Gunnerton Colliery
Colliery Management (prior to 1970)
| Year | Pit | Position | Name | No. & Class of Certificate |
| 1882 | | Manager: | James Armstrong | |
| 1883 | | Manager: | J. Armstrong | |
| 1894 | | Manager: | Joseph Armstrong | No cert. |
| 1896 | | Manager: | Joseph Armstrong | No cert. |
| 1900 | | Manager: | Joseph Armstrong | No cert. |
| 1902 | | Manager: | Joseph Armstrong | No cert. |
| 1905 | | Manager: | Edward Armstrong | No cert. |
| 1910 | | Manager: | Edward Armstrong | No cert. |
| 1915 | | Manager: | Matthew Armstrong | No cert. |
| | | Under Manager: | John Armstrong | No cert. |
| 1923 | | Manager: | W. Herdman | No cert. |
| 1924 | | Manager: | W. Herdman | No cert. |
| 1925 | | Manager: | W. Herdman | No cert. |
| 1927 | | Manager: | A. Bowman | No cert. |
| 1929 | | Agent: | C. Herdman | |
| | | Manager: | T. Rochester | No cert. |
| 1930 | | Agent: | C. Herdman | |
| | | Manager: | T. Rochester | No cert. |
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