The survey was based on information provided by Vi Ngoc Sieng, born in 1957 and residing in the hamlet.

According to Sieng, one grave is believed to be located on land belonging to Luong Van Bien, a resident of Chieng Ban hamlet, about 1 km from National Highway 6. Two other graves are reportedly situated side by side in the Pom Sang Soi mountain area of the hamlet, about 5 km from the highway.

According to accounts passed down by elderly villagers, the graves belong to soldiers who died during the resistance war against French colonial rule and were buried at these locations.

The team reviewed and cross-checked the information provided against relevant documents, and interviewed witnesses and the source of the information to verify the suspected grave locations.

It also conducted field surveys to identify the locations and boundaries of the suspected burial sites, assess terrain characteristics and examine related traces. Measurements were taken to determine coordinates, while maps were prepared, photographs of the current conditions were taken and survey and verification dossiers were compiled.

Following the field survey, the team recorded and demarcated two locations suspected of containing fallen soldiers' graves based on information provided by local residents.

The team will continue verifying the information, completing the relevant dossiers and propose the provincial steering committee mobilise forces to excavate and recover the remains, if any, for reburial at the Mai Son commune Martyrs' Cemetery./.