Claims
- 1. The method of entrapping dust particles in a mine working comprising coating the mine working surfaces with a first mixture consisting essentially of sodium chloride, clay and water to form a crust; then coating the formed crust with a second mixture consisting essentially of sodium chloride, water and a water soluble complex iron cyanide selected from the group consisting of alkali metal ferrocyanide salts, alkaline earth metal ferrocyanide salts, alkali metal ferricyanide salts, and alkaline earth metal ferricyanide salts.
- 2. The method of claim 1 wherein the second coating mixture is a brine solution mixture containing the water soluble complex iron cyanide.
- 3. The method of claim 2 further comprising the step of heating said brine solution before coating the crust in the presence of sufficient sodium chloride crystals to form a saturated brine solution at an above-ambient temperature.
- 4. The method of regenerating an already formed salt crust formed in a mine working comprising the step of spraying the salt crust with a saturated brine solution heated to an above-ambient temperature.
Parent Case Info
This is a division of application Ser. No. 337,964, filed Mar. 5, 1973 and now U.S. Pat. No. 3,896,039.
US Referenced Citations (2)
Number |
Name |
Date |
Kind |
873913 |
Vernon et al. |
Dec 1907 |
|
3709712 |
Rossman |
Jan 1973 |
|
Divisions (1)
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Number |
Date |
Country |
Parent |
337964 |
Mar 1973 |
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