Trélazé was the major producer of slate in this area and is pretty much the source of the roof tiles for most of the Châteaux of the Loire, and with the white Tufa stone, gives Anjou its traditional black and white architecture. This museum is well organised and gives a good outline of the history of slate mining and the development of the technology needed to exploit its use. Of particular interest is the demonstration given of the traditional methods of cutting/slicing the slate to manageable pieces suitable for tiling. A very educational visit. A bit difficult for non-Francophones - there was not much information in English.
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