Field test of an automated temporary roof support (ATRS) on a low-coal, single fixed-head roof-bolting machine (squirmer)
By: by Charles T. Chislaghi and Thomas E. Marshall
Contributors: Marshall, Thomas E; United States. Bureau of Mines
Series: Bureau of Mines technical progress report -- TPR 119
Publisher: U.S. Dept. of the Interior, Bureau of Mines
Published: 1982
Place of publication: Pgh. [i.e. Pittsburgh], Pa
Language: eng
Number of pages: 11
Subjects: Mine roof bolting; Coal-mining machinery
Notes: "Bureau of Mines Coal Mine Health and Safety Program."

"December 1982."

Includes bibliographical references