Potential safety hazard on J.H. Fletcher & Co. roof bolting machines with independent left and right tram levers [[electronic resource]]

• Pubblicazione: [Pittsburgh, Pa.] : , : [U.S. Dept. of Labor, Mine Safety and Health Administration, Pittsburgh Safety & Health Technology Center], , [2009]
• Descrizione fisica: 1 online resource (6 unnumbered pages) : color illustrations
• Soggetto topico: Mine roof bolting - Equipment and supplies; Mine roof bolting - Safety measures; Mine safety - United States
• Note generali: Title from title screen (viewed on Nov. 30, 2011).; "Issue date: 01/06/2009."
• Titolo autorizzato: Potential safety hazard on J.H. Fletcher & Co. roof bolting machines with independent left and right tram levers
• Formato: Materiale a stampa
• Livello bibliografico: Monografia
• Lingua di pubblicazione: Inglese
• Record Nr.: 9910700779603321
• Lo trovi qui: Univ. Federico II