A Treatise on Practical and Theoretical Mine VentilationJ. Wiley & Sons, 1884 - 141 pages |
From inside the book
Results 1-5 of 40
Page 2
... minutes with impunity . When inhaled in large quantities , it produces a lively intoxi- cation , accompanied with violent laughter : whence it derives the name of " laughing - gas . " b , Nitric oxide , or nitrogen protoxide , may be ...
... minutes with impunity . When inhaled in large quantities , it produces a lively intoxi- cation , accompanied with violent laughter : whence it derives the name of " laughing - gas . " b , Nitric oxide , or nitrogen protoxide , may be ...
Page 22
... velocity equal to v . If this velocity be repre- sented in feet per minute , we shall have and ( 3 ) 2 = 8.0208√ × 60 = 481.2√π , v2 ( 4 ) h = = v2 ( 481.2 ) 2 — 231,600 · These formula ( 2 ) , ( 3 ) , Falling Bodies.
... velocity equal to v . If this velocity be repre- sented in feet per minute , we shall have and ( 3 ) 2 = 8.0208√ × 60 = 481.2√π , v2 ( 4 ) h = = v2 ( 481.2 ) 2 — 231,600 · These formula ( 2 ) , ( 3 ) , Falling Bodies.
Page 37
... minutes to an explosive mixture of air and lighting - gas , moving at a velocity of 4.264 ' per second , do not pass the flame through the gauze ; but , when the velocity reaches or surpasses 7.38 ' , the explo- sion is always produced ...
... minutes to an explosive mixture of air and lighting - gas , moving at a velocity of 4.264 ' per second , do not pass the flame through the gauze ; but , when the velocity reaches or surpasses 7.38 ' , the explo- sion is always produced ...
Page 48
... minute , or 0.0000000217 pound for a velocity of 1 foot per minute . We must also bear in mind , that , while we use h in the following formulas for the air - column which by its weight will produce pressure , we use 0.0217 to find the ...
... minute , or 0.0000000217 pound for a velocity of 1 foot per minute . We must also bear in mind , that , while we use h in the following formulas for the air - column which by its weight will produce pressure , we use 0.0217 to find the ...
Page 49
... minute with air at 32 ° . It is to be taken in the same terms or unit as p is taken in . rubbing - surface . v = the velocity of the air in thousandths of feet per minute , 1000 feet per minute being taken as the unit of velocity . 50 ...
... minute with air at 32 ° . It is to be taken in the same terms or unit as p is taken in . rubbing - surface . v = the velocity of the air in thousandths of feet per minute , 1000 feet per minute being taken as the unit of velocity . 50 ...
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Common terms and phrases
acres Act of Congress action adverse claim affidavit air passing air-column airway amicus curić amount anemometer application asphyxia barometer brattice circulation co-efficient Copp's Copp's Min court cubic feet cubic foot district ditch easements entry feet of air feet per minute filed fire-damp friction furnace held horse-power hundred inches issue ksv2 labor lamp land office Landowner Law Rep length lien lode claims marsh-gas ment mineral lands mining claims motive-column Mueseler lamp necessary notice owners party patent perimeter person placer claim plat possession posting pounds per square pressure per square prior public lands purchase purposes quantity of air quartz record regulations repealed resistance revolutions per minute rubbing-surface rules safety-lamp Section Sickels square feet square foot Stat statute surface survey temperature thereof tion tunnel United upcast vein or lode velocity VENTILATION volume of air water-gauge weight
Popular passages
Page xxxi - States governing their possessory title, shall have the exclusive right of possession and enjoyment of all the surface included within the lines of their locations, and of all veins, lodes, and ledges throughout their entire depth, the top or apex of which lies inside of such surface lines extended downward vertically, although such veins, lodes, or ledges may so far depart from a perpendicular in their course downward as to extend outside the vertical side lines of such surface locations.
Page xxxi - 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 one hundred dollars' worth of labor shall be performed or improvements made during each year.
Page xxxi - ... upon a failure to comply with these conditions, 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, provided that the original locators, their heirs, assigns, or legal representatives, have not resumed work upon the claim after failure and before such location.
Page xxxi - It shall be the duty of the adverse claimant, within thirty days after filing his claim, to commence proceedings in a court of competent jurisdiction, to determine the question of the right of possession, and prosecute the same with reasonable diligence to final judgment; and a failure so to do shall be a waiver of his adverse claim.
Page xxxi - Every person above the age of twenty-one years, who is a citizen of the United States...
Page 153 - 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 xxx - ... local customs or rules of miners in the several mining districts, so far as the same are applicable and not inconsistent with the laws of the United States.
Page xxxi - ... and he shall also post such notice in his office for the same period. The claimant at the time of filing this application, or at any time thereafter, within the sixty days of publication, shall file with the register a certificate of the United States surveyor general that five hundred dollars...
Page xxxi - ... survey and sale, there have been homesteads made by citizens of the United States, or persons who have declared their intention to become citizens, which homesteads have been made, improved, and used for agricultural...
Page xxxi - Whenever, by priority of possession, rights to the use of water for mining, agricultural, manufacturing or other purposes, have vested and accrued, and the same are recognized and acknowledged by the local customs, laws and the decisions of courts, the possessors and owners of such vested rights shall be maintained and protected in the same...