coal grinding surface mines

AP 42 11.9 Western Surface Coal Mining - US EPA- coal grinding surface mines ,the surface coal mines located in the western United States. In Tables 11.9-1 and 11.9-2, the assigned quality ratings apply within the ranges of source conditions that were tested in developing the equations given in Table 11.9-3.opencast coal mining by shovel dumper and dragline ppt ...Surface or opencast coal mining: – Coal, Petroleum and other … Feb 20, 2008 · A list of major opencast mining machineries employed for coal and … surface mining . A dragline bucket … a Shovel .