1- What is the role of mining engineer in open pure face and an une underground mining? 2- What is the significance of klarting operation in mining Engineer for both open Rainface and underingand? What are the reasons for reporting to two types of mining engineers? And when is the transaction done on them? 4 What is the importance of ventilation in mining enginoon? - When loosit and and when does the examination and evaluation procesie begin during the mining Precept? What are the factor 1- What is the role of mining engineer in open pure face and an une underground mining? 2- What is the significance of klarting operation in mining Engineer for both open Rainface and underingand? What are the reasons for reporting to two types of mining engineers? And when is the transaction done on them? 4 What is the importance of ventilation in mining enginoon? - When loosit and and when does the examination and evaluation procesie begin during the mining Precept? What are the factor