These cookies are absolutely essential for our website to function properly.
We use Google Analytics to measure how you use the website so we can improve it based on user needs.
These cookies may be set by third party websites and do things like measure how you view YouTube videos.
Title: "Twenty Months' Results of Dry Blast Operation" Pages 65-112 of a booklet (not arranged in order) attached with a paperclip. Black print on white paper, with 3 b&w photographs.
