Dilution skins for narrow vein mining

A: I work with underground mines, so my comments are restricted to that environment. For underground mines that have a fuzzy gradational contact you need to know where the dilution is coming from, so blithely expanding a skin in all directions is not applicable. It has to be looked at on a stope by stope basis. For other types of mines that don't have a gradational contact, the grade drops off precipitously beyond the contact, here is an example for a narrow vein mine: Dilution modelling can be done for underground and software providers…continue reading →