Bill Weasley and curse breaking

[Tonks]

No: HPFGUIDX 113222

Re-reading POA, I noticed that Bill Weasley works as a curse breaker 
for Gringotts bank in Egypt. This has probably been discussed long 
ago, but I can't find anything. Why would Gringotts need a curse 
breaker?  I know that there are old Wizard tombs with curses on 
them, like old Pharos tombs. But why would Gringotts be involved 
in .. grave robbing??  Or are they working for family members trying 
to get the old family fortune out of the tombs? Can there be that 
many old dead wizards in Egypt that Gringotts needs a full time 
curse breaker?  After awhile there seem to be clues everywhere to 
God knows what. ..

Tonks_op