Quarry Accidents in the United States During the Calendar Year 1934 Page: 1
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QUARRY ACCIDENTS IN THE UNITED STATES DURING THE
CALENDAR YEAR 19341
By WILLIAM W. ADAMS 2 AND VIRGINIA E. WRENN3
The stone-quarrying industry of the United States, including
such related operations as rock crushing, rock dressing, and the
manufacture of cement and lime, reported a larger volume of employ-
ment in 1934 than in 1933. Reports from the operating companies
to the United States Bureau of Mines showed an increase in the
number of men employed, number of man-days of employment, and
total number of Inan-hours of labor performed during the year.
Moreover, the average worker had a longer period of employment
during 1934, the gain amounting to 11 percent over 1933. The
increase in employment was accompanied by no increase in accidents
for the industry as a whole; in fact, the accident rate for 1934 was
a fraction lower than the rate for 1933. In some branches of the
industry the frequency of accidents increased, but these increases
were more than offset by reductions in rates for other branches.
Reports for 1934 were received from 1,403 active plants. The
working force averaged 64,331 men for 204 days per man, and the
total period of employment for all of the men was 95,258,880 man-
hours. Each employee averaged 1,481 hours of work during the year.
The total number of hours of labor represented a gain of more than
8 percent, and the average working time per employee showed a gain
of 62 hours per man.
Accidents to employees while at work resulted in 60 deaths and
3,924 nonfatal injuries, the injuries including 3 permanent total
disabilities, 114 permanent partial disabilities, and 3,807 temporary
disabilities lasting longer than the remainder of the day on which
the accidents occurred. The number of deaths indicated a fatality
rate of 0.63 per million man-hours of employment or exposure to
occupational hazards; the rate for 1933 was 0.67. Nonfatal injuries
occurred at the rate of 41.19 per million man-hours compared with
41.38 in 1933.
As the accident reports from the operating companies do not show
the number of days of disability resulting from an accident, the
number of days lost in proportion to the total number of hours
worked cannot be stated. The accident-severity rate for 1934 is
estimated as 6.21 days of disability per 1,000 man-hours of employ-
ment compared with 6.62 for 1933. This estimate is obtained by
I Work on manuscript completed June 1936.
2 Supervising statistician, employment statistics section, U. S. Bureau of Mines.
I Employment statistics section, U. S. Bureau of Mines.
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Adams, William W. & Wrenn, Virginia E. Quarry Accidents in the United States During the Calendar Year 1934, report, 1936; Washington D.C.. (https://digital.library.unt.edu/ark:/67531/metadc12566/m1/3/: accessed March 19, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.