The full report on GPR, Ground Penetrating Radar is found here:

https://www.researchgate.net/publication/301554624_Detecting_Buried_Human_Bodies_Using_Ground-Penetrating_Radar

“Besides objects of metallic nature, buried bodies and remains are also a source of investigation for GPR techniques (Mollina et. al., 2016). Diamanti and Gianakis (2016) attempted to identify a way of GPR data usage for finding victims buried in rock fall or building collapse debris. In a similar study, Widodo et. al., (2016) utilized GPR for the identification of buried human remains in Cikutra graveyard, they found the method effective in finding buried human bodies. The results of the above mentioned studies demonstrate the applications of GPR technique in search and rescue missions and crime scene investigations. …”