Anthracosis, asbestosis, silicosis, siderosis.

Although not poisonous as such - Prolongued inhalation of the chemical may effect the lungs... possibly resulting in siderosis.

Inhalation of cast iron dust causes deposition of iron in the lung, resulting in a condition called pneumosiderosis (also referred to as siderosis or Welder's lung) (McLaughlin, 1951; Sutherland et al., 2000; CCOHS, 2002; Khalid et al., 2009). Pneumosideros presents after chronic exposure to iron dust and symptoms include shortness of breath, coughing and development of sputum (Khalid et al., 2009).

According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 39 words with the pattern SID------. That is, nine letter words with 1st letter S and 2nd letter I and 3rd letter D. In alphabetical order, they are:

sidalceas

siddhuism

sidebands

sideboard

sidebones

sideburns

sidecheck

sidedness

sidedress

sidehills

sidekicks

sidelight

sidelined

sideliner

sidelines

sidelocks

sidenotes

sidepaths

sidepiece

siderated

siderates

siderites

sideritic

sideroads

sideroses

siderosis

siderotic

sideshoot

sideshows

sideslips

sidespins

sidesteps

sideswipe

sidetrack

sidewalks

sidewalls

sidewards

sidewheel

sidlingly

The National Institute of Occupational Safety and Health (NIOSH) indicates that rust is not toxic. The only problem noted is benign pneumoconiosis with X-ray shadows indistinguishable from fibrotic pneumoconiosis (siderosis) when inhaled. If eaten the acid in the digestive processes will convert rust to iron needed for blood formation or excrete the excess.