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When I worked on a longwall and we wanted to go back to the headgate, we would ride the face conveyor chain. Safe??? It was way faster than walking!! Note, the phones would be quiet all shift long. T/hen the longwall would go down. And everyone would be on the phones asking for how long. Everyone!!!!! When the armored chain on the face conveyor broke it was a pain!! But you just deal with it. A modern coal mining beast of a machine.... Many companies use them these days, many......
Nice vid but watching people leaning up against AFC and turning back on face is a worry not to mention the fella stringlining behind shearer with no dust mask👎🏾 we used to do our stringlining on T/G run to keep out of dust. Now it’s all automated.
This video lacked any explanation of just what was going on. It should have been pretty obvious what the rotating machine was doing. It was breaking the coal in the coal seam and dumping it onto a conveyer belt for transport out of that part of the mine. However, it might not be so obvious what those big hydraulic components that kept moving forward were doing. They are holding up the roof of the mine in the area where the long wall machine is working. Thus, they protect the men and machines from a collapse as they remove the coal. As the longwall machine takes out the coal, the supports move the conveyor and roof supports with it. The resulting cavern is then simply allowed to collapse behind the machines as the move. I got to actually watch one of these in action on a field trip to a coal mine when I was a college student.
So what happens when the coal seam is thicker than the shearer or hydraulic roof jacks can handle? (by a large margin 50% or better) Is there any sort of alternative mining process employed or is the coal that can't be taken with a pass of the shearer simply sacrificed? Is there any sort of audit to see how thick the seam is above/below the face at any point in time to see how much is being left behind? I can see where longwall does extract more coal than room and pillar. How efficient is open pit? when does it make more sense to do open pit vs. underground?
Depends on the size and depth of the seem whether they make it underground bc having too big of a open cut pit isn’t ideal so underground would be cheaper and more eco friendly. And if the seem is too thick for the equipment they’ll either buy bigger stuff or just split the seem in two horizontally and cut it at the same time with two shearer’s at different levels at a staggered pace or just do two runs of the seem with 1 shearer. Only the stuff that’s too expensive to collect is left behind such as the pillars between travel roads and driveheads.
Is there any warning signal when the feet things start to move or is it up to the workers to know how the machine operates & be aware of what will move & when?
Hello, it's great, but I'm always interested how do you find and train people to become a big construction company, it'd be interesting to hear this company's experience.
One of my buddies nearly got killed a couple months ago when the shield canopy (the big metal thing holding up the roof) fell on him. He’s pretty messed up but still alive.
Meanwhile baristas in their senior year of high school making more money than these guys... this is very cool and I salute the men and women doing these jobs.
I work on the long wall in an underground coal mine in the US. I make $38 an hour. I don’t know about you, but I’ve never heard of a barista making 6 figures. 😂
While the longwall revolutionized coal mining, over the long run it's also killed the industry. One by one, mines began to shut down once it was realized and reconfirmed over and over the amount of coal a single longwall could mine in a single shift... and that's taking move time and lead days into account as well.... they realized there was no longer a need to keep several different mines open. So they just shut them down and consolidated their assigned portions of coal into one single region to be mined by 1 or even 2 longwall systems, hence, the concept of the "mining supercomplex" with Bailey and Enlow being among the first ones to set the stage...
