Resources Contact Us Home
Method for blasting rock
T101301 Method for blasting rock
Patent Drawings:Drawing: T101301-2    Drawing: T101301-3    Drawing: T101301-4    Drawing: T101301-5    Drawing: T101301-6    
« 1 »

(5 images)

Inventor: Persson, et al.
Date Issued: December 1, 1981
Application: 06/154,420
Filed: September 2, 1979
Inventors: Holmberg; Roger (S-140 41 Sorunda, SE)
Nord; Gunnar (S-191 44 Sollentuna, SE)
Persson; Per-Anders (S-117 48 Stockholm, SE)
Primary Examiner:
Assistant Examiner:
Attorney Or Agent:
U.S. Class: 102/308
Field Of Search:
International Class:
U.S Patent Documents:
Foreign Patent Documents:
Other References:

Abstract: Method of blasting rock to attain a predetermined fracture result. The necessary energy for the blasting is provided at an amount and in an application which is decided by calculating the stresses with regard to previously plotted blasting effects and to a previously prepared description of the rock structure.
  Recently Added Patents
Circuit arrangement for a piezo transformer, and method therefor
Hypallergenic mosaic antigens and methods of making same
Hand sign
ASICs having programmable bypass of design faults
High order continuous time filter
Method, device and computer readable medium for determining whether transmission signals are present in received signals
Semiconductor unit having a power semiconductor and semiconductor apparatus using the same
  Randomly Featured Patents
Straddle type vehicle
Noncontacting electric power transfer apparatus, noncontacting signal transfer apparatus, split-type mechanical apparatus employing these transfer apparatus, and a control method for controlli
Interactive overvoltage protection device
Visual display
Catalyst yield from supported metallocene catalysts
Cold head stamped fastener inserts including marking indicia
Dry, water-soluble, substituted phenoxy and/or benzoic acid herbicidal compositions and method of preparing same
Method and apparatus for in vivo blood gas analysis
Ultra fine particle film forming method and apparatus
Chain drive