The story of Pittsburgh: Cement and concrete

Cement and concrete (Vol. 1, nr. 8)

Bibliographic data

Multivolume work

Identifikator:: 1831622599

Document type:: Multivolume work

Title:: The story of Pittsburgh

Place of publication:: Pittsburgh

Publisher:: First National Bank

Year of publication:: 1919-1930

Collection:: Economics Books

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Volume

Identifikator:: 1831623277

URN:: urn:nbn:de:zbw-retromon-239793

Document type:: Volume

Title:: Cement and concrete

Volume count:: Vol. 1, nr. 8

Place of publication:: Pittsburgh

Publisher:: First National Bank

Year of publication:: 1921

Scope:: [ca. 18] Seiten

Digitisation:: 2022

Collection:: Economics Books

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Chapter

Document type:: Multivolume work

Structure type:: Chapter

Title:: Castalia Portland Cement Company

Collection:: Economics Books

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.

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