Eternit
Eternit is a brand of roofing and panelling material made of fibres and cement.
Originally the fibres were asbestos, and the material was commonly used in housebuilding because of its low cost, fire-resistance, light weight and other properties.
Now, after the discovery of its extremely high carcinogenic toxicity, its use is forbidden in many countries. Many ex-workers have sued the company and most scientists advise removing it from houses. Removal has to be done by specialized technicians.
