3. Environment. Toxicity

3.1 Environment

See [7][14][39][40] for references.

Certainly, mining, mineralurgy, extractive metallurgy and tungsten metallurgy create more or less the usual environmental problems. In some applications, the use of metal and its alloys leads to negligible and harmless dispersive losses. Disposal of used parts is not a major problem, since, as we saw in paragraph 5 of article [M 2 378] , recycling is very well organized and efficient.

The...