. The Locomotive. as the whole weld failed,even the head girth seams. The nature of the failure is clearly shownin Fig. 3. In connection with this ac-cident it • will not be amiss topoint out the necessity for pro-viding means for internal inspec-tion of all pressure vessels nomatter how small they may poor condition of this weldwould have been readily de-tected by such an inspection. Inaddition, as can be plainly seen in the picture and as indicated in Figure2, serious corrosion had taken place forming deep grooves parallel and adjacent to the longi-tudinal seam. This wasdue to the fac
. The Locomotive. as the whole weld failed,even the head girth seams. The nature of the failure is clearly shownin Fig. 3. In connection with this ac-cident it • will not be amiss topoint out the necessity for pro-viding means for internal inspec-tion of all pressure vessels nomatter how small they may poor condition of this weldwould have been readily de-tected by such an inspection. Inaddition, as can be plainly seen in the picture and as indicated in Figure2, serious corrosion had taken place forming deep grooves parallel and adjacent to the longi-tudinal seam. This wasdue to the fact that thetank was installed in ahorizontal position withthe seam on the this tank had re-mained in use, eventhough the weld had beengood, it is almost a fore-gone conclusion that itwould have exploded be-fore very long fromweakness due to corro-sion. Where provisionis made for internal in-spection, such dangerousconditions would mostlikely be detected andthe tanks removed from service before The old saying, Where ignorance is bliss tis folly to be wise,doesnt apply in the case of Safety First. Get wise to the dangersabout vou. —Walworth Kewanee Craftsman. iy_>5 I THE LOCOMOTIVE. 145 Silicon Alloy Which Has Saved Millions of Tons of Coal. WHEX Sir Robert A. Hadfield produced manganese steel, as re-corded in [Research] Narrative 35*, he opened an area of vastpossibilities, the field of alloy steels. He and other metallurgistspressed its exploration successfully. The world has profited these alloy steels, having remarkable properties, the progress ofMankind would have been retarded. There would be no automobiles,no airplanes. Many machines, structures and processes would havebeen impracticable. Hundreds of articles in daily use could not bemade, or would cost much more. Silicon steel, also invented by Sir Robert A. Hadfield, is a memberof this family of alloys. First produced in quantity about 1906, ithas in eighteen years saved
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