Agreement as to the existence of hazards was 91-100% (mean 96%), that for the
adequacy of safety measures being 94-98% (mean 96%).
The validity of the method was not examined. On the other hand, when the actual variables
(the existence of hazards and the adequacy of the safety measures) were measured, the
situation was tbund to be logically valid.
To find out the number and type of accidents involving lathes, reports prepared by
employers on industrial accidents that occurred at lathes during study periods I and II and
that were included in Finland's official statistics on industrial accidents were analyzed. The
material comprised occupational accidents occurring in the province of H~ime that had led
to disability of at least three days, the day of the accident excluded. Supplementary information
was acquired in cases when it was not possible on the basis of an accident report to
determine how the accident had happened. Enquiries of this type were made for 58 cases
in study period I and tbr 33 cases in study period II.
2.2. The study on 12 target enterprises
Betbre study period II, 12 of the 98 enterprises studied during study period I were selected
for the target group. These enterprises had had an exceptional number of lathe accidents