What diplomas would be interesting for employers in gold mining?

[L'Assimil'tou]

And by the way, what kind of job (and so what diploma?) would be the less dangerous for the health?

I'm not an English natve speaker so I don't think I could get a job in answering call.

When I'm talking about diplomas, I mean diplomas as licence to drive certain type of engin for example. It's too late for me to study engineering.