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Latitude: 50.2799 / 50°16'47"N
Longitude: -5.2326 / 5°13'57"W
OS Eastings: 169788
OS Northings: 47211
OS Grid: SW697472
Mapcode National: GBR Z3.9GL1
Mapcode Global: VH12C.8729
Plus Code: 9C2P7QH8+WX
Entry Name: Boiler House at Approximately 150 Metres South East of Lower Engine House
Listing Date: 31 October 1988
Grade: II
Source: Historic England
Source ID: 1328689
English Heritage Legacy ID: 63862
ID on this website: 101328689
Location: Porthtowan, Cornwall, TR4
County: Cornwall
Civil Parish: St. Agnes
Traditional County: Cornwall
Lieutenancy Area (Ceremonial County): Cornwall
Church of England Parish: Mount Hawke with Mithian
Church of England Diocese: Truro
Tagged with: Architectural structure
ST AGNES TYWARNHAILE MINE
SW 74 NW
7/234 Boiler house at approximately 150
metres south-east of Lower Engine
- House
GV II
Former probable boiler house to Lower Engine House of Tywarnhaile Mine. Circa early
C19. Killas rubble. Roofless.
Plan: Rectangular plan with furnace opening at the north end (left), built into the
bank at the rear and L-shaped yard enclosed by high wall in front and at the left-
hand end. Roofless. No surviving machinery.
Exterior: Rubble walls survive to original height except that part of the original
right-hand gable is missing. Furnace opening is spanned by a round arch.
Interior is an empty shell.
Listing NGR: SW6977247222
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