Khalil et al.,(2013) described work undertaken to implement lean practices in the continuous process for Cement production in Turkey. One of the major barriers to lean implementation is providing evidence of its potential benefit to end-users. Their work aim was to overcome this obstacle by producing a tool which can be used to easily visualize the benefits of adopting lean practices without requiring disruption to the production environment. As they used process mapping, computational simulation and Taguchi method for design of experiments [16].