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Graham Try the American Libraries online website. They have three separate scans of this book of which the Harvard University version is the clearest. Fig 60 appears reasonably clear. You can read online or download the PDF. http://www.archive.org/details/miningmethodsin01mayegoog Regards Phil Newman -----Original Message----- From: mining-history [mailto:[log in to unmask]] On Behalf Of Graham Isherwood Sent: 07 June 2010 17:10 To: [log in to unmask] Subject: Mining Methods in Europe - Mayer A contributor to Aditnow brought the book by Lucius W. Mayer, "Mining Methods in Europe," Hill Publishing CO. NY 1909 to my attention recently as there was a chapter in it (XIV) on the Oakeley Slate Quarry. Of particular interest to me is the illustration on page 80 (Fig 60) showing a water balance incline. Sadly the scan of the book (available in the Openlibrary) although good for the text and line drawings, is very poor when it comes to reproduction of the photographs. Is there anyone on the list who has a copy of the original book and can tell me whether the original illustration is any better ? Many thanks Graham Isherwood