Cover Image

Some information on timbering bituminous­coal mines.

Bibliographic Details
Corporate Author: United States. Bureau of Mines
Format: Government Document eBook
Language:English
Published: [Washington] : [s.n.], 1939.
Subjects:
Coal.
Mine accidents.
Lumber.
Online Access:Electronic resource (PDF)
Description
Item Description:Includes illustrations. Relayed in a series of questions and answers.
Physical Description:1 online resource (42 pages), digital, PDF file