Asbestos is a series of six silicate minerals naturally very terkanal compatible with fire and resistance to the sound absorption capability. On the downside, this mineral causes cancer and other diseases. This is very dangerous to the European Union has banned all mining and use of asbestos in Europe. In Canada in Thetford Mines, you can visit a very large hole in the asbestos open pit mine is still fully operational. Free tickets (already dangerous period still have to pay anyway?). If you decide to visit, do not forget to fill your body with complete bio-hazard suit.