2DRing sample files
===================

samples.2dr
-----------
  interlock      simple, single plane blast
  SLOS A-G       sub-level open stope, rings A-G, final blast
  SLOS all       all boundary lines and holes, after import
  SLOS holes     all holes as strings
  SLOS rings     all boundary lines

String and Hole Import
----------------------
  \SLOS\holes.asc      SLOS holes, as strings (convert to holes after import)

  \SLOS\strings.asc    SLOS boundary lines (use to create ring planes, string 1 = ring A, etc.)
                 
  \DXF                 .dxf files of several rings (use DXF2XYZ to convert and import as strings)
