Number | Name | Date | Kind |
---|---|---|---|
2609750 | McFarland | Sep 1952 | |
3001776 | Van Poollen | Sep 1961 | |
3316020 | Bergstrom | Apr 1967 | |
3434757 | Prats | Mar 1969 | |
3537753 | Arendt | Nov 1970 | |
3688843 | Nordyke | Sep 1972 | |
3714895 | Rawson | Feb 1973 | |
4043597 | French | Aug 1977 |
Number | Date | Country |
---|---|---|
1012564 | Jun 1977 | CAX |
2005659 | Aug 1971 | DEX |
Entry |
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Lang, L. C., "The Application of Spherical Charge Technology in Stope and Pillar Mining", Engineering and Mining Journal, May, 1976, pp. 98-101. |
Blakey, P. N. et al, "Kidd Creek's Innovative Blast Hole Sublevel Stoping", Mining Engineering, Jun., 1976, pp. 25-31. |
"Facts About Delay Blasting", from Du Pont Research. |
E. I. Du Pont de Nemours and Co., Blasters' Handbook; (1969), 15th Edition; pp. 220, 229, 230, 246, 247, 402, and 403. |