re: more thought for the sulphides bonanza ahead So nice to see...

re: more thought for the sulphides bonanza ahead So nice to see the enthusiasm for CMR showing in the market action last week.
I have a question for someone versed in processing of minerals in ore bodies. This is because I admit to a wealth of ignorance in matters metallurgical.
I have read somewhere that the presence of Lead in a Copper sulphide ore body creates costly BIG headaches. The same with Zinc.
As CMR's ore has so much of both I cant help wondering if there may be some nasty surprises in store in the future which would adversly impact on profitability.
I hesitate to contact the company on this as - in their position I would hate to be pestered by people like me ! (- especially with the challenges they have to put a working operation together in such a short time.)

Are there any HC people able to comment or throw light on such mining/processing questions ?
Westmoon