Quarry Accidents in the United States During the Calendar Year 1941 Page: 2
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2 QUARRY ACCIDENTS IN THE UNITED STATES, 1941
overburden. Of the six fatalities that occurred in underground
quarries, five were caused by falls of rock from roof or wall. Han-
dling rock while loading at the working face or chute was the chief
cause of nonfatal injuries in underground quarries. Among workers
at crushers, cement mills, and other plants outside the quarries the
principal causes of fatal accidents were machinery, electricity, and
falls of persons; and the main causes of nonfatal injuries were han-
dling materials, machinery, falls of persons, and flying objects.
In the absence of specific records of the number of days lost from
accidents at all quarries, the accident-severity rate for the industry
is estimated at 5.53 per thousand man-hours of exposure compared
with an estimated rate of 5.79 for 1940. The estimate. for 1941 is
arrived at by applying a time charge of 6,000 days to each of the 76
fatalities and 12 permanent total disabilities that occurred during
1941, a charge of 1,328 days to each of the 183 permanent partial
disabilities, and a charge of 28 days to each of the 6,675 temporary
lost-time injuries reported for the same year. The applied charges
for deaths and permanent total disabilities are standard charges for
such classes of industrial injuries. The charges for permanent partial
disabilities represent the average charge per injury as shown by special
studies of accidents at quarries that have participated in a Nation-
wide safety contest-the National Safety Competition-cbnducted
by the Bureau of Mines during the past 3 years. The charge for each
case of permanent partial disability reported by companies enrolled
in the yearly'safety contests is made with due consideration to the
nature of injury and part of the body affected. The average days
lost per temporary injury is likewise obtained from the records cover-
ing a similar class of injuries in the National Safety Competition.
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Adams, William W. & Wrenn, Virginia E. Quarry Accidents in the United States During the Calendar Year 1941, report, 1943; Washington D.C.. (https://digital.library.unt.edu/ark:/67531/metadc12612/m1/4/: accessed March 23, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.