1. 1. The author is indebted to Professors A. Charnes, W. L. Garrison, and D. Marble, Northwestern University, and to Professor D. Kerr, University of Toronto, for their help, advice, and criticism . The errors are the author's.
2. The Geography of the Canadian Iron and Steel Industry
3. 5. Table 1 shows that in 1953-54 the cost of ore on iron unit basis was lowest on the east coast, but that taconite and Labrador ore were not substantially more expensive in the Great Lake centres than was Venezuelan ore on the east coast . Pittsburgh and other inland centres have always experienced higher costs so that the exhaustion of higher grade ores in the Mesabi Range did not change their position, except that ore became available from three or four sources at approximately equal costs.