52 years after West Virginia coeds found decapitated, investigators hope high-tech "X-Ray machine" help will locate final evidence

Leaving no stone unturned at a 52-year-old, once-and-former crime scene isn't easy.

Not when investigators have to do their digging mainly by hand, so as not to disturb any evidence that still may be lurking in the soil.

Armed with garden trowels and toothbrushes, West Virginia State Police forensic investigators and others have been doing just that in earnest for the past several weeks at a wooded, rural expanse near Morgantown.