Simulation methods of analysis, supported by increasingly powerful and user-friendly software tools, are gaining greater acceptance as an indispensable aid to business managers,engineers,andanalysts seeking productivity improvements. This paper provides an overview of simulation technology and its effective application to underground haulage system improvement, enumerates and categorizes typical application areas amenable to simulation analysis,and provides case studies as examples. Simulation modeling and analysis, long the specialized province of mathematicians and computer science specialists, has entered the mainstream of methods available to help organizations (whether business, governmental, educational, or mining) increase their efficiency and effectiveness.The proved abilities of simulation to attack a wide range of problems and investigations rest on its abilities to accommodate stochastic variation, analyze discrete or continuous variables, or both, and provide visualization via animation. Within this paper simulation study is presented as an efficient tool for analysis times and costs of underground haulage systems (railway and vehicles) that are used in processes that are characterized by a dynamic character.