overcome the difficulty it has experienced in the past years 
in not being able to produce sufficient cement to meet the 
increased demand. 
The men in charge of the company’s affairs have had 
a long, practical experience. The President has been 
identified with the cement industry for more than forty 
years, in fact, ever since Portland cement was manufactured 
in this country. At that time, the raw material was 
ground, then mixed in a pug mill and made into bricks, 
yurned in vertical kilns, using coke as a fuel. Burr stones 
were used for grinding the clinker into a finished product. 
Horizontal revolving kilns are now used to burn the clinker 
and it is ground in large revolving tube mills with forged 
steel balls. 
On account of the increasing demand for cement, both 
in the construction of new roads and building, the company 
is now doing a verv prosperous business. 
PORTLAND CEMENT OUTPUT 
Production and shipments of Portland cement in the 
United States continued to increase during August, 1921, 
and according to available statistics scored new high records 
for that month. The August production exceeded the 
average for August, 1917-1921, by about 15 per cent. 
Production for the first eight months of 1921 was about 
99 per cent of the quantity produced during the correspond- 
ing period of 1920 and exceeded the average for the first 
sight months of 1917 to 1921 by about 8.5 per cent. 
As is usual in summer, the August shipments exceeded 
production, and the total for the eight months just ended 
was equivalent to more than 99 per cent of the record 
quantity shipped in the first eight months of 1920. The 
average for the same period during the five years 1917-1921 
was exceeded by about 9.5 per cent. 
Stocks of finished cement at mills at the end of August 
were approximately 38,120,000 sacks, compared with 
33,764,000 sacks on January 1, 1921, and with the average 
of about 38,400.000 sacks for August during the last five 
“TS.