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OSBM Bolt: Upper Hurst Brook 
OSBM Bolt on culvert at E bank of Upper Hurst Brook, N side of road, Bamford [3GL].
Location
Grid reference: SK 2104 8216.
Landranger 110: Sheffield & Huddersfield, Glossop & Holmfirth.
Structure: Culvert.
Waypoint: OS0035.
Neighbouring Flush Brackets
The nearest fundamental bench mark is Broomhead Moor,
12.97km to the north.
Third Geodetic Levelling, England & Wales (1950-68)
This bench mark was used during the Third geodetic levelling, England & Wales. It was included on the Broomhead Moor to Matlock levelling line. The surveyor's description was OSBM Bolt on culvert at E bank of Upper Hurst Brook, N side of road, Bamford.
Location
Grid reference: SK 2104 8216.
Landranger 110: Sheffield & Huddersfield, Glossop & Holmfirth.
Structure: Culvert.
Waypoint: OS0035.
Neighbouring Flush Brackets
| 636 | Bamford, Railway Station 472.02m to the northwest. |
| 635 | Hathersage, Jagger's Lane Bridge 1.12km to the east. |
| 637 | Bamford, Methodist Chapel 1.50km to the north. |
| G2302 | Hathersage, Mont Vue 1.74km to the southeast. |
| 634 | Hathersage, Railway Viaduct 2.00km to the southeast. |
Third Geodetic Levelling, England & Wales (1950-68)
This bench mark was used during the Third geodetic levelling, England & Wales. It was included on the Broomhead Moor to Matlock levelling line. The surveyor's description was OSBM Bolt on culvert at E bank of Upper Hurst Brook, N side of road, Bamford.
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