Show ENGINEER J M CALLOW SIGNALLY HONORED the james douglas gold medal bestowed annually in reco recognition 9 of distinguished achievement in mon ferrous met metallurgy allergy was conferred upon john michael callow of salt lake city and new york at the annual meeting of the american institute of mining and metallurgical engineers recently held in new york this medal is given in commemoration of dr james douglas twice president of the institute sti tute mr callow is a well known consulting engineer and metallurgist who began his climb up tip the ladder of fame in this city during the past thirty years mr callow has designed and built a large number of the important metallurgical mills that have been b built ailt during the period incorporating in them many original ideas and devices since 1912 he lias specialized in flotation he is the originator of pneumatic flotation for the treatment of ores a method now employed by a large majority of the mining companies using the flotation process for the past thirty years mr callow has devoted his time energies el and unusual abilities to ore treatment and kindred problems with notable success and is directly responsible for many valuable improvements in the art he has been granted eighteen patents covering flotation apparatus and processes he is president of the general engineering company of new york and salt lake city |