Manufacture of Steel Rails - Discussion

HENRY G. MARTIN,* Chicago Heights, 111. (written discussion?).-. The object in taking three or more ladle tests is to secure a sample that will show the average composition of the heat, not primarily to investigate the lack of uniformity existing; however, the assumption that the samples are not of uniform composition -remains. In other words, we have three samples of steel of different composition, the par-ticles of which are not subject to extreme comminution so as to mix inti-mately, and yield an average homogeneous sample, if placed in one