Clwyd Metal Mines Survey
lies in the community of Nercwys in the county of Flintshire. It is located at Ordnance Survey national grid reference SJ21606080.
The mine is recorded in the CPAT Historic Environment Record as number 103186 and this number should be quoted in all correspondence.
Lead/Silver (Early 19th century-1857)
The area of Jamaica Mine lies on the flat measures of Cefn-y-Fedw Sandstone. The flat outcrops near America Farm (SJ21306085), but no limestone appears.
The sett worked the top flats of Cefn-y-fedw sandstone in which no vein was discovered. The ore outcropped near America Farm and was also worked through inclines.
A run of at least twelve substantial shafts, open workings and spoil heaps extend across the area of the mine from SJ21806100 westwards towards the Maeshafn Mine (SJ20406105).
The Jamaica workings were cut by the Maeshafn Vein.
A substantial metalled trackway traverses the mine area from America Farm at SJ21306085, passing through large limestone gateposts, probably 18th century, and appears to be the main route for transportation of ore. It runs eastwards towards the road at
SJ21906100 and at this poiny could have continued across to the Smelter site at East Maeshafn.
A large rectangular pond remains at SJ21756090.
The modern housing conversions at SJ21456090 could have originally been a miners' terrace.
This HTML page is reproduced from the Powys and Clwyd Metal Mine Surveys which were undertaken between May 1992 and December 1993 by Mark Walters and Pat Frost of the Clwyd Powys Archaeological Trust with financial support from Powys County Council, Clwyd County Council and Cadw: Welsh Historic Monuments. Further information about this site is available in CPAT's Regional Historic Environment Record.
Page produced by Rachel Stebbings and Chris Martin.
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