Respiratory fibrogens

Respiratory fibrogens Fibrogenic dusts e.g. Free crystalline silica, (quartz, tridymite, cristobalite), asbestos (chrysotile, amosite, crocidolite etc.), talc. 

Reporting of Injuries, Diseases and Dangerous Occurrences (RIDDOR) Regulations 1995, 596 Respiratory fibrogens, 77 Respiratory protection ... 

Pulmonary fibrosis is the most commonly reported respiratory effect observed in workers exposed to fine aluminum dust (pyropowder), alumina (aluminum hydroxide), or bauxite. However, conflicting reports are available on the fibrogenic potential of aluminum. In some of the cases, the fibrosis was attributed to concomitant exposure to other chemicals. For example, pulmonary fibrosis has been observed in a number of bauxite workers (Devuyst et al. 1986 Gaffuri et al. 1985 Jephcott 1948 Musk et al. 1980 Riddell 1948 Shaver 1948) in these workers, it is very likely that there was simultaneous exposure to silica and that the latter was the causative agent rather than the aluminum. Some of the earliest cases of pulmonary fibrosis were reported in German munition workers exposed to pyropowder. 

---