Representational Art

If an artist needs ear, eye and respiratory protection while carving stone in the true likeness of the model who is posing there in the studio, then it seems to me the model would need the same equipment.  For the piece to be realistically representational, the finished sculpture too would have to be depicted wearing that same safety equipment . 

Abstract sculpture does not demand this kind of authenticity.  Nor does building dry stone walls.
But then again, we don't usually use grinders, so we don't have to wear all that stuff anyway.  And our walls can look (and be) absolutely realistic without the rocks needing any kind of protection.