div class=ts-pagebuttonPage 1button div class=ts-image amp-img class=ts-thumb alt=Page 1: WWW Coal core description Coal structure Natural fracture description Apparent relative density True relative density Scanning electron microscope SEM X-ray Diffraction src=https:reader030vdocumentsnetreader030viewer20220408215e6aa843e46946457932e990html5thumbnails1jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 2button div class=ts-image amp-img class=ts-thumb alt=Page 2: WWW Coal core description Coal structure Natural fracture description Apparent relative density True relative density Scanning electron microscope SEM X-ray Diffraction src=https:reader030vdocumentsnetreader030viewer20220408215e6aa843e46946457932e990html5thumbnails2jpg width=142 height=106 layout=responsive amp-img divdiv