Which risk increased after copper arsenic alloying began in 3500 BCE leading to early bronze production?

💡 Explanation

When copper-arsenic alloying began, arsenic fumes were released during smelting because arsenic sublimates at relatively low temperatures, leading to inhalation and chronic arsenic poisoning among unprotected metalworkers. Therefore arsenic poisoning was much more likely, rather than tool brittleness, metal fatigue, or decreased corrosion, which are related to different metallurgical processes or environmental conditions.

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