. Railway mechanical engineer . rs of atmosphere, namely,in the industrial air of Pittsburgh, Pa., the pure air of aninland district at Fort Sheridan, 111., and salt air, such asoccurs at Annapolis, Md. The results of this test have been conditions in the industry are given to aid in interpretingthe figures presented. The situation existing in 1920 is re-viewed for the country as a whole and also for the principalproducing districts and market centers. Production of bothanthracite and bituminous is given for many of the principalcompanies, as well as for the various fields and for all thestate
. Railway mechanical engineer . rs of atmosphere, namely,in the industrial air of Pittsburgh, Pa., the pure air of aninland district at Fort Sheridan, 111., and salt air, such asoccurs at Annapolis, Md. The results of this test have been conditions in the industry are given to aid in interpretingthe figures presented. The situation existing in 1920 is re-viewed for the country as a whole and also for the principalproducing districts and market centers. Production of bothanthracite and bituminous is given for many of the principalcompanies, as well as for the various fields and for all thestates. A large amount of data regarding prices is given,including quotations as early as 1834. The wage rates andthe texts of the wage awards for both bituminous and anthra-cite are quoted. The tonnage shipped over various railroadsis given, as well as the amount carried by water, the receiptat the lakes and the amount exported. In addition to thedata regarding coal, figures are given for the production andconsumption of Great Northern Railway Three-Cylinder Type Locomotive for Fast Freight Service, Designed by Doncaster Shops H. N. Gresley, Locomotive Engineer, Built 1920, The Comparison of Dimensions and Proportions of British Locomotives BY E. C. POULTNEY THE writer has dealt previously with British locomotivepractice in the columns of the Railway MechanicalEngineer, and the present article supplements the in-formation already given, and at the same time offers a fewnotes on the general subject of the comparison of locomotivedimensions. The latter part of the subject will be takenfirst, and in conclusion some brief reference will be made toBritish practice as exemplified by the various designs em-bodied in the tables of dimensions which accompany thisessay. Discussing in the first place the various factors which arerequired in order that one locomotive may be compared withanother, it is suggested that the following may be satisfactory,each being designated by the sym
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
