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Amgueddfa Cymru – Museum Wales
Coal briquette maker made in workshops in Cynheidre for private use amongst workforce. Anthracite coal dust was mixed with a little cement dust and forced into the container. When it hardened it could be pushed out in a small cylindrical block to be used on domestic fireplaces (probably 'Parkway' or similar as anthracite will burn out a normal domestic grate).
