training and information on mining and processing of marble and limestone

Hi. Can anyone help with this enquiry from someone who contacted Practical Action? Their company mines marble, granite, travertine and limestone. They would like to know where they can get training in marble processing - including making cultured marble articles using moulds and epoxy. They also want to know how to make a "glamour coating" from their limestone.

Any suggestions gratefully received and I will pass on to the enquirer