Open pit mining process is mainly composed of the following elements: mining level, mining depth, the layout of the work line and advance, work to help. The determination of the mining program is a selection process of several elements.
The mining stage includes the determination of the form of the steps and the height of the steps. The general level of the level of the level of the division, the special time also has the tilt stratification. The step height depends on the height of mining mining equipment, loading (upload or Paperback) and blasting etc.. When the dip, thin thickness, grade and sandwich for a long time, in order to reduce mining loss, step height should not be too large.