Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 167,647 pages of information and 247,065 images on early companies, their products and the people who designed and built them.
Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 147,919 pages of information and 233,587 images on early companies, their products and the people who designed and built them.
Mr. John Stewart MacArthur together with Messrs. R. W. and W. Forrest, physicians of Glasgow, successfully adapted the cyanide process to extract gold from ore. The process was known as the MacArthur-Forrest cyanide process.
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