The purpose of this work was to expand and improve the scope and accuracy of the method developed for the prediction of the number of workers overexposed to noise in the mining industry. A significant portion of the noise data were acquired during mine visits that took place in the course of this study. These data were obtained with time-resolved dosimeters, which among other things store a time history of the sampled noise for an 8-hour work period. The remainder of the noise data have been obtained from MSHA files and from other Bureau of Mines projects. The report reviews the prediction model, discusses the model's assumptions and approximations, describes the function of the developed software, offers typical examples on the use of the software, and includes plots of the newly acquired data records.