Report of InvestigationsU.S. Department of the Interior, Bureau of Mines, 1919 - Mineral industries |
From inside the book
Results 1-5 of 91
Page 1
... Present results show that modified sulfur concretes are superior to unmodified sulfur concretes and equal or better than Portland concretes in compressive , flexural , and tensile strengths . Long - term aging characteristics of both ...
... Present results show that modified sulfur concretes are superior to unmodified sulfur concretes and equal or better than Portland concretes in compressive , flexural , and tensile strengths . Long - term aging characteristics of both ...
Page 2
... present day situation existed at the end of the war . At that time , Bacon and Davis reported on projected use of sulfur in the construction industry ( 2 ) . They found that many additives had been suggested to modify the sulfur to ...
... present day situation existed at the end of the war . At that time , Bacon and Davis reported on projected use of sulfur in the construction industry ( 2 ) . They found that many additives had been suggested to modify the sulfur to ...
Page 11
... present as stringers . is presumed to be a sulfur - organic compound . The left photo is of desert sand bonded with sulfur which was modified by reaction with 2 pct dipentene . A mixture of noncrystalline and crystalline sulfur is present ...
... present as stringers . is presumed to be a sulfur - organic compound . The left photo is of desert sand bonded with sulfur which was modified by reaction with 2 pct dipentene . A mixture of noncrystalline and crystalline sulfur is present ...
Page 14
... present as discreet bubbles in the binder rather than void layers between pieces of aggregate from nonwetting of the aggregate . The discreet bubbles present in the modified sulfur concretes may act as a stress relief agent in the ...
... present as discreet bubbles in the binder rather than void layers between pieces of aggregate from nonwetting of the aggregate . The discreet bubbles present in the modified sulfur concretes may act as a stress relief agent in the ...
Page 1
... presents the results of comparisons between predictions and field measurements of support performance of hydraulic backfill at two mines in the Coeur d'Alene mining district of northern Idaho . In addition , guide- lines are presented ...
... presents the results of comparisons between predictions and field measurements of support performance of hydraulic backfill at two mines in the Coeur d'Alene mining district of northern Idaho . In addition , guide- lines are presented ...
Common terms and phrases
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.