Discussion on “alternating-current motors for the economic operation of mine fans” (Crosby), Pittsburgh, Pa., April 18, 1913. (see proceedings for April, 1913)

C. W. Beers: The title of Mr. Crosby's paper is apt to convey, to my mind, something misleading. It deals with the motor side of the question and leaves out the fan side of the question, and I would like to give a few points in regard to the fan operation. I have read the article by Mr. Crosby with considerable interest, as to me much of the subject matter as presented by Mr. Crosby is new. I was somewhat disappointed, however, to note the apparently small amount of attention that he paid to fans operating in the anthracite region, which, with few exceptions, require small driving power.