I have used Carlson Software (SurvCadd) since 1984. They have backed their product well over the years and have kept pace with autodesk developments. I recommend it very highly.
Load the holes as soon as possible after drilling. Adjust your air pressures to the maximum on your drills. It would help if you would drill down to 3 or 4 feet off the top of coal. This is very important, so as to not lose the energy from your blasting agent, down into the mine void. It also...
