Number | Name | Date | Kind |
---|---|---|---|
1642788 | Proctor | Sep 1927 | |
2780522 | Gloss et al. | Feb 1957 | |
3024086 | Ciner | Mar 1962 | |
3061541 | Henry | Oct 1962 | |
3111384 | Heckathorn et al. | Nov 1963 | |
3258308 | Peterson et al. | Jun 1966 | |
3271107 | Nickerson et al. | Sep 1966 | |
3966877 | Kalach et al. | Jun 1976 | |
4213951 | Sikdar et al. | Jul 1980 |
Entry |
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"Disposal of Liquid Wastes In By-Product Fluid Fertilizers", Barber et al., Aug. 1984. |
Barber et al., "Fluoride Recovery From Phosphorus Production", Chemical Engineering Progress, vol. 66, No. 11, Nov. 1970 pp. 56-62. |