From Minserv (Mineral Services):
Contour3DMS is a Windows program for plotting drill hole/sample maps and contour maps. A wide variety of options allow the maps to be customized to your requirements. Designed for presenting and interpreting geological field data. Contour3DMS consists of 3 integrated modules built into one application. These 3 modules are: 1. Spreadsheet Module for entering and editing data; 2. Drill Hole/Sample Plotting Module for drawing and plotting drill hole/sample maps; 3. 3D Contouring Module for plotting contour maps.