Practical design methods for barrier pillars
By: by J.R. Koehler and Stephen C. Tadolini.
Contributors: Tadolini, Stephen C.
Series: Information circular -- 9427.; Information circular (United States. Bureau of Mines) -- 9427.
Publisher: U.S. Dept. of the Interior, Bureau of Mines
Published: 1995
Place of publication: [Washington, D.C.?]
Language: eng
Format: Microform
Number of pages: 19
Subjects: Pillaring (Mining) -- Design and construction; Longwall mining -- United States
Notes: Distributed to depository libraries in microfiche.

Shipping list no.: 96-0161-M.

Includes bibliographical references (p. 19).

Microfiche. [Washington, D.C.?] : Supt. of Docs., U.S. G.P.O., [1996] 1 microfiche : negative.