S2
Have you eliminated the death of Matthew Watson Lee, registered with Hexham Registration District Office, in the March ( 3rd) Quarter of 1852 ?
(Shotley etc lay within the juridiction of Hexham RDO)
You ask " would there be a certificate issued ? "
After 1837 a burial could not take place without a Death Certificate, which was issued by the Register Office, after a death had been reported ( and "proved" by a doctor's "cause of death" cert.)
I know nothing about lead mines, but a death in a cold mine would just be registered with the RO, just like a " normal" death. No special cerificate.... but the mine authorities would investigate the death, from a safety etc context.
I notice that Matthew/Mary named a son Walton, as did their son ? Robert. !
Michael Dixon