The file you are about to download is a self-extracting compressed file containing one or more Microsoft ExcelŽ spreadsheets containing rule of thumb cost charts prepared on the basis of models estimated according to published technical and engineering data and company reports. You accept and agree that World Mine Cost Data Exchange Inc. is not responsible for the accuracy of such information and that it makes no warranty thereto. You acknowledge that you are accepting and using files downloaded from this website at your own risk and that World Mine Cost Data Exchange Inc. is not responsible for any hardware or software problems that may arise in the course of using these files on your computer.