Successful use of wooden roof bolts in Stony Point Mines, Stony Point Coal Co., Hopkins County, Ky.
By: by L.W. Kelly.
Contributors: United States. Bureau of Mines.
Series: Information circular (United States. Bureau of Mines) -- 7637
Publisher: U.S. Dept. of the Interior, Bureau of Mines
Published: 1952
Place of publication: Washington, DC
Language: eng
Notes: 1