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.)