| http://www.w3.org/ns/prov#value | - To all this add the multiplicity of unhealthy trades, which shorten men??s lives or destroy their bodies, such as working in the mines, and the preparing of metals and minerals, particularly lead, copper, mercury, cobalt, and arsenic: add those other dangerous trades which are daily fatal to many tilers, carpenters, masons and miners: put all these together and we can see, in the establishment and
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