Geological plan of Old Drainage and Milwr Tunnel [from near Wern-y-Gaer to Taylor's and Olwyn Goch Shafts] and section from Olwyn Goch Shaft to Taylor's Shaft.
Scale: 1 inch to 100 feet.
51 cm x 134 cm.
D1/9.
Geological plan of Old Drainage and Milwr Tunnel [from near Wern-y-Gaer to Taylor's and Olwyn Goch Shafts] and section from Olwyn Goch Shaft to Taylor's Shaft.
Scale: 1 inch to 100 feet.
51 cm x 134 cm.
D1/9.
Please order documents using the alternative reference number (where provided).