 The US Occupational Safety and Health Administration ( OSHA ) has set the permissible exposure limit ( PEL ) for cadmium at a time @-@ weighted average ( TWA ) of 0 @.@ 005 ppm . The National Institute for Occupational Safety and Health ( NIOSH ) has not set a recommended exposure limit ( REL ) and has designated cadmium as a known human carcinogen . The IDLH ( immediately dangerous to life and health ) level for cadmium is 9 mg / m3 . 
 The US Occupational Safety and Health Administration ( OSHA ) <a href='been_done' title='1'><mark>has</mark></a> set the permissible exposure limit ( PEL ) for cadmium at a time @-@ weighted average ( TWA ) of 0 @.@ 005 ppm . The National Institute for Occupational Safety and Health ( NIOSH ) <a href='been_done' title='2'><mark>has</mark></a> not set a recommended exposure limit ( REL ) and <a href='been_done' title='3'><mark>has</mark></a> designated cadmium as a known human carcinogen . The IDLH ( immediately dangerous to life and health ) level for cadmium <a href='drop_aux' title='4'><mark>is</mark></a>9 mg / m3 . 
The US Occupational Safety and Health Administration ( OSHA ) done set da permissible exposure limit ( PEL ) for cadmium at a time @-@ weighted average ( TWA ) of 0 @.@ 005 ppm . TdaNational Institute for Occupational Safety and Health ( NIOSH ) done not set a recommended exposure limit ( REL ) and done designated cadmium as a known human carcinogen . ThdaDLH ( immediately dangerous to life and health ) level fa cadmium 9 mg / m3 .