Front Cover
U.S. Government Printing Office, 1918

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Curve showing effects of time on lead extraction and acid efficiency in leaching Wilbert tailing with acidified brine
Flowsheet of test plant
Sketch of laboratory suction filter
Proposed flow sheet for leadleaching plant
Screen analyses of materials containing lead carbonateContinued Page
Sections of HoltDern roaster
Details of laboratory roaster of HoltDern type
Results of shaft roasting of argentiferous lead carbonate ore from the Page Colorado mine
American Flag mine
Results of shaft roasting of material from Wilbert tailings dump
Christensen downdraft laboratory roaster
Results of volatilization of lead chloride from Bullionville tailing
Data on tests of material from Nevada United mine Fly Nev
Data on tests of material from Dry Valley mill dump Pioche Nev
Data on tests of material from Bingham Mines Co Bingham Utah
Data on tests of material from Hayden mill feed Clarkdale Ariz
Results of sulphidizing material from May Day mine with dry hy drogen sulphide
Results of sulphidizing material from Chief Consolidated mine with dry hydrogen sulphide
Results of sulphidizing DalyJudge carbonate ore with dry hydrogen sulphide
Results of sulphidizing ore from Shattuck mine with sodium sulp hide
Results of sulphidizing ore from Scranton mine and material from Wilbert mill dump
Results of sulphidizing material from Bullion Beck slime dump with sodium sulphide
Average results of sulphidizing miscellaneous materials
Results of sulphidizing ore from May Day mine with calcium poly sulphide
Flow sheet of proposed mill for leaching oxidized ores of lead
Flow sheet of mill for volatilization of lead
Sulphide ores of lead
Results of cyclic leaching of calcines

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Page 56 - The land upon which any building, improvement, well or structure is constructed, together with a convenient space about the same, or so much as may be required for the convenient use and occupation thereof, to be determined by the court on rendering judgment, is also subject to the lien, if at the commencement of the work, or of the furnishing of the...
Page 130 - ... writing or notice by publication in the newspaper published nearest the claim, for at least, once a week for ninety days, and if at the expiration of ninety days after such notice in writing or by publication such delinquent should fail or refuse to contribute his proportion of the expenditure required by this section, his interest in the claim shall become the property of his co-owners who have made the required expenditures.
Page 123 - An act to provide for the establishment, maintenance, and support of a bureau, to be known as the state mining bureau, and for the appointment and duties of a board of trustees, to be known as the board of trustees of the state mining bureau...
Page 130 - ... the claim or mine upon which such failure occurred shall be open to relocation, in the same manner as if no location of the same had ever been made...
Page 136 - Mining claims upon veins or lodes of quartz or other rock in place bearing gold, silver, cinnabar, lead, tin, copper, or other valuable deposits...
Page 136 - The location must be distinctly marked on the ground so that its boundaries can be readily traced. All records of mining claims hereafter made shall contain the name or names of the locators, the date of the location, and such a description of the claim or claims located by reference to some natural object or permanent monument as will identify the claim. On each claim located after the tenth day of May, eighteen hundred and seventy-two, and until a patent has been issued therefor, not less than...
Page 55 - ... and every contractor, subcontractor, architect, builder or other person having charge of the construction, alteration, addition to or repair either in whole or in part of any building, or other improvement as aforesaid shall be held to be the agent of the owner for the purposes of this chapter.
Page 196 - The attorney general, or some competent attorney appointed by him for that purpose, must prosecute such action, and the provisions of the Code of Civil Procedure relating to service of summons, pleadings, proofs, trials, and appeals are applicable to the proceedings herein provided for.
Page 107 - ... of such mine as a mode of escape from underground accident or otherwise. And all corporations, associations, owner or owners of mines, as aforesaid, working at a greater depth than three hundred feet, not having any other mode of egress than from the main shaft, shall proceed as herein provided.
Page 170 - Now, therefore, be it Resolved 'by the Assembly of the State of California (the Senate thereof concurring), That the legislature...

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