CPAT Regional Historic Environment Record
The following information is from the on-line database 'Archwilio'.
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Milwr Mine

Primary Reference Number (PRN) : 103463
Trust : Clwyd Powys
Community : Holywell
Unitary authority : Flintshire
NGR : SJ19307450
Site Type (preferred type first) : POST MEDIEVAL SILVER MINE / POST MEDIEVAL LEAD MINE / POST MEDIEVAL ZINC MINE

Description :
Lead/Silver/Zinc (18th century-1913)

Geology
Carboniferous Limestone with chert beds and Lower Coal Measures.

Workings
The Milwr Mine worked the eastern end of the Milwr Vein and its several strings from early 18th century. The Milwr Company worked the richest part of the vein as it ran eastwards from Brynford Hall to cut the Holywell-Halkyn Road.

The main 19th century mine site at Milwr Farm remains as wasteground amid 20th century industrial buildings. The larger shafts on this site were worked to the south-west of the Halkyn-Holywell Road to the north of the farm buildings. The well established housing development of Pistyll has masked much of the mining evidence.

A drainage level on the vein still issues water at SJ19237470. The mine ceased operations several times due to drainage problems. The Sea Level tunnel reached the sett in 1904 operated by the Holywell and Halkyn Mining and Tunnel Company and later by the Halkyn District United Mines.


Transport
No evidence.

Power
In 1888, when the Milwr Mining Company was formed, the prospectus detailed the following machinery; a compound horizontal pumping engine with a 302 high pressure engine and a 56" low pressure engine.

In 1893 this was offered for sale along with an 18" and a 14" winding engine, and a twin 12" cylinder capstan engine.

In 1833, a 63" pumping engine was reputedly at work on the sett.

The 1st edition OS map shows reservoirs to the east of a house called The Cottage. Only slight rectangular earthwork evidence remains at SJ19417458 of the reservoirs which would have served the dressing floors.

Processing
No evidence.

Other features
No evidence.

Sources :
Clwyd Powys Archaeological Trust , 1993 , Site visit record - PRN103463

Events :

Related records

Compiled date : 28-02-1985


Archaeological data, from the Historic Environment Record, supplied by The Clwyd-Powys Archaeological Trust in partnership with Local Authorities, Cadw and the partners of ENDEX © CPAT, 2025 (and in part © Crown, 2025). It is intended to be used for private research only and is not for use as part of commercial projects. If you wish to use this information for publication in printed or multimedia form or to compile resources for commercial use, prior permission must be obtained in writing. Use of this information is subject to the terms and conditions of access to HER data published on CPAT's website. Please contact the HER if you have any further questions regarding this information. Please quote the Primary Reference Numbers (PRNs) in any correspondence.

April 20, 2025, 12:07 pm - File produced for Archwilio from CPAT's Regional HER.
Clwyd-Powys Archaeological Trust, The Offices, Coed y Dinas, Welshpool, Powys, SY21 8RP
tel (01938) 553670, email her@cpat.org.uk, website www.cpat.org.uk

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