DIGEST OF THE REPORT
Brass, Bronze, and Copper Prod- Valves and Fittings
ucts Writing Paper
Fine Specialty Machines Woodworking Products
Forgings Yarn and Thread
DECREASES Tv THE RATES oF Probucrion ACCOMPANIED BY DecrEASES IN THE
AccipenT FREQUENCY AnD SEVERITY RATES
Anthracite Coal Mining Gas
Boilers Paints and Varnish
Boots and Shoes
DECREASES IN THE Rats OF Probucrion AccoMPANIED BY INCREASES IN
Errmer (or Boru) rhe AccipENT FREQUENCY OR THE SEVERITY RaTEs
Boxboard Sandstone. and Bluestone Quarry-
Knit Goods ing
Limestone Quarrying Textile }
The net experience was, So per cent of the industrial groups had
an increase in the rate of production, 52 per cent had a decrease in
the accident frequency rate, and 68 per cent had a decrease in the
severity rate.
For the purpose of this digest straight line trends have been pre-
pared, using the method of least Squares. The accident and produc-
tion performance for the first year was taken 4s 100. By using the
index method the increases or decreases in the percentages can be read
directly from the charts. A summary of the findings for each in-
dustrial group follows.
ACIDS AND HEAVY CHEMICALS
120
2 100
3
i,
80
—— ME
Aqretion Rate
124)
100
Be
40 ~-
1921 1922 1923
CHART 1 TrENDS oF ACCIDENT anp Propucrion Rates or 3 ComPaNIES Maxurac.
TURING AcCDs AND Heavy CrEMICALS. NUMBER oF EMPLOYEES 4,276
Acids and Heavy Chemicals. The combined experience of three
chemical companies, with 4,276 employees, shows 24-per-cent increase
in the rate of production from 1921 to 1923, accompanied by a 43-
Per-cent decrease in the accident frequency rate, and a 48-per-cent
decrease in the severity rate, (See Chart I.)