OSBM Bolt: Waterston, Oil Refinery   

NBM BOLT WKS TP NW SIDE JUNC RDS (57.4219m ODN, 0.8m AGL, 3rd order, verified 1971).

Location
Grid reference: SM 9385 0542.
Landranger 157: St David's & Haverfordwest.
Landranger 158: Tenby & Pembroke.
Structure: Unknown.
Waypoint: OS2863.

Neighbouring Flush Brackets

G5100	Milford Haven, Pill Road 3.01km to the west.
G5099	Steynton, Hayguardhay Farm 3.19km to the northwest.
S7941	Pembroke Dock, Barracks 3.55km to the southeast.
G4919	West Popton Farm 3.90km to the southwest.
S7942	Pembroke Dock, Council Offices 4.00km to the southeast.

The nearest fundamental bench mark is Haverfordwest (1969), 10.71km to the north.