien was probably never a serious contender for the honor of discovering the atmospheric process of making steel. In the present state of the record, it is not an unreasonable assumption that his patent was never seriously exploited and that the Ebbw Vale Iron Works hoped to use it, in conjunction with the Mushet patents, to upset Bessemer's patents.
This fact must be added to our knowledge that Mushet's patent of September 22, 1856 was drawn up with a specific reference to the application of his "triple compound" to "iron ... purified by the action of air, in the manner invented by Joseph Gilbert Martien," and that this and his other manganese patents were under the effective control of Ebbw Vale.
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