Report of InvestigationsU.S. Department of the Interior, Bureau of Mines, 1919 - Mineral industries |
From inside the book
Results 1-5 of 85
Page 7
... length and the top 3 inches were cut off before testing . Larger beam samples , 6 by 6 by 30 inches , were cast into horizontal molds with tamping . Some of the larger beams were cast in one pouring and others in four lifts allowing ...
... length and the top 3 inches were cut off before testing . Larger beam samples , 6 by 6 by 30 inches , were cast into horizontal molds with tamping . Some of the larger beams were cast in one pouring and others in four lifts allowing ...
Page 13
... length - diameter ratio is constant in compression tests and ( b ) the standard deviation of the compressive strength decreases with increasing diameter ( 21 ) . [ Specific Gravity and Voids Content of Sulfur Concrete The 13.
... length - diameter ratio is constant in compression tests and ( b ) the standard deviation of the compressive strength decreases with increasing diameter ( 21 ) . [ Specific Gravity and Voids Content of Sulfur Concrete The 13.
Page 15
... length ( 6 inches ) . One group of five samples were stored in the laboratory at ambient conditions and the other group of five samples was stored in a wet room , equipped with a multiple spray head which gave a contin- ued fine mist ...
... length ( 6 inches ) . One group of five samples were stored in the laboratory at ambient conditions and the other group of five samples was stored in a wet room , equipped with a multiple spray head which gave a contin- ued fine mist ...
Page 4
... length of the stope are negligible . Stope - wall displacements are thus assumed to occur only in cross section . Preparation of a mesh of triangular elements initially representing the rock mass , and subsequently the filled stope , is ...
... length of the stope are negligible . Stope - wall displacements are thus assumed to occur only in cross section . Preparation of a mesh of triangular elements initially representing the rock mass , and subsequently the filled stope , is ...
Page 5
... the 500 n 00000 w Current- + Pressure- sensing Relay limiting resistor switch Battery pack , 30v FIGURE 2. Inflation system for emergency inflatable stoppings . · Blower , 27v dc length of time that this blower and battery pack can 5.
... the 500 n 00000 w Current- + Pressure- sensing Relay limiting resistor switch Battery pack , 30v FIGURE 2. Inflation system for emergency inflatable stoppings . · Blower , 27v dc length of time that this blower and battery pack can 5.
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aluminum bolt BuMines RI Bureau of Mines burning velocity calculated cell chloride coal coalbed combustion composition compressive strength concentration curves degasification density depth of cut determined dicyclopentadiene drilling dump leach effect electrodes Electromotive force eluate energy Engineering Library enthalpy equation experimental explosions FeCl3 flame front flame speed flotation formation gas flow Gibbs free energy H₂SO heat hole ignition ilmenite inches increase inflatable stoppings INTERIOR investigation iron iron chloride kcal kiln kpsi loading Mary Lee MBOB measured metal methane microcline mixture modified sulfur obtained oxide particles pellets percent phase PNCL pressure radius Raney nickel ratio reaction Report resin rock sample shown in figure slimes solder solution specimens steels stope sulfur concretes surface synthetic leach liquor temperature tests thick tion traveltimes tube U.S. Bureau unburned UNIVERSITY OF MICHIGAN Vacutainers values venting WALKER COUNTY zeta potential
Popular passages
Page 3 - An acid plant was installed in 1929 to treat •Underlined numbers in parentheses refer to items in the list of references at the end of this report.
Page 3 - Needless to say, this contractor did not submit a bid. "(10) (Reference to specific trade names is made for identification only and does not imply endorsement by the Bureau of Mines...
Page 10 - API, is pumped to storage. 3Reference to specific makes or models of equipment is made to facilitate understanding and does not imply endorsement by the Bureau of Mines.
Page 11 - Haynes, WP, JJ Elliott, AJ Youngblood, and AJ Forney. Operation of a Sprayed Raney Nickel Tube-wall Reactor for Production of a High-Btu Gas.
Page 34 - Prediction of Laminar Flow and Heat Transfer in Helically Coiled Pipes,
Page 9 - Kissell, FN. CM McCulloch, and CH Elder. The Direct Method of Determining Methane Content of Coalbeds for Ventilation Design.