%0 Journal Article %T Optimization of the cycle time to increase productivity at Ruashi Mining %A Nday %A I.N.M. %A Thomas %A H. %J Journal of Power and Energy Engineering 电力与能源 %D 2019 %R 10.17159/2411-9717/624/2019 %K opencast mining %K cycle time %K optimization %K productivity. %U http://www.scielo.org.za/scielo.php?script=sci_arttext&pid=S2225-62532019000700007&lng=en&nrm=iso&tlng=en