- 行业: Mining
 
- Number of terms: 33118
 
- Number of blossaries: 0
 
- Company Profile:
                        
 
  
                                                        The U.S. Bureau of Mines (USBM) was the primary United States Government agency conducting scientific research and disseminating information on the extraction, processing, use, and conservation of mineral resources.
Founded on May 16, 1910, through the Organic Act (Public Law 179), USBM's missions ...                             
                                                     
                        One in which only part of the severed ore is removed during stoping, the balance being temporarily available as support of workings. Used in steeply dipping lodes with strong walls.    
    
    						Industry:Mining    
									One in which rubbing surfaces are pressed together when electric current is passed through a solenoid; also, a braking system that uses magnetic attraction generated by an electromagnet as a braking force.    
    
    						Industry:Mining    
									One in which tailings are collected and settled; also, a water-storage dam.    
    
    						Industry:Mining    
									One in which the loaded screen is so suspended that it can be caused to swing or rock forward until it is abruptly checked on hitting a stop.    
    
    						Industry:Mining    
									One in which the material is not quenched immediately on coming from the solution heat-treat furnace. This allows precipitation to proceed to a point at which mechanical properties and corrosion resistance are lowered.    
    
    						Industry:Mining    
									One microhm equals 10<sub>-6</sub>Omega , which equals 10<sub>3</sub>electromagnetic units. Symbol, mu Omega .    
    
    						Industry:Mining    
									One mile (1.6 km) traversed by one train; used as a unit in railroad accounting.    
    
    						Industry:Mining    
									One nautical mile or knot equals 6,080.20 ft (1,853.248 m); 3 nmi equal 1 league; and 60 nmi equal 1 degree of longitude (at the equator).    
    
    						Industry:Mining