IN zone-9  M9B0 line Noticed loose rocks on the top of edges workers were seen  inside the trench during aggregate back filling  and  the stand by foreman can't able to watch inside depth of the trench is max 6m. down, advised to concerned site engineer to provide bridge access in the middle of trench and monitor  and required  trimmed the loose rock and provide green net on the edges .
Hazard category: Falling objects