Of strata from River Dee to Halkin Mountain. Shows Bryn coch Colliery and line of [Halkyn Deep] Level (with plan).
Surveyor R. Hopkins.
Longitudinal scale: 1 inch to 140 yards.
126cm. x 23cm.
Of strata from River Dee to Halkin Mountain. Shows Bryn coch Colliery and line of [Halkyn Deep] Level (with plan).
Surveyor R. Hopkins.
Longitudinal scale: 1 inch to 140 yards.
126cm. x 23cm.
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