Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Mausoleum of the First Qin Emperor' has mentioned 'Lead' in the following places:

Occurrence Sentence	Text Source
It is reported in "Lintong County Annals" that from 1978 to 1980, according to general investigation on workers involved with benzene, mercury and lead, 1193 people from 21 factories were found poisoned.	WIKI