BulletinU.S. Government Printing Office, 1918 |
From inside the book
Results 1-5 of 52
Page 15
... practically impossible to separate the particles of lead carbonate from the gangue except by fine grind- ing , with loss of lead in the slimes , and as many lead carbonate ores refuse to respond to flotation processes that are adapted ...
... practically impossible to separate the particles of lead carbonate from the gangue except by fine grind- ing , with loss of lead in the slimes , and as many lead carbonate ores refuse to respond to flotation processes that are adapted ...
Page 28
... practically coincide with this curve , and was not plotted . The percentage of efficiency of the acid when four equivalents are used is considerably lower both efficiency curves were no advantage to be gained 30 20 10 TIME , HOURS 3 20 ...
... practically coincide with this curve , and was not plotted . The percentage of efficiency of the acid when four equivalents are used is considerably lower both efficiency curves were no advantage to be gained 30 20 10 TIME , HOURS 3 20 ...
Page 30
... practically all of the chemical reactions liable to take place had been completed during the first half hour . As there are few types of modern agi- tating or leaching machinery that will receive and discharge the ore to be leached in ...
... practically all of the chemical reactions liable to take place had been completed during the first half hour . As there are few types of modern agi- tating or leaching machinery that will receive and discharge the ore to be leached in ...
Page 39
... practically the same conditions as in practice , although the operations tended to be intermittent , whereas similar machinery on a commer- cial scale could be used continuously . A more representative sample of the dump was taken than ...
... practically the same conditions as in practice , although the operations tended to be intermittent , whereas similar machinery on a commer- cial scale could be used continuously . A more representative sample of the dump was taken than ...
Page 45
... practically identical results . In a few tests calcium chloride was added to the foul solution ; calcium sulphate was precipitated . This precipitate was tested for lead and was usually found to be barren , or nearly so , hence ...
... practically identical results . In a few tests calcium chloride was added to the foul solution ; calcium sulphate was precipitated . This precipitate was tested for lead and was usually found to be barren , or nearly so , hence ...
Contents
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148 | |
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18 | |
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viii | |
32 | |
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106 | |
117 | |
130 | |
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265 | |
viii | |
2 | |
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11 | |
15 | |
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17 | |
18 | |
21 | |
34 | |
71 | |
153 | |
159 | |
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Common terms and phrases
acid act entitled amount apply assessment blasting brine Bullionville Bureau of Mines calcine calcium calcium chloride California cars cent lead charge churn drills Civil Procedure clay coal containing controlling accounts copper cost detonators drill holes dump duty dynamite employed employee entitled An act expenses explosive extraction feet flotation gold grams hydrogen sulphide injury iron labor lands Laws leaching lead carbonate lead chloride lease lessee liability licenses lien lime limestone loading March material metals method mill miner mineralogist mining bureau mining claim mining corporation negligence nitroglycerin notice obtained oil and gas operating ounces owner oxidized person plant Portland cement pounds precipitate purpose quarry record roaster roasting rock salt silica silver sodium chloride sodium sulphide soluble solution statute steam shovel stockholders sulphate sulphur supervisor tailing temperature tests thereof tion tons volatilization voucher zinc
Popular passages
Page 50 - 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 124 - ... 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 117 - 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 124 - ... 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 130 - 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 130 - 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 49 - ... 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 190 - 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 101 - ... 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 164 - Now, therefore, be it Resolved 'by the Assembly of the State of California (the Senate thereof concurring), That the legislature...