div class=trans-pagebuttonPage 1button div class=trans-image amp-img class=trans-thumb alt=Page 1: miningstcomminingstcomresourcesGeomechanicsGround Control inb Tankard Test: Tankard 1958 investigated crushing strengths Of coal with and without sorbed gas The drop-weight src=https:reader030fdocumentsusreader030viewer20220409025e72f2c6371f9701985e529chtml5thumbnails1jpg width=142 height=106 layout=responsive amp-img divdivdiv class=trans-pagebuttonPage 2button div class=trans-image amp-img class=trans-thumb alt=Page 2: miningstcomminingstcomresourcesGeomechanicsGround Control inb Tankard Test: Tankard 1958 investigated crushing strengths Of coal with and without sorbed gas The drop-weight src=https:reader030fdocumentsusreader030viewer20220409025e72f2c6371f9701985e529chtml5thumbnails2jpg width=142 height=106 layout=responsive amp-img divdivdiv class=trans-pagebuttonPage 3button div class=trans-image amp-img class=trans-thumb alt=Page 3: miningstcomminingstcomresourcesGeomechanicsGround Control inb Tankard Test: Tankard 1958 investigated crushing strengths Of coal with and without sorbed gas The drop-weight src=https:reader030fdocumentsusreader030viewer20220409025e72f2c6371f9701985e529chtml5thumbnails3jpg width=142 height=106 layout=responsive amp-img divdivdiv class=trans-pagebuttonPage 4button div class=trans-image amp-img class=trans-thumb alt=Page 4: miningstcomminingstcomresourcesGeomechanicsGround Control inb Tankard Test: Tankard 1958 investigated crushing strengths Of coal with and without sorbed gas The drop-weight src=https:reader030fdocumentsusreader030viewer20220409025e72f2c6371f9701985e529chtml5thumbnails4jpg width=142 height=106 layout=responsive amp-img divdivdiv class=trans-pagebuttonPage 5button div class=trans-image amp-img class=trans-thumb alt=Page 5: miningstcomminingstcomresourcesGeomechanicsGround Control inb Tankard Test: Tankard 1958 investigated crushing strengths Of coal with and without sorbed gas The drop-weight...