1 f, 382 INDUSTRIAL HYGIENE AND OCCUPATIONAL MEDICINE Chart 5 represents a partial analysis of the results of this inquiry.

SILVERMAN ET AL.

546 INDUSTRIAL HYGIENE AND OCCUPATIONAL MEDICINE Pulmonary roentgenograms of August 7 disclosed some improvement.

KLINE ET AL.

KLINE ET AL.

598 INDUSTRIAL HYGIENE AND OCCUPATIONAL MEDICINE except possibly dyspnea or a decreased sense of well-being.

'H ig Cancel* Controls ;al Total 518 3 1 0 2 5 8 4 3 ing smoked cigarettes;!

tuberculous granulomatous tissue but no tumorous changes'.

2 made.

ga5ag5CS^^7B^ais^gsg^s S4 . - BRITISH JOURNAL OF INDUSTRIAL MEDICINE Table 4 the increase in mortality attributed to lung'canoer CAUSES OF DEATH AMONG MALE ASBESTOS WORKERS COMPARED WITH MORTALITY EXPERIENCE OF ALL MEN IN ENGLAND AND WALES over the past 30 years is certainly due to improvements in diagnosis and in therapy (.Doll, 1933).

INDUSTRIAL MEDICINE AND HYGIENE Edited by E.

52 FRANK A.

138 M.

770 S.

TABLE / (continued) Annual Lung Cancer Death Rato a per .100, 000 Man-Years ol Exposure by Exposure Category v* Expoiare Cfttecorv I a .