The average typing speed is 38-40 words per minute (wpm) for adults  in a professional working environment (despite many incorrect  reports on the web that it is 50-60 wpm).
Chronic Health Effects The following chronic (long-term) health effects can occur at some time after exposure to Mica and can last for months or years: Cancer Hazard * Some Silicas have been shown to cause cancer in animals. The risk of cancer in humans from Mica is unclear at this time.
Methanol is metabolised by alcohol dehydrogenase (ADH) to formaldehyde, which is further metabolised by aldehyde dehydrogenase (ALDH) to formic acid. Formic acid is the main toxic metabolite responsible for the retinal, ophthalmic and neural toxicity seen with methanol ingestion.