This mineral — halite — gets harvested by drilling the rock face, crushing the salt, and splintering it into pieces ... and the raw material is in abundance. The Khewra Salt Mine is the ...
The means which M. Margueritte proposes for purifying it consist simply in fusing the raw salt, and keeping it for some time in a state of tranquil fusion, decanting it into hot molds, or letting ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results