OCCUPA'l lONAI. AND ACCIDENTAL EXPOSURE 



^^'Cs. His overalls were worn w hilc al work and on at least foui and possibly 

 five evenini^s while he was al lioine doiiit; work aboul the house. On these 

 occasions he wore the overalls while al the evenini; meal durintr which his 

 faniilv consisting of his wife and tiiree young female children (li, 3\ and 5\ 

 years of age) were seated at the dining table in close proximity to him. 



During the night the overalls either hung on a wall in the living-room or 

 were draped over a chair in it, at a distance possibly of 10 to 12 feet from the 

 bunks in which the children sle])t. The positions are shown by the asterisks 

 in J'iiitDC I. 



Five other workmen were associated with Mr. X while he was at work 



c 

 o 



i 



T 

 c 

 o 



00 



1 



-12ft. Oin. 



■12ft. Oin. 



T 



c 

 o 



o 



I 



12ft.0in. 



Baby Father 



[Mother 

 I Child 



Child 

 Figure 1. Plan of the house of Mr. X 



and two of these were more closely associated with him than the others, 

 working with him all the time. 



Shortly after admission of Mr. X to hospital tests were performed on 

 him and the five other workmen. They were carried out by the hospital 

 staff. With the exception of those of Mr. X the only striking abnormality 

 in the other workmen were low platelet counts (148, 100, 150, 160, 138,000, 

 Mr. X's being 80,000). Serial examinations of the peripheral blood of Mr. X 

 were carried out l)y the hospital staff during a period of some months and 

 also several bone-marrow biopsies. Subsequently the right leg of Mr. X was 

 amputated at the hip joint, because of extensive tissue damage. The tests 

 referred to in the Introduction to this paper were performed on Mr. X and 

 four of his fellow workmen, on his wife and three children. Those on Mr. X 

 were continued at intervals for some months. 



38 



