Betterment briefs : a collection of published papers on organized industrial efficiency (1909)
Jacobs, Henry William, 1874- · New York : John Wiley · leaf 66
FIG. 31—TESTS 5 AND 6. TOOLS USED ON CAST IRON. ON THE RIGHT, ALLOYTOOL, AND ON THE LEFT, CARBON TOOL. NOTE BURNED CONDITION OF THE LATTERAT THE END OF A FEW MINUTES* USE.
Railroads -- Equipment and supplies · Locomotives -- Maintenance and repair · Railroads -- Repair-shops
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