Quarry Accidents in the United States During the Calendar Year 1938 Page: 1
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QUARRY ACCIDENTS IN THE UNITED STATES DURING THE
CALENDAR YEAR 19381
By WILLIAM W. ADAMS 2 AND VIRGINIA E. WRENN 3
The quarrying and related industries of the United States improved
their safety record in 1938 by reducing their accident-frequency rate
to a lower and more favorable position than it has occupied at any time
except 1935 since comparable accident statistics became available in
1916. The rates for 1935 and 1938 were identical. The number of
men employed in 1938, although smaller than in 1936 and 1937, was
larger than in any other year since 1930. Volume of employment, as
measured by the number of man-hours worked in the industry as a
whole, likewise was larger than in any year since 1930 except 1936 and
Reports from operating companies to the Bureau of Mines, United
States Department of the Interior, showed that 77,497 men were
employed in 1938, a decrease of 6,597 compared with 1937. This
figure represents the average number of employees for the period
during which the quarries and plants were active during the year,
which in 1938 averaged 223 workdays per employee compared with
241 in 1937. A total of 17.3 million man-days or 133.8 million man-
hours of work was shown for the industry as a whole, which indicated a
weighted average of 7.75 hours per man-shift. Reports for 1937
showed a total of 158.3 million man-hours for the entire industry and
an average workday of 7.81 hours. Accidents resulted in the death
of 82 employees, 5 more than in 1937, and in 5,027 nonfatal injuries
involving disability for more than the remainder of the day on which
the injuries were received. The number of nonfatal injuries was
1,321 less than in 1937. As the number of deaths and injuries was
reduced more, proportionately, than man-hours of employment,
the accident-frequency rate per million man-hours of work declined,
the rate for 1938 being 38.19 compared with 40.59 for 1937. In
other words, accident occurrence to the average employee was 6
percent more favorable in 1938 than in 1937 on the basis of actual
number of accidents and actual number of man-hours worked during
the 2 years.
Separate figures covering quarries, as distinguished from work out-
side the quarries such as stone crushing, stone finishing, or the manu-
facture of cement or lime, showed an accident-frequency rate of 61.12
per million man-hours worked, a reduction of 3 percent from the rate
for 1937. Reports covering work outside the quarries indicated a
rate of 23.54, a reduction of 9 percent from 1937.
1 Work on manuscript completed February 1940. Lucile S. Horton assisted in the preparation of the
statistical tables herein presented.
2 Supl)rvising statistician, e pn.loyment statistics section, Bureau of Mines.
3 Employment statistics section, Bureau of Mines.
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Adams, William W. & Wrenn, Virginia E. Quarry Accidents in the United States During the Calendar Year 1938, report, 1940; Washington D.C.. (https://digital.library.unt.edu/ark:/67531/metadc12592/m1/3/: accessed March 22, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.