All I know of this place is that was a porcelain works with nearby clay mine and it closed c1920. Does anyone know when it was built, who owned it or anything else about it?

Hi Hodbarrow,
Welcome. Llanlleiana quarried/worked the same deposit of weathered quartzite/china clay as Porth Wen, which is to the E., to produce bricks, probably something like fire/refractory bricks i.e. high value. It seems that fuel was brought in by sea and the produce exported that same way. The chimney is remote and seemingly unconnected because the flue was built on the ground using the topography to gain flue height; it is also much easier to build like this! The site was destroyed by fire in 1920.
There is some info. on the Penmorfa web site. If you ever find a brick that comes from here, Dave Sallery would much appreciate a photo!
Gwynedd, Inheriting a Revolution. Gwyn. Philimore, 2006.
ISBN 1-86077-432-6 has a few pages on the four Anglesey brick works, with a few attached references. A very good book!
Don't forget the brick works at Cemaes and the Hoffmann kiln. The heritage centre at Cemaes may have some info.; they do have a web site.

Thanks for that Gwyn. Any idea what the company was called that owned Llanlleiana? If it was known as the 'porcelain works', maybe it made glazed bricks or even glazed firebricks.
Explored another brickworks farther east (Llanelian??) which had beehive kilns, water tube boiler etc some years ago, but it seemed to have a quarry rather than a mine for its clay.
Is Llanlleiana Mine still accessible?

I have no idea or leads on any company that might have run the works.
Porcelain has, as it were, a multitude of meanings. The glazing of porcelain is a subject in itself!! Hard porcelain bricks wouldn't need glazing, would they? Soft might be a different matter. That said, I have a dim memory that there was a Japanese gentleman that lived in the area and that he had been employed by ? Porth Wen? as an artist to design ? fire-grate tiles? Early C20?
The works to the E. that you mention, are the Porth Wen site which is a S.A.M.
Llanlleiana is on the Angelsey Coastal Footpath and is quite accessible, check out the O.S. of the area. Plenty of footpaths. I don't think that there was ever a mine, it was quarried, but I may be totally wrong..suprise me! :thumbup: