Table I.

Metal agents, occupational exposure and IARC classification.

First author, year	CAS no.	Agent	IARC classification	Occupational exposure	Refs.
IARC, 2011; McElvenny, 2014; Bolognesi, 2014; de Vocht, 2007; Jönsson, 2009; Iavicoli, 2006	7440-38-2	Arsenic	Group 1	Coal-fired power plants; As extraction industry; timber manufacturing; glass industry; pesticides use; lead processing; pharmaceutical industry; leather preservatives; antifouling paints; agrochemicals production; microelectronics and optical industries; non-ferrous metal smelters	(23–28)
Baccarelli, 2002; NIOSH, 2015; Tijet, 2006; Walker, 2005	7440-43-9	Cadmium	Group 1	Ni-Cd battery manufacturing, Cd alloy production; Cd mining; manufacturing of Cd-containing ores and products	(29–32)

IARC, International Agency for Research on Cancer; CAS, Chemical Abstracts Service; NIOSH, National Institute of Occupational Safety and Health.