Mishra, Devi PrasadSugla, MamteshSingha, Prasun2018-12-202018-12-202013Journal of Sustainable Mining,2013,V.12(3),P.48-53https://doi.org/10.7424/jsm130306http://hdl.handle.net/123456789/1482enProductivity improvementLean manufacturingUnderground coal mineBord and pillar mining methodSide discharge loader (SDL)Lead distancePaper Non-indexedProductivity improvement in underground coal mines – a case studyArticle