They have all been taken in the adit. America Shaft is on the left as you go in, you can walk down into the cove and into the adit in relative safety, take a good torch. The shaft is on the left and wet to get to, the adit continues inland through a very low wet section which requires proper equipment and clothing such as a wet suit.
You will be OK though just going inside the entrance but no further
I am going away in the morning and in a rush, the survey is now doubtful. If you email me, address in the PM sent I will bounce some scans back to you.
My avatar is a poor likeness.