Patents Assigned to Advanced Blasting Technology, Inc.
  • Stemming arrangement and method for blast holes
    Patent number: 6386111
    Abstract: The present invention relates to a stemming arrangement and stemming method for use in blast holes. A rigid but deformable hollow member is located in a blast hole with its curved shape providing a clearance between opposed wall portions. A stemming material is contained within the curved portion. Detonation of the explosive deforms the hollow member outwardly into contact with the opposed wall portions of the blast hole.
    Type: Grant
    Filed: January 14, 2000
    Date of Patent: May 14, 2002
    Assignee: Advanced Blasting Technology, Inc.
    Inventor: Peter Christian Shann