Magnetic survey of the Belmont Iron Mine : lot 19, con. 1, Township of Belmont, County of Peterboro, Province of Ontario : map of the vertical intensity / Eugene Haanel, Superintendent of Mines ; surveyed by B.F. Haanel.
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Beinecke Rare Book and Manuscript Library > Magnetic survey of the Belmont Iron Mine : lot 19, con. 1, Township of Belmont, County of Peterboro, Province of Ontario : map of the vertical intensity / Eugene Haanel, Superintendent of Mines ; surveyed by B.F. Haanel.