On http://bigwalls.net there are now downloadable PDFs of my tools and technique research.
These two volumes cover the origins of mechanical protected rock climbing and are compiled from the research I have been posting on the bigwallgear.com site over the past two years.
There are also links to Blurb USA if you want to order a printed version. Enjoy!
Great, thanks. The PDF format is very convenient. This week I wanted to review the PDF files of those tools, but unfortunately, I couldn’t open them. I’m sure the issue was on my end, because after I used the DjVu to PDF converter at pdfguru.com/djvu-to-pdf and converted the manual to another format, it opened without any problems. Now I just need to fix one more issue with my PDF viewer.