Hal.Evans many years after leaving the pit. There were two men to operate a Siscol cutter at the coal face, as we had to cut the layer of stone out of the coal,which was comprised of a top layer of ...

Scientific American is part of Springer Nature, which owns or has commercial relations with thousands of scientific publications (many of them can be found at www ...

Engineers are developing a new generation of robotic mining equipment to cut the cost of extracting coal and to make more seams of the fuel economically viable as China tries to produce enough energy ...

At the upcoming Bluefield Coal Show, Caterpillar and regional Cat ® dealers are presenting the extensive line of Cat underground coal mining and utility machines as well as the customer support ...