Sorry, if i didn't make myself clear...
1. There is NO definitive evidence that cribbing was used; only log platforms.
2. The the clayish till on oak island as documented by Dunfield, will NOT safely support the cutting/digging of niches into the shaft walls to support 14ft long logs for the platforms.
3. The walls CANNOT be baked in order to harden/strengthen them to support 14ft logs for the platforms.
4. Cribbing MUST be used to dig a vertcal shaft down to 100ft.
5. If the dispositors DID use cribbing while digging the shaft, the platforms to traverse the shaft would be on the inside of the shaft attached to the wall cribbing that is holding back the dirt.
6. If the depositors DID use cribbing, the wall cribbing is holding back the dirt so the depositors would NOT even have access to the dirt behind the wall cribbing to cut/dig niches for the 14ft long logs.
And there is no need to because they are using cribbing.
7. Since there is NO definitive evidence the depositors used cribbing, they would have had to have removed all of the cribbing while placing log platforms every 10ft as they filled the shaft.
8. Cribbing MUST be removed from the bottom up BUT it CANNOT be removed because the bottom cribbing carries the load of ALL the cribbing above it,
The only time cribbing is removed is when digging a well. The cribbing is replaced with stone walls/support as it is removed. The stone walls then carry the load
9. To close a vertical shaft, the top 10 or 20ft of the cribbing gets removed and the shaft opening is then covered and filled in with dirt.
Conclusion: if the depositors dug a 100ft deep shaft, they WOULD HAVE HAD to have used cribbing!
They could NOT have removed the cribbing.
Therefore, if the depositors DID use cribbing, then the Onslow company (1803) SHOULD HAVE found cribbing left behind by the depositors...NOT log platforms.