/ http://www.slideshare.net/images/logo.gif / 際際滷Share feed for 際際滷shows by User: RandyPrasetyo https://cdn.slidesharecdn.com/profile-photo-RandyPrasetyo-48x48.jpg?cb=1605048340 -supervising coal quality from mining to port -supervising coal contaminant as quality problem -coal blending as buyer specification