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Old 2nd Jun 2020, 8:14 am   #1584
Radio Wrangler
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Join Date: Mar 2012
Location: Fife, Scotland, UK.
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Default Re: The Audiophoolery Thread.

Cadmium mining tailings also got in on the act. Cadmium just has a terrible history of pollution from beginning to end.

Chromium doesn't get off easily, a proportion always turns into the valency-6 form which is also banned. As there is a small amount of residual chromium in cement, they add an agent to oppose this. The agent has a limited life and so bags of cement now have use-by dates printed on them.

David
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