Under the circumstance that deep mining is increasingly vulnerable to underlying limestone water, accurate detection of floor failure depth ranges at a mining f
<span style="font-family:;" "=""><span style="font-family:Verdana;">Tana River Delta is occupied predominantly by pastoral and farming communities that inhabit
<span style="font-family:""><span style="font-family:Verdana;">Water resource is an important supporting material for life support system and eco</span><span st