div class=trans-pagebuttonPage 1button div class=trans-image amp-img class=trans-thumb alt=Page 1: VENTILATION of MINES - CIBSE Heritage Group · 2014-06-06 · 444 Ventilation of mines Excavation of the oldest underground mines so far discovered co 1400 BC the Negev of src=https:reader030fdocumentsusreader030viewer20220405195e780f3c9174782dd222419fhtml5thumbnails1jpg width=142 height=106 layout=responsive amp-img divpVENTILATION of MINESINTRODUCTIONp p1982pdivdiv class=trans-pagebuttonPage 2button div class=trans-image amp-img class=trans-thumb alt=Page 2: VENTILATION of MINES - CIBSE Heritage Group · 2014-06-06 · 444 Ventilation of mines Excavation of the oldest underground mines so far discovered co 1400 BC the Negev of src=https:reader030fdocumentsusreader030viewer20220405195e780f3c9174782dd222419fhtml5thumbnails2jpg 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: VENTILATION of MINES - CIBSE Heritage Group · 2014-06-06 · 444 Ventilation of mines Excavation of the oldest underground mines so far discovered co 1400 BC the Negev of src=https:reader030fdocumentsusreader030viewer20220405195e780f3c9174782dd222419fhtml5thumbnails3jpg 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: VENTILATION of MINES - CIBSE Heritage Group · 2014-06-06 · 444 Ventilation of mines Excavation of the oldest underground mines so far discovered co 1400 BC the Negev of src=https:reader030fdocumentsusreader030viewer20220405195e780f3c9174782dd222419fhtml5thumbnails4jpg 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: VENTILATION of MINES - CIBSE Heritage Group · 2014-06-06 · 444 Ventilation of mines Excavation of the oldest underground mines so far discovered co 1400 BC...