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Moses Kellows (c1862-1943)
1944 Obituary 
MOSES KELLOW, whose death in his eighty-first year occurred on 26th September 1943, was a pioneer in the application of electrical power to slate quarrying and was patentee of the Kellow Rock Drill, the Kellow high-speed planer, and many other inventions. He had been a Member of the Institution since 1913 and was also a Member of the Institution of Civil Engineers, and a Fellow of the Geological Society of London.
On the completion of his general education he received his early training in mechanical and mining engineering under the direction of his father. He then became manager of the Park Mine, North Wales, and twelve years later took over the managership of the Croesor Mine. He held these joint appointments until his retirement in 1935. His activities included the management of the Kellow Rock-Drill Syndicate, formed to manufacture and exploit his rock-drill, for which patents were secured practically all over the world.
In addition he practiced as a consulting engineer, his advice being extensively sought by numerous prominent concerns. He also devoted much of his time to research in connection with the development of a high-voltage d.c. generator, and only ill health caused him to abandon his efforts. Another interest of his was the production of plastics, largely composed of slate dust, samples of which passed the severest mechanical and electrical tests. He also contributed papers to technical societies, dealing with his professional work.