I don’t know if anyone here has seen this before but I was searching for some current info on different brands and amounts of heavy metals/ toxins etc and came across this table which is pretty informative… http://www.smokeless.org.nz/nasalsnuff\_analyses.pdf And this from the same website: “Risk of nasal cancer: There is inadequate evidence that nasal use of snuff is carcinogenic to humans. One third of Lesotho women use nasal snuff; less than 1 per 100,000 Lesotho women per year develop nasal pharyngeal cancer.” and… “In Africa, snuff containing high levels of chromium (24 - 97 ppm) and other metals was suspected to be the cause of high rates of nasal cancer in African people in past years…” both quotes from: http://www.smokeless.org.nz/nasalsnuff.htm
Another interesting read is ‘Food and its Adulterations’ by Arthur Hill Hassall which was published in 1855. It comprises the reports of the analytical sanitary commission of the medical journal ‘The Lancet’. Hassall was the chief analyst of the commission. Forty-three samples of snuff were subject to chemical analysis. Infraction of the then Tobacco Act was legion with large amounts of orris-root, chromate of lead, bichromate of potash, oxide of iron and other nasty elements being found in the samples.