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Reiner Maria Daelen (1843–1905)
1843 Born the son of Reiner Daelen
1905 Obituary 
R. M. DAELEN died on August 2, 1905, after a long illness, at Baden-Baden. Son of the late Reiner Daelen, a former honorary president of the Society of German Ironmasters, he was born on August 12, 1843, at Lendersdorf, near Duren, and was educated at Horde, Dortmund, and Hagen. After a practical training in the rolling-mills of Piepenstock & Co. at Horde, he was engaged from 1868 to 1870 as metallurgical engineer at Le Creusot, an appointment which he had to relinquish on the outbreak of the war. He then entered the firm of Daelen & Burg, ironfounders, at Heerdt, and in 1877 he gave up this work in order to practise as a civil engineer. He was an active member of the Society of German Ironmasters, and read before that Society a large number of valuable papers on roll-turning, on hydraulic presses, and on other subjects connected with steel manufacture. He was elected a member of the Iron and Steel Institute in 1882, and contributed to the Proceedings papers on hydraulic cranes for ironworks in 1883, on hydraulic power in ironworks in 1901, and on recent progress in German steelworks practice in 1902.
He frequently took part in the discussions at meetings of the Institute, and as an energetic member of the reception committee of the Dusseldorf meeting in 1902 helped in no small measure to ensure the success of that meeting.