Changes in technology and labor requirements in the crushed-stone industry
By: by Harry S. Kantor and Geoffrey A. Saeger.
Contributors: Saeger, Geoffrey A.; National Research Project on Reemployment Opportunities and Recent Changes in Industrial Techniques (U.S.); United States. Bureau of Mines.
Series: Mineral technology and output per man studies ;; report no. E-8
Publisher: Works Progress Administration, National Research Project in cooperation with Dept. of the Interior, Bureau of Mines
Published: 1939
Place of publication: Philadelphia, Pa
Language: eng
Number of pages: 169
Subjects: Stone, Crushed.; Quarries and quarrying -- United States.; Stone industry and trade -- United States.
Notes: Includes bibliographical references.
"February 1939."