Document gD4yOj6EBXO2rzd9Mmm6aO53V

) I 4 i i0/ 2 can ;.'l ART or nionoa A. Farloua foms of asbestos fibres product typical fibrosis la the lanes of sone aalaala. B. Flbroala la produced by the aartnnlcal and aot the ehealeal action of tho flbro. C. Flbroala la produced by the lone flbroa (20-50 nlcrona) and not by tho abort flbroa (under 20 aleroaa). D. Aabeatoala eua produced la an a taoephere with a total duat count of 13$ l.F.F.C.F. of which only 0.6$ wore 10 aleroaa or lcncer, C. Aa the coacentratloa of lone flbroa la the air la in creased, the flbroala dowelopa la a shorter tlao. F. Flbroala will not proeroas after renewal froa duat to aoraal air, Q. Aabestosla bodlea are fomed around fibres to prewoat further Irritation, * ? H. Alunlaiai therapy la uaelesa la aabestosla. Z. Aabastes duat cauaea no alfalfleant chance la the course of pulaenary tuberculosis. Tail ,,