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John Frew (c1849-1899) of the Carron Co
1899 Obituary 
JOHN FREW died on August 26, 1899, at the age of fifty years. Born at Ardeer, Ayrshire, he held for some time a position of trust under the Ardeer Ironworks Company, after which he was appointed by a Glasgow syndicate furnace manager at their works in America, a position which he held for several years.
On his return to Scotland he entered the Langloan Ironworks as blast-furnace manager, and whilst at these works he invented his blast-furnace pyrometer, which has been largely adopted. About ten years ago he entered the service of the Carron Company as blast-furnace manager, a position held by him until 1892, when he was appointed general manager.
Through ill-health he was compelled, a short time before his death, to resign this position, and a movement was in progress for marking the value of his services to the Company, and the high esteem in which he was held, by the presentation of an illuminated address. The silver casket which was to contain it was received at the works on the day of his death. A large sum was subscribed for the purpose, and his untimely death occasioned deep regret among all with whom he had been connected. The works of the Carron Company were largely extended during his general managership, and a further extensive addition was in progress at the time of his death.
He was president of the Larbert Horticultural Society, and was elected a member of the Iron and Steel Institute in 1886.