Charts showing performance of the Kelley KR9 and KR8 Rippers in various materials have been developed by Kelley Products, a division of Crutcher-Rolfs-Cummings, Inc., Houston, Tex. The guides were prepared from actual performance data related to seismic wave velocities. The tables show when a material can be ripped, is marginal or cannot be ripped, based on seismic waves recorded in velocity in feet per second. For instance, the charts reveal that sandstone that has a seismic velocity of from 2,500 to 9,000 feet per second can easily be ripped by a Kelley KR9 on a Cat D9G tractor. With a wave velocity of 9,000 to 11,000 fps, ripping feasibility would be questionable. Seismic wave velocities of more than 11,000 feet per second would signal sandstone material that could not economically be ripped.

  • Corporate Authors:

    Cummins Publishing Company

    21950 Greenfield Road
    Oak Park, MI  United States  48237
  • Publication Date: 1964-10

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00084074
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jun 10 1975 12:00AM