Settlingstones (Witherite)
Colliery Management (prior to 1970)
| Year | Pit | Position | Name | No. & Class of Certificate |
| 1860 | | Agent: | Frederick Hall, Hexham | |
| 1865 | | Manager: | Fred. Hall | |
| 1894 | | Agent: | S. Watson | |
| 1896 | | Agent: | S. Watson | |
| 1900 | | Agent: | S. Watson | |
| 1902 | | Agent: | S. Watson | |
| 1905 | | Agent: | S. Watson | |
| 1910 | | Agent: | S. Watson | |
| 1915 | | Agent: | W. Watson | |
| 1921 | | Agent: | H. Clark (Secretary) | |
| 1923 | | Agent: | H. Clark (Secretary) | |
| 1924 | | Agent: | H. Clark (Secretary) | |
| 1925 | | Agent: | H. Clark (Secretary) | |
| 1927 | | Agent: | H. Clark (Secretary) | |
| 1929 | | Agent: | H. Clark (Secretary) | |
| 1930 | | Agent: | H. Clark (Secretary) | |
| 1935 | | Agent: | H. Clark (Secretary) | |
| 1936 | | Agent: | H. Clark (Secretary) | |
| 1938 | | Agent: | H. Clark | |
| 1944 | | Agent: | G. Trestrail (manager) | |
| 1948 | | Agent: | G. Trestrail | |
| | | Manager: | G. Trestrail | |
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