Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Heritage of Mercury. Almadén and Idrija' has mentioned 'Human' in the following places:
Occurrence Sentence Text Source
Due to the human toxicity of mercury and its byproducts, the mine has variously employed penal labour, slave labour, and prisoners of war over its long history.
A heavy metal, which is liquid at room temperature and has very specific chemical and physical properties, mercury is also a pollutant, which is dangerous for human health.