在完成上述工作基础上，完成地下开采第一阶段可行性研究报告，确定可信的开

On the basis of the completion of the above work, complete the first stage feasibility study report of underground mining, determine the credible mining reserves and financial model, and submit it to the board of directors for decision.

On the basis of the above work, complete the feasibility study of the first phase of underground mining, determine credible mining reserves and financial models, and submit them to the Board of Directors for decision.

On the basis of the above work, the feasibility study report of the first stage of underground mining shall be completed, and the credible exploitation reserves and financial model shall be determined and submitted to the board of directors for decision.<br>