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.
Amgueddfa Cymru – Museum Wales
13 pages, pinned togerther at top left hand corner. A brief review of high top pressure operation of the pig iron blast furnace.
Typed in black ink on cream paper.
