We have recently been doing some prospecting out the back on one of our friends claim in the grey district to very good results it had all been mined in the past but the area we had mined, they were yet to get out with the machinery and had 150 years worth of gold in it and it gave some good results and we are considering purchasing a 4-6" gold dredge to get the work done easier rather then just going all out on the sluices and maybe moving 1M2 of dirt a day.
But we have set our eyes on a bigger prize, a few KM downstream the creek gets much much deeper so deep that our friends massive digger cannot even scrap the bottom of it with a 6M deep reach, so they where forced to stop mining further downstream, I thought alright this could have potential most dredges can get that deep and there would be good gold but it would be very diffcult and it would probably be better off to go up the back when the bedrock was only 1/2 a metre deep . But we got talking and found out it is not only virgin in recent years but has never been touched even by the oldtimers as it was just to deep for them to get, they said once they started getting to the deep bedrock 5 or 6M deep just shallow enhough to reach they got incremental results ( 100s of ounces a day ( this was 30 years back though so wasnt worth so much ) ) but this was with a huge full scale operation.
So onto the point, if the bedrock is 6M deep and just gets deeper from there, but if it was completly virgin untouched ground in a rich creek with a lot of gold, would it be worth the effort to dredge down that deep? The creek is a reasonable size maybe the size of moonlight creek or slab hut creek, but would it be safe and actually still to a good result to dredge down that deep to get to the virgin bedrock .
Any info is very much appreciated