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Dear All, Can anyone enlighten me on the above co. please? I know Hedworth is near Jarrow, but beyond that I cannot discover anything else. Were they mining/producing Barytes or were they just refining ore for different markets? If anyone knows I would be most grateful if they could advise off-line please. Additionally, does anyone know anything about the Simplex Copper Extraction (Ireland) Syndicate Co.Ltd? Regards, Bernard.