The document in link lists general guidelines and advises for ensuring security, both for workers and villagers, while hand dug well construction.
www.interaide.org/pratiques/sites/default/files/security_rules_and_site_management_191214_0.pdf 
Jamal, who is also hand pump technician, is working as contractor for well construction. He’s always using equipments such as helmet and harness attached to a security rope fixed on top, to go inside wells.
