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Best Coal Mine Roof Rock Fall After Pillaring



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Coal is the official state mineral of Kentucky.


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About: Best Coal Mine Roof Rock Fall After Pillaring


The coal mine i work in over here in australia has a 10m thick coal seam, our longwall is a 400m long caterpillar chock system. Similar but different mining technique to you guys over their
Been a long time since i helped do this. Thanks for posting..it brings back many memories!
i have worked in the mines for 5 years but never a long wall section but there is a place near where i live that repair long wall jacks and i have never seen any that look like those do but why do you have long wall jacks on a pillar section anyway they would take a scoop to move them seems like a waste of time to me why not just use timbers....and you need the roof to fall in in the mined out sections if not the weight will ride to the outside and make the mine unsafe as hell and i cant explain why but at the end of pillar removal you set a double row of timbers and the top will never fall past the first row of timbers its cool as hell to watch it fall and is scary as hell at first but you get used to it after a while nice video by the way
I miss the sound of props cracking and watchin the juice get squeezed out of the wedges and roof bolts flying out of the roof. Sometimes I dream of being chased by cave ins. Scary.
i'm opening a small coal/iron mine (about 4 feet wide and 6 feet tall) to i need to pillar it after i am done mining?
That's it? only kidding
Why are you allowing the roof to collapse and not keep it pillard. ? I thought that long wall mining does all of the hydraulic pillaring and collapses behind it self.
She's workin.
I appreciate you guys watching. This was in Appalachia, Virginia... an Alpha Natural Resources Mine, at the time. They have since bankrupted and laid all of us off.
BADASS!!!!!!!


Coal stock


Coal is extracted from the ground by coal mining, either underground by shaft mining, or at ground level by open pit mining extraction.

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Coal is primarily used as a solid fuel to produce electricity and heat through combustion. World coal consumption was about 7.25 billion tonnes in 2010 The price of coal increased from around $30.00 per short ton in 2000 to around $150.00 per short ton as of September 2008. In early 2015, it was trading near $56/ton.