RE:RE:RE:RE:RE:Big volume on New York todsay.....blackhawk2003 wrote: It looks to me, that one high grade stope lost, due to an insufficient blast, has cause these problems. Some rounds are in 100s of gs/t. They are mixed with much lowers rounds to get the approximate grades planned for the mill. If they lose or delay these types of stopes the grade and tonnage suffers.
Blackhawk , I suspect you have spent a day underground , and on the off chance you did , Im quite confident you never handled a stick of explosives or blasting cap.
Temporarily losing one long hole stope is not uncoonon......... its known as a bench or hang up.Do you know the difference between a stope blast and a drift round??? Do you know the relative sizes of these blasts??
If not , I suggest you try to somehow educate yourself........ maybe the local college is teaching Mining Engineerring 101 this semester