![](/images/smile/79.jpg)
![](/images/smile/220.jpg)
![](/images/smile/36.jpg)
![](/images/smile/177.jpg)
![](/images/smile/44.jpg)
![](/images/smile/194.jpg)
![](/images/smile/169.jpg)
![](/images/smile/350.jpg)
![](/images/smile/55.jpg)
![](/images/smile/323.jpg)
![](/images/smile/104.jpg)
![](/images/smile/227.jpg)
![](/images/smile/39.jpg)
![](/images/smile/209.jpg)
![](/images/smile/76.jpg)
![](/images/smile/240.jpg)
![](/images/smile/13.jpg)
![](/images/smile/239.jpg)
![](/images/smile/57.jpg)
![](/images/smile/209.jpg)
![](/images/smile/81.jpg)
![](/images/smile/190.jpg)
![](/images/smile/107.jpg)
![](/images/smile/216.jpg)
![](/images/smile/84.jpg)
![](/images/smile/274.jpg)
![](/images/smile/24.jpg)
![](/images/smile/256.jpg)
![](/images/smile/127.jpg)
![](/images/smile/268.jpg)
![](/images/smile/43.jpg)
![](/images/smile/235.jpg)
![](/images/smile/51.jpg)
![](/images/smile/209.jpg)
![](/images/smile/138.jpg)
![](/images/smile/323.jpg)
ил уурхайн олборлолтод ямар тоног төхөөрөмж ашигладаг. English for Mining Engineers. Surface mining operation units: Drilling and Blasting / Ил уурхайн процессууд: Өрөмдлөг, тэсэлгээ Drilling The term drilling is used for smaller diameter holes, with a few exceptions such as shaft drilling and raise drilling ...
![](/images/whatsapp.png)
![](/images/smile/134.jpg)
![](/images/smile/224.jpg)
![](/images/smile/17.jpg)
![](/images/smile/252.jpg)
![](/images/smile/43.jpg)
![](/images/smile/176.jpg)
![](/images/smile/4.jpg)
![](/images/smile/192.jpg)
![](/images/smile/57.jpg)
![](/images/smile/190.jpg)
![](/images/smile/158.jpg)
![](/images/smile/225.jpg)
![](/images/smile/17.jpg)
![](/images/smile/305.jpg)
![](/images/smile/104.jpg)
![](/images/smile/344.jpg)
![](/images/smile/28.jpg)
![](/images/smile/296.jpg)
![](/images/smile/74.jpg)
![](/images/smile/283.jpg)
![](/images/smile/105.jpg)
![](/images/smile/203.jpg)
![](/images/smile/44.jpg)
![](/images/smile/211.jpg)