Keep out old mines are dangerous.

Bibliographic Details
Corporate Author:	United States. Office of Surface Mining Reclamation and Enforcement
Format:	Government Document Book
Language:	English
Published:	Washington, DC : U.S. Dept. of the Interior, Office of Surface Mining, [between 2000 and 2009?]
Subjects:	Abandoned mines > Risk assessment > United States. Mine safety > United States.
Online Access:	https://purl.fdlp.gov/GPO/LPS56643

Description
Item Description:	Title from title screen (viewed on Dec. 13, 2004). Electronic resource.
Format:	Mode of access: Internet from GPO Access web site. Address as of 12/13/04: http://permanent.access.gpo.gov/websites/osmregov/www.osmre.gov/pdf/keepout.pdf; current access is available via PURL.