Decline development at the Lakeshore property. Conference. 2F, 1T : Hendricks, RS Hecla Min. Co. Casagrande, Ariz. USA Proc. 1st N. Amer. Rapid Excav. Tunnelling Conf. Chicago, June 1972, AIME, V2, 1972, P897–913

• Publisher: Elsevier Science
• Year: 1975
• Tongue: English
• Weight: 92 KB
• Volume: 12
• Category: Article
• ISSN: 0148-9062
• DOI: 10.1016/0148-9062(75)91132-8