... fill the retort too full, give plenty of room for expansion; for, when the heat is applied, the amalgam will rise like dough in an oven, and may be forced into the discharge pipe, the consequence being a loss of amalgam or the possible bursting of the retort. Next, be careful in applying the heat, which should be done gradually, commencing at the top. This is essential to prevent waste and to turn out a good-looking cake of gold, which all battery managers like to do, ... — Getting Gold • J. C. F. Johnson
...discharge pipe is more than a hundred feet, the effect of friction is to reduce the amount of water pumped, but rams will operate successfully against a head of three or four hundred feet. The writer remembers an installation in the northern part of New ... — Rural Hygiene • Henry N. Ogden
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