Identifier: pacifictourist1877will (find matches)
Title: The Pacific tourist
Year: 1876 (1870s)
Authors: Williams, Henry T Shearer, Frederick E
Subjects: Union Pacific Railroad Company Central Pacific Railroad Company Railroad travel Railroad travel Railroad travel
Publisher: New York : H.T. Williams
Contributing Library: Internet Archive
Digitizing Sponsor: Internet Archive

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ven-tenths are gold, its color begins toshow. The valuable product obtained from the orewas over seventy-two per cent, of its assay valueduring the month i-eported above. It is notusual to obtain a better result than this withoutroasting the ore before amalgamation. It willinterest one, not familiar with mining, to noticehow small in both bulk and weight the bullionproduct is when compared with the amount ofore handled. During the month referred to, fourhundred and forty-six tons of ore, which wouldmake a mass 10 feet high, 20 feet wide and 30feet long, yielded only one ton of bullion, whichcould be melted into a solid cube 18 3-5 incheson a side, or 1,560 cubic feet of ore were workedto obtain one cubic foot of bullion. Itediictioii of the Ores.—The ores at thisplace are worked without roasting by the panprocess of American origin, first adopted on theComstock Lode. It is suited admirably to oreswhich work kindly, requiring little chemicalaction or heat to make them part with their
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wmm ^m€iwi€ wmwmmw. 213 precious contents, to be taken up by amalgama-tion with quicksilver. Though it rarely yieldsas close a result as the Mexican patio process,or the furnace and barrel process ot Freiberg,it is so much more expeditious and economicalof labor, and so capable of being applied on alarge scale, that, on the whole, it is unquestion-ably preferable. The other processes referred tohave been thoroughly tried in Virginia City, andfound utterly unsuited to the conditions existingthere. The first part of the process, is wet crushing ofthe ore, by stamps in iron mortars, a constantstream of water carrying oft through a brasswire screen the pulverized portion as fast as re-duced small enough. The screens are at theback of the mortar. Five stamps, weighingabout 650 pounds each, are usually placed in asingle mortar, and are lifted and dropped fromfive to eight inches about ninety times a minute.The feeder, standing in front, judges by thesound when and where to feed in the o

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