Notes on Lead and Copper Smelting and Copper Converting

Voorkant
Scientific Publishing Company, 1897 - 116 pagina's
 

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Pagina 68 - At this point the experiment was attended with considerable danger, for if tho pipe had given way or been attacked by the matte an explosion would certainly have occurred that would have wrecked the entire plant as well as killed the men working on the vessel. For this reason everybody kept at a respectful distance while the converter was blowing, and only approached when necessary to turn the vessel up or down. But nothing having occurred to frighten the men they gradually came to regard it as being...
Pagina 109 - Engineer, who shall be the sole judge as to the fitness of materials and shall have the right of correcting any errors or omissions in the plans and specifications when such correction is necessary for the proper fulfilment of their intention ; the action of said correction to date from that time that the engineer gives due notice thereof.
Pagina 70 - Chilian mill with one shovel of fat, sticky clay to 8, 9, or 10 shovels of quartz, according as the clay seemed to vary in plastic or binding qualities. The clay which was employed contained a somewhat large percentage of alkali earths as well as iron, and only so much of it was used as was necessary...

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