as the mass cools, each of the they are emptied, boiled out with fresh water, and cleaned. One of the pans is run during the day and ingredients (sulphur, phosphorus, silicon, manganese, the other during the night, each pan making in a etc.) tends to flow toward the central and upper por- twelve… … saving of labor by the use of the compressed-air drill interior was yet relatively cold would further increase water pump ; L, elevator; NV, brine pump; R, brine settler; S, brine tank ; 7, water tank ; U, brine vat; V, drainage bin. is shown by the fact that sufficient salt can be under- the heavy…
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