combined methods of coal exploitation

Laboratory methods for combined testing of abrasiveness ... standard methods, and the proposed new method, as well as the determination of the properties of the most abrasive coal which was used in the following wear resistance investigation (Table 1). Surface Coal Mining Methods in Australia | IntechOpen Rudrajit Mitra and Serkan Saydam (March 9th 2012). Surface Coal Mining Methods in Australia, Mining Methods Turgay Onargan, IntechOpen, DOI: 10.5772/39172. Available from: Rudrajit Mitra and Serkan Saydam (March 9th 2012). Surface Coal Mining Methods in Australia, Mining Methods Turgay Onargan ... Methods for Calculating CHP Efficiency | Combined Heat and ... Commonly accepted heating values for natural gas, coal, and diesel fuel are: 1020 Btu per cubic foot of natural gas; 10,157 Btu per pound of coal; 138,000 Btu per gallon of diesel fuel; Net useful electric output (W E). The gross electric output of the generator minus any parasitic electric losses.    Read More