Shaft sinking by conventional freezing method in Khalashpir coal field

Hope this book would be helpful in learning about artificial ground freezing (AGF) method in academic level as there is a paucity of informative literature on this field. We fortunately got opportunity to have some work on this method as supervisors and supervise of an MS thesis. This book based on an MS thesis is a primary work of the authors. So it is not deficient of mistakes and limitations. Comments and advice from experts on this field are highly appreciable.