Deletion of Piper Knife System

Comment: After searches, not finding coverage in reliable sources for this topic. Therefore, the topic appears to fail . This source in the article does not cover the topic: http://stbweb02.stb.sun.ac.za/urdr/downloads/Elsiesrivier.pdf ElsiesRiver Transformation Research Project
Stance: delete
Cited policy: Wikipedia:Notability (WP:GNG)