ility of
moisture in the air pipes.

Fifth. Our cans are held in a solid frame of steel work and are
connected to the crane from the time the cans are pulled until they
are put back into the tanks, thereby doubling the life of the cans.

We give herewith data covering the cost of manufacturing ice and will
guarantee that under reasonably fair management the number of men
required will not be exceeded.

Do not fail to carefully analyze the following cost data. They may seem
extremely low but a thorough study of our system will prove them to be
very conservative.

[1]

NUMBER ONE

Manufacturing Costs Per Ton of Ice
Using Electric Power at Present Chicago
Rates for Power and Labor

Capacity of plant, 240 tons of ice per day, using 2692 cans of 400-lb.
capacity.

18000-ton storage house.

Average current requirement for freezing one ton of ice, including
storage cooling and all auxiliaries, 55 K. W. hours.

Average cost per K. W. hour, .9 cent.

Current cost per ton of ice, 55 x .9, equals 49.6 cents.

Assuming one month's shut-down for inspection and repairs, the total
output of 240 tons of ice for 333 days amounts to 79,920 tons, or
roughly speaking 80,000 tons of ice.

Adding 1/2 cent per ton of ice for the required heating, the total
power cost of making 80,000 tons of ice is (80,000 x .50)

$ 40,000.00

ENGINE ROOM LABOR COST:

1 chief engineer per day $ 10.00

3 engineers per day $ 8.00

Total per day $ 34.00

365 days at $34.00 equals $ 12,410.00

or 12410 / 80000 = 15.62 cents per ton

[2]

ICE PLANT LABOR COST:

3 men pulling ice and setting
it up in store-room. per day $ 6.00

3 men in store-room per day $ 6.00

1 shipping clerk per day $ 8.00

Total labor per day $ 44.00

365 days at $44.00 equals 16,060.00

For filling the winter
storage house and taking
the ice out of it will
require 3 additional men
for five months,
equals 150 days x $18.00, equals $ 2,700.00

Total Ice Plant Labor Cost Equals $18,760.00

or 18670 / 80000 = 23.46 cents per ton

240 tons of ice equal 1200---400-lb. cans. As 24 cans are pulled at
one time it requires 1200 / 24 = 50 pulls per day, or one pull every
29 minutes. The ice-puller has therefore ample tim