Newton (Iron Ore)
Colliery Management (prior to 1970)
| Year | Pit | Position | Name | No. & Class of Certificate |
| 1900 | Newton (Iron ore) | Agent: | William Kellett | |
| 1905 | Newton (Iron ore) | Agent: | W. Woodhouse | |
| 1910 | Newton (Iron ore) | Agent: | W. Woodhouse | |
| 1915 | | Agent: | W. Woodhouse | |
| 1921 | Newton (Iron ore) | Agent: | G. E. Naylor | |
| 1923 | Newton (Iron ore) | Agent: | A. C. Henderson | |
| 1924 | Newton (Iron ore) | Agent: | A. C. Henderson | |
| 1925 | Newton (Iron ore) | Agent: | A. C. Henderson | |
| 1927 | Newton (Iron ore) | Agent: | A. C. Henderson | |
| 1929 | Newton (Iron ore) | Agent: | A. C. Henderson | |
| 1930 | Newton (Iron ore) | Agent: | A. C. Henderson | |
| 1935 | Newton (Iron ore) | Agent: | A. C. Henderson | |
| 1944 | Newton (Iron ore) | Agent: | W. T. Cornwell | |
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