Although one of the most extensive mines in the Dolgellau gold belt, Glasdir, first opened as a quarry about 1852, was primarily a copper mine, with 13,077 tons of dressed copper ore leaving the mine between 1872 - 1913.
In 1907, the owner Stanley Elmore, who had previously built a mill for the Elmore Flotation Process at the Sygun copper mine at Bedgellert, transferred the plant and equipment to Glasdir when that mine failed.
Glasdir closed in 1915. The recorded output of precious metals between 1872-1915 was 8,275 ounces of silver (1913-14)and 735 ounces of gold (1914).
refs:
Goldmining in Western Merioneth, T. A. Morrison (undated)
The Gold Mines of Merioneth, G.W. Hall (undated)
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UK OS Grid Reference: SH740223
Map Reference: 52°46'59"N , 3°52'6"W
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