RE: Gem #2NAG has contracted coal mining companies like Engle Hollow for mine 1 and KMP to mine the other mines They each have their own coal mining equipment .
.Augers are one of the methods used to extract coal from high walls. Basically it is like a big drill bit entering the exposed coal seam sideways. Other types of machinery is also avail. Vist Nags home and view the CEO clip it shows high wallers in action and it also has pictures of augers at mine 1.
Here is another good link for coal buffs. It has various links to machinery, types of mines, types of coal etc:
https://www.coaleducation.org/default.htm
Hope this helps
Wallywill