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James Donnithorne Thomas (1843-1900)
1900 Obituary 
JAMES DONNITHORNE THOMAS was born at Newton Abbott, Devonshire, on 31st January 1843.
In March 1870 he was engaged by Mr. John Darlington, Mining Engineer, and in conjunction with him designed and erected machinery at the Ballycorkish Mines, Isle of Man, in 1871-1872, also in the Marbella Iron Ore Co.'s mines in Spain.
In 1874-1875 he went to Norway to the Varaldso Mines, and again wont to Spain in 1877 to the Rio Tinto Mines. Of late years he was chiefly engaged in the manufacture of explosives.
His death took place at his residence in Stoke Newington, London, on 10th October 1900, in his fifty-eighth year.
He became a Member of this Institution in 1889.
1901 Obituary