Timber gold production has been flat for a decade despite the 250 to 1750 rise. Grade mined has dropped since 1998 from 2gpt to 1.2
The low grade deposits you believe meet the demand because they are payable at higher prices are small bikkies. The big low grade copper/gold systems take billions to develop and years of planning
Peak gold has been reached at these prices Gold continues to rise as long as the Chinese keep buying and central banks remain net buyers and there is no material dishoarding