DR. MASON REPLIES.

The article presents the author's reply to comments on the paper regarding the process of concentrating iron ore by mechanical means near the mine rather than, as in the past, by chemical means in the blast furnace only. The research on the subject is based upon field and working experience in the industry and the objective was to convey accurately and clearly fact and realities relevant to understanding of the subject of iron. Room certainly exists for energy mass budget study in economic geography, but such investigation must proceed within some realistic context, and must be based upon fundamental knowledge.