Ground Investigation BoreholesLecture 02 Engineering Geology
#############################
Video Source: www.youtube.com/watch?v=ZATPSGhaHH4
Borehole Drilling MethodsHoles may be drilled with a great variety of commercially available rigs: methods fall mainly into three groups,dictated by the need...
відео, поділитися, камерофон, відеотелефон, безкоштовно, завантажити
#############################