on leased from state endowment lands and they won't let us touch trees and they said no more vertical cuts, the pay zone is the bottom 8 feet stream laid aluvium . then their is another 8 feet of dirt soil eluvial deposit from the side hill mostly dirt that the trees grow in. local friend whos mined for over 40 years says most of the pay in in the bottom 4 feet especally on the bedrock was thinking I have free suply of 4 x4s 3 foot long and a good bit of 6 foot long 2 by lumber of various widths
was thinking of tunneling into the base of the gravel and put up roof suports to prevent cave in. would like to dry land dredge and reach in to dig with long tools to stay out side or at least under the protecting timbers so that any minor rock falls at the face I am not under. and then every 6 inch or so go and put in 4 x4 posts with 2 by limber on edge above it.
spaning 6 feet how deep should the 2 inch planks on edge be? my friend to said the pay layer a is at the bottom does not like the idea of tunneling in aluvium.
when finished should be able to pump tailing in wet tailings to fill tunnel because first have to dig down 4 feet to get to bed rock, know their is good gold right there but we can't cut the trees even though they are likely 30 years from market size can't just oull the bracing out because being only 2
12 feet below the surface would cause ground slumping also a no no. thankyou
ps would prefab the roof beam stacking 4 layers of plank on edge nailed or screwed and glued so it was 6 or 9 inches front to back say a 2x12 then a 2 xy 4 then a 2 by 6 then a 2 by 4 ant for the 6 layer units another 2x4 and finish wuth a 2 by 12 to put them in place one post would be atached then ther other end jacked into place and the second post wedged into position then 45 degree braces could be added in the corners for added stifffening ( ie 4 by 4s cut on both ends at 45 degrees and screwed in place
was thinking of tunneling into the base of the gravel and put up roof suports to prevent cave in. would like to dry land dredge and reach in to dig with long tools to stay out side or at least under the protecting timbers so that any minor rock falls at the face I am not under. and then every 6 inch or so go and put in 4 x4 posts with 2 by limber on edge above it.
spaning 6 feet how deep should the 2 inch planks on edge be? my friend to said the pay layer a is at the bottom does not like the idea of tunneling in aluvium.
when finished should be able to pump tailing in wet tailings to fill tunnel because first have to dig down 4 feet to get to bed rock, know their is good gold right there but we can't cut the trees even though they are likely 30 years from market size can't just oull the bracing out because being only 2
12 feet below the surface would cause ground slumping also a no no. thankyou
ps would prefab the roof beam stacking 4 layers of plank on edge nailed or screwed and glued so it was 6 or 9 inches front to back say a 2x12 then a 2 xy 4 then a 2 by 6 then a 2 by 4 ant for the 6 layer units another 2x4 and finish wuth a 2 by 12 to put them in place one post would be atached then ther other end jacked into place and the second post wedged into position then 45 degree braces could be added in the corners for added stifffening ( ie 4 by 4s cut on both ends at 45 degrees and screwed in place
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