dumpers includes Caterpillar 785s and 789 Bs with capacities of 135 to 185 tonne. ... EX 3500 commissioned in 1991 had clocked plus 60000 hours by 1999 averaging 7032 operating hours per annum. ... Technological options ( underground mines): The present mix of manual. semimechanized and mechanized u/ g minesanbsp;...
|Title||:||International Seminar on Coal Science & Technology|
|Author||:||Kalyan Sen, Central Fuel Research Institute (India), Central Mining Research Institute (Dhanbad, India)|
|Publisher||:||Allied Publishers - 2005|