East Halkyn Mining Co, drainage to New Shaft].
Surveyor: J Humphreys.
Scale: 1 inch to 66 feet.
65 cm x 45 cm.
A4/29.
East Halkyn Mining Co, drainage to New Shaft].
Surveyor: J Humphreys.
Scale: 1 inch to 66 feet.
65 cm x 45 cm.
A4/29.
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