Paper Title
Application Of Queuing Theory In Analysing Shovel-Truck Haulage System In Viet Nam Surface Mine

Abstract
Haulage system in ore and waste material transportation plays an important role in most open pit mines. Queuing theory presents a promising method to account for idle time caused by trucks waiting to be served at either the loading or dumping point. This paper dealts with the analysis shovel-truck system performance using queuing model (M/M/1)in Viet Nam surface mine. The outputs of the model show relationships between truck fleet size with the length queue, waiting time in queue, shovel utilization and production. Analysis of operating costs while varying the number of truck to find out the optimized point at which the system works with minimal cost. Keywords- Haulage system, Queuing theory, trucks, shovel, optimized