Strata passed through by Killingworth Sinking Pit.
| Fs. | Ft. | In. | Fs. | Ft. | In. | ||
| Clay | 8 | ─ | ─ | Brought forward | 65 | ─ | 1 |
| Coal | ─ | 1 | 3 | Black Stone | ─ | 4 | ─ |
| Grey Metal | ─ | 4 | ─ | Coal | ─ | ─ | 8 |
| Grey Post Girdles | ─ | ─ | 8 | Grey Thil and Whin Girdles | 1 | ─ | ─ |
| Grey Metal Stone | 4 | ─ | ─ | Strong blue stone | 1 | ─ | ─ |
| Strong Post mixed with Whin | ─ | 3 | ─ | Black stone | ─ | 3 | ─ |
| Post | 2 | 1 | ─ | Coal | ─ | ─ | 3 |
| Black Stone | ─ | 1 | 6 | Grey Thil | ─ | 4 | ─ |
| Coal [1][2] | ─ | ─ | 9 | White post with Whin Girdles | 2 | 3 | ─ |
| Black Stone[1][2] | ─ | ─ | 8 | Grey metal and Girdles | ─ | 2 | ─ |
| Coal[1][2] | ─ | 1 | 8 | Black Stone mixed with Coal | ─ | 5 | ─ |
| Grey Metal | 1 | ─ | ─ | Soft grey metal | ─ | 3 | ─ |
| Strong blue Stone | 2 | 1 | ─ | Grey Metal | 1 | 3 | ─ |
| Coal | ─ | 2 | 4 | Coal | ─ | 1 | 6 |
| Grey metal | ─ | 2 | 5 | Grey blue Metal | ─ | 1 | ─ |
| Coal | ─ | ─ | 6 | White post | 1 | 2 | ─ |
| Blue Stone | 1 | 5 | ─ | Blue Metal | ─ | 1 | ─ |
| Whin Girdles | ─ | 2 | 6 | Coal | ─ | 1 | 10 |
| Blue Stone and Whin Girdles | ─ | 5 | ─ | Grey Metal with Post Girdles | 2 | 2 | ─ |
| Coal | ─ | ─ | 4 | Coal | ─ | 1 | ─ |
| Gray Thil | 1 | 1 | 8 | Grey Metal Stone | ─ | 2 | ─ |
| Grey post | ─ | 2 | 4 | Grey post | 1 | ─ | ─ |
| Blue Stone | ─ | 2 | 3 | Grey and Blue Metal | ─ | 4 | ─ |
| Coal | ─ | ─ | 4 | White post | ─ | 3 | ─ |
| Grey and blue Metal with Girdles | 1 | 4 | ─ | Grey and blue Metal with Whin Girdles | 1 | 1 | 6 |
| Blue Stone | ─ | 4 | 8 | Black Stone | 1 | ─ | ─ |
| Coal | ─ | 1 | 10 | Coal (A) | ─ | 2 | 6 |
| Grey Thil | ─ | 1 | 6 | White post | 1 | ─ | ─ |
| Strong grey post | 1 | 2 | ─ | Grey metal with Post Girdles | ─ | 5 | ─ |
| Grey Metal stone | ─ | 4 | 6 | Whine and white post | 1 | 2 | 6 |
| Slaty Coal, mixed with Black stone | ─ | 2 | 6 | Blue Metal with post Girdles | 2 | 4 | 6 |
| Grey Thil | ─ | ─ | 6 | Black Metal | ─ | 3 | ─ |
| slaty Coal | ─ | 2 | ─ | Blue Metal and Girdles | ─ | 24 | ─ |
| Grey post with water | 2 | 1 | 6 | Black Stone | ─ | ─ | 9 |
| Grey Metal with strong Girdles | 1 | 3 | ─ | Coal | ─ | ─ | 9 |
| Strong white post | ─ | 1 | 6 | Grey Thil and Whin lumps | ─ | 4 | ─ |
| Grey Blue Metal with Girdles | 1 | 3 | ─ | Blue Metal | ─ | 4 | ─ |
| Coal | ─ | ─ | 6 | White post | 3 | 2 | ─ |
| Blue Metal | ─ | 1 | 2 | Black Metal | ─ | ─ | 6 |
| Coal | ─ | ─ | 4 | Coal | ─ | ─ | 7 |
| Grey post with Metal Girdles and lumps | 3 | 1 | 9 | Grey Metal | ─ | ─ | 10 |
| Coal | ─ | ─ | 2 | Grey post | 2 | 4 | 6 |
| Grey Thil | ─ | ─ | 4 | Blue Metal | ─ | 4 | ─ |
| Coal | ─ | ─ | 4 | Black Metal | ─ | 1 | 2 |
| Grey and blue Metal with post Girdles | 2 | ─ | ─ | Grey and white post with metal partings | 1 | ─ | ─ |
| Soft blue Metal with lumps | 6 | ─ | 5 | Grey and Blue Metal | ─ | 5 | ─ |
| White post | 7 | ─ | ─ | Black Metal | 1 | 4 | 6 |
| Blue Grey Metal | ─ | 4 | ─ | Coal | ─ | 1 | ─ |
| Grey post | 4 | 2 | 4 | Grey Metal | ─ | 5 | 7 |
| ─ | ─ | ─ | White post with Metal partings | 8 | 4 | 6 | |
| ─ | ─ | ─ | Tor Coal rather coarse | ─ | ─ | 4 | |
| ─ | ─ | ─ | Clean Coal (B) | 1 | ─ | 1 | |
| ─ | ─ | ─ | Bottom Coal to be curved out | ─ | ─ | 3 | |
| ──────── | ──────── | ||||||
| Carried forward | 65 | ─ | 1 | Total | 115 | ─ | 7 |
| ──────── | ──────── | ||||||
