Voi,. 7, 1921 RESEARCH COUNCIL PUBLICATIONS 
359 
BART, chairman, Welding Research Sub-committee. Reprinted from the Bul- 
letin of the American Institute of Mining Engineers, 1919, pages 517-565. Dis- 
tributed free, postage 2 cents. 
Explosives Investigations Committee 
The hygroscopicity of tri-nitrotoluene. Report of research under the joint auspices 
of the U. S. Bureau of Mines and the National Research Council. By WiLBERT 
J. Huff. Report No. lOl-c-25, April 22, 1919. Pages 8. No copies for 
distribution. 
The preparation of hexanitro-diphenylamine from chlorobenzene. Report of research 
under the joint auspices of the U. S. Bureau of Mines and the National Research 
Council. By E. J. Hoffman and Perry A. Dame. Reprinted from the Journal 
of the American Chemical Society, June, 1919, Vol. 41, pages 1013-1020. No 
copies for distribution. 
Papers published in Professional Memoirs, Corps of Engineers, United States Army 
and Engineer Department at Large, May-June, 1919, Vol. 11, pages 259-276: 
"Adobe" shot with grade III TNT on boulder. By J. E. Tiffany. 
Report of tests to demonstrate the adaptability of grade III TNT for 
clearing land, or similar uses. By W. J. Montgomery. 
Report of shot of grade III TNT under water. By W. J. Montgomery. 
Report on breaking concrete piers with adobe shots of grade III TNT 
and 40 per cent straight nitroglycerin dynamite. By A. B. CoaTES. 
Report of tests to determine the adaptability of grade III TNT for shoot- 
ing oak stumps. By W. J. Montgomery. No copies for dis- 
tribution. 
Sensitiveness of explosives to frictional impact. Report of research under the joint 
auspices of the U. S. Bureau of Mines and the National Research Council. By 
S. P. Howeee. Technical Paper 234, 1919. Pages 17. Limited supply dis- 
tributed free, postage 1 cent. 
TNT as a blasting explosive. Report of research under the joint auspices of the U. S. 
Bureau of Mines and the National Research Council. By ChareES E. Munroe 
and Spencer P. Howeee. U. S. Department of Agriculture, Department 
Circular 94, May, 1920. Pages 24. No copies for distribution. 
Use of TNT, a war-salvaged explosive, for peace-time purposes. By John Swene- 
hart. House Document No. 720, 66th Congress, 2nd Session, April 10, 1920. 
Pages 4. No copies for distribution. 
Products of detonation of TNT. By ChareES E. Munroe and Spencer P. HowELE. 
Reprinted from the Proceedings of the American Philosophical Society, Vol. 59, 
pages 194-223. April, 1920. Limited supply distributed free, postage 2 cents. 
Notes on spontaneous explosions of nitroglycerin in oil and gas wells. By R. E. Coe- 
Lom. Reports of Investigations, Bureau of Mines, May, 1920. Pages 8. 
Limited supply distributed free, postage 2 cents. 
The cause and prevention of after-corrosion of the bores of firearms. By Wiebert 
J. Huff. Reprinted from the Journal of Industrial and Engineering Chemistry, 
Vol. 12, pages 862-870. September, 1920. Limited supply distributed free, 
postage 2 cents. 
Modified TNT as a blasting explosive. By ChareES E. Munroe and Spencer P. 
Howeee. Reprinted from Public Roads, Vol. 3, pages 27-28. October, 1920. 
Limited supply distributed free, postage 2 cents. 
