![](http://www.alamy.com/thumbs/6/AD0475EE-79AB-4A9C-98F8-F1BD165190D8/2AFP7PE.jpg)
. Transactions. 3 •<* ^ S 7 S TIME IN HOURS TIME IN HOURS III i~rrT~ryLl-T—f^-h-t--^^-|—^. 3 ** S C 7 STIME IN HOURS s ^ ^ s e 7 sTIME IN HOURS 404 COMMERCIAL CAKBONIZING-MATERIALS. Table XXI.—Material 0. 1,600° F. ^ .s Ke Depth of Carbon. 1^ ^o Over Per Cent. Cent. to Per Cent. to Per Cent. Total. 1 Grams. Per , 1 nan Inches. 2 3 4 5
. Transactions. 3 •<* ^ S 7 S TIME IN HOURS TIME IN HOURS III i~rrT~ryLl-T—f^-h-t--^^-|—^. 3 ** S C 7 STIME IN HOURS s ^ ^ s e 7 sTIME IN HOURS 404 COMMERCIAL CAKBONIZING-MATERIALS. Table XXI.—Material 0. 1,600° F. ^ .s Ke Depth of Carbon. 1^ ^o Over Per Cent. Cent. to Per Cent. to Per Cent. Total. 1 Grams. Per , 1 nan Inches. 2 3 4 5 6 7 8 9 1 ; 1,750° F. 10 ? 1 ,
Size: 1910px × 1308px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bo, bookcentury1800, bookdecade1870, booksubjectmineralindustries