Abstract
THE United States Geological Survey has just issued its detailed Report on the Coal Production of the United States for the three years 1919-1921 (“Mineral Resources of the United States,” 1921, Part 2). Whilst it is no longer possible to congratulate the Geological Survey on the promptitude with which it issues these reports, it must be admitted that an exceptionally large mass of statistics is here rendered available. The recent practice is to issue mimeographed weekly reports, which are generally published within a fortnight of the period to which they refer, and to postpone the publication of the printed detailed statistics until these have been carefully compiled and collated; and it must be admitted that there is a good deal to be said for this policy.
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American and British Coal Production. Nature 113, 225–227 (1924). https://doi.org/10.1038/113225a0
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DOI: https://doi.org/10.1038/113225a0