- 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 ...                             
                                                     
                        Means of fastening an explosive charge in a seismic shot hole to allow several charges to be preloaded. At each stage the bottom charges are fired first, the upper charges being held down by anchors.    
    
    						Industry:Mining    
									Means whereby walls are braced either vertically or horizontally by columns, pilasters, or crosswalls, or by floor or roof constructions, respectively.    
    
    						Industry:Mining    
									Measurement in inches of taper or slope for a 1-ft (0.3-m) length of the threaded section of rod or pipe.    
    
    						Industry:Mining    
									Measurement of geologic time by geochronologic methods, esp. radiometric dating. Compare: geochronology    
    
    						Industry:Mining    
									Measurement of soil or rock after it has been loosened by digging or blasting.    
    
    						Industry:Mining    
									Measurement of soil or rock after it has been placed and compacted in a fill.    
    
    						Industry:Mining    
									Measurement of the amount of suspended or slow-settling matter in a liquid; the measurement of the decrease in intensity of a light beam passed through a medium. Compare: nephelometry    
    
    						Industry:Mining    
									Measurement of three-angled figures, or measurement by use of three-angled figures.    
    
    						Industry:Mining