Howden Dynamite

Howden Dynamite. A mixture compounded in 1870 in San Francisco by J. Howden and consisting of NG 75 absorbed in a mixture of sugar, magnesium carbonate and potassium nitrate. This Dynamite was stronger and better than Nobel s Kieselguhr Dynamite Ref Blasters Handbook (1952), p 5 (1958)... 

J. Howden of San Francisco, Calif proposed replacing Guhrdynamite by a Dynamite consisting of NG 75 absorbed by 25 parts of a mixt consisting of pulverized sugar, K nitrate and Mg carbonate. This was known as Howden s Dynamite (Vol 5 of Encycl, p D1588-L). 

Accdg to Blasters Hdb (Ref 62, p 4), Howden s Dynamite (See under 1870), which was stronger than Guhr Dynamite, was used in construciton of Musconetcong Railroad tunnel,... 

William duPont, who succeeded Lammot as President, carried on Lammot s plans and also made Repauno the largest Dynamite plant in the US. Here, Dynamite was manufd with wood pulp as an absorbent in place of sugar used by J. Howden since 1870 in Dynamite manufd near San Francisco, Calif. Other absorbents wete K nitrate and Mg catbonate and amt of NG was 75%. Manufacture of Gelatin Dynamite began in 1893 (Ref 6, p5)... 

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